Motorola Mobility T56HQ1 Cellular/ PCS GSM Transceiver Module User Manual g20 Cell Engine Module Description

Motorola Mobility LLC Cellular/ PCS GSM Transceiver Module g20 Cell Engine Module Description

Exhibit 8 Users Manual

APPLICANT: MOTOROLA, INC. FCC ID: IHDT56HQ1 INSTRUCTION MANUAL • A preliminary draft copy of the User’s Manual follows this cover page. • The User’s Manual will have the following text added to it: "NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: . Reorient or relocate the receiving antenna. . Increase the separation between the equipment and receiver. . Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. . Consult the dealer or an experienced radio/TV technician for help." EXHIBIT 8
TechnicalInformationMOTOROLA G24 DEVELOPER’S GUIDEMODULE HARDWARE DESCRIPTION ENGLISHMAY 31, 20076889192V27-F
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICENoticeWhile reasonable efforts have been made to assure the accuracy of this document, Motorola, Inc. assumes no liability resulting from any inaccuracies or omissions in this document, or from use of the information obtained herein. The information in this document has been carefully checked and is believed to be entirely reliable. However, no responsibility is assumed for inaccuracies or omissions. Motorola, Inc. reserves the right to make changes to any products described herein and reserves the right to revise this document and to make changes from time to time in content hereof with no obligation to notify any person of revisions or changes. Motorola, Inc. does not assume any liability arising out of the application or use of any product, software, or circuit described herein; neither does it convey license under its patent rights or the rights of others.It is possible that this publication may contain references to, or information about Motorola products (machines and programs), programming, or services that are not announced in your country. Such references or information must not be construed to mean that Motorola intends to announce such Motorola products, programming, or services in your country.CopyrightsThis instruction manual, and the Motorola products described in this instruction manual may be, include or describe copyrighted Motorola material, such as computer programs stored in semiconductor memories or other media. Laws in the United States and other countries preserve for Motorola and its licensors certain exclusive rights for copyrighted material, including the exclusive right to copy, reproduce in any form, distribute and make derivative works of the copyrighted material. Accordingly, any copyrighted material of Motorola and its licensors contained herein or in the Motorola products described in this instruction manual may not be copied, reproduced, distributed, merged or modified in any manner without the express written permission of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent applications of Motorola, as arises by operation of law in the sale of a product.Computer Software CopyrightsThe Motorola and 3rd Party supplied Software (SW) products described in this instruction manual may include copyrighted Motorola and other 3rd Party supplied computer programs stored in semiconductor memories or other media. Laws in the United States and other countries preserve for Motorola and other 3rd Party supplied SW certain exclusive rights for copyrighted computer programs, including the exclusive right to copy or reproduce in any form the copyrighted computer program. Accordingly, any copyrighted Motorola or other 3rd Party supplied SW computer programs contained in the Motorola products described in this instruction manual may not be copied (reverse engineered) or reproduced in any manner without the express written permission of Motorola or the 3rd Party SW supplier. Furthermore, the purchase of Motorola products shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent applications of Motorola or other 3rd Party supplied SW, except for the normal non-exclusive, royalty free license to use that arises by operation of law in the sale of a product. VENDOR COPYRIGHTApache Software Foundation Copyright 2004-2005 All Rights Reserved
Usage and Disclosure RestrictionsLicense AgreementsThe software described in this document is the property of Motorola, Inc. and its licensors. It is furnished by express license agreement only and may be used only in accordance with the terms of such an agreement.Copyrighted MaterialsSoftware and documentation are copyrighted materials. Making unauthorized copies is prohibited by law. No part of the software or documentation may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, without prior written permission of Motorola, Inc.High Risk MaterialsComponents, units, or third-party products used in the product described herein are NOT fault-tolerant and are NOT designed, manufactured, or intended for use as on-line control equipment in the following hazardous environments requiring fail-safe controls: the operation of Nuclear Facilities, Aircraft Navigation or Aircraft Communication Systems, Air Traffic Control, Life Support, or Weapons Systems (High Risk Activities"). Motorola and its supplier(s) specifically disclaim any expressed or implied warranty of fitness for such High Risk Activities.Trademarks MOTOROLA and the Stylized M Logo are registered in the US Patent & Trademark Office. All other product or service names are the property of their respective owners. © Copyright 2007 Motorola, Inc. REV052604
May 31, 2007 Module Hardware Description iManual Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ixTarget Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ixManual Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ixApplicable Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ixRegulatory Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xRegulatory Statement (Safety). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xAntenna and Transmission Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xStandards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiContact Us . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiiText Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiiField Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiiiGeneral Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiiiCaring for the Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xivLimitation of Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvWarranty Notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvHow to Get Warranty Service? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xviClaiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xviConditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviiWhat is Not Covered by the Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviiInstalled Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviiiOut of Warranty Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviiiRevision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xixChapter 1: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Regulatory Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5CFR 47 Part 15.19 specifies label requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5CFR 47 Part 15.21 Information to user . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5CFR 47 Part 15.105 Information to the user . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Chapter 2: Hardware Interface Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Architecture Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Digital Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Analog Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8GSM Transceiver Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Power Supply Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Power On/Off Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Turning the G24 On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Power Supply Turn-on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Turning the G24 On Using ON_N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Turning the G24 On Using IGN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Table of Contents
Table of Contentsii Module Hardware Description May 31, 2007Turning the G24 Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Turning the G24 Off Using ON_N. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Turning the G24 Off Using IGN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Power Loss shut down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Turning the G24 Off Using AT+MRST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Low Power Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Activating Low Power Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Serial Interface During Low Power Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Terminating Low Power Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20Temporary Termination of Low Power Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Permanent termination of Low Power Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Real Time Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Serial Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Primary UART (UART1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Secondary UART (UART2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25USB Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25SIM Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26SIM Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26SIM Design Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Audio Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Handset Microphone Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Headset Microphone Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Speaker Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Headset Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Alert Loudspeaker Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Digital Audio Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34Voiceband Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Stereo Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Basic Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Advanced Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Audio Programming Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Audio Algorithms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Gain Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Audio Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40Analog Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41A/D Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Power Supply A/D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Temperature A/D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43General Purpose A/D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Controls and Indicators Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46VREF Reference Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46OFF Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Standby Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Active Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Wakeup Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48Antenna Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49GPRS/EGPRS Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49Transmission Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50General Purpose I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50Antenna Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Table of ContentsMay 31, 2007 Module Hardware Description iiiChapter 3: Electrical and Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54Application Interface Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54Chapter 4: Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61Board Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61Interface Connector Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62Mating Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63RF Connector Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64Mating Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64G24 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66Chapter 5: Service and Testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67Who to Contact? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67Required Query Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67Service Centers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69Testing a Standalone Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72Acronyms and AbbreviationsIndex
May 31, 2007 Module Hardware Description vFigure No. Figure Title Page No.2-1 G24 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72-2 Transmission Power Drops. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102-3 Power Supply Turn-on and Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152-4 ON_N Power On Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152-5 IGN Power On Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162-6 ON_N Power Off Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172-7 IGN Power Off Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172-8 ATS24 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192-9 CTS Signal During Sleep Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202-10 WKUPI_N Signal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212-11 Serial Interface Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222-12 UART1 Interface Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242-13 UART2 Interface Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252-14 USB Interface Signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252-15 G24 SIM Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262-16 Audio Interface Topology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282-17 Handset Microphone Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292-18 Headset Microphone Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302-19 Differential Speaker Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312-20 Single-ended Speaker Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312-21 Differential Loudspeaker Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332-22 SIngle-ended Loudspeaker Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332-23 Voiceband Mode PCM Bus Coding Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 362-24 Stereo Mode PCM Bus Coding Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 362-25 Audio Programming Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 382-26 Temperature A/D Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 432-27 VREF Power-up Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 472-28 WKUPO_N Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 492-29 TXEN_N Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504-1 G24 Mechanical Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 614-2 G24 Interface Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 624-3 Mating Connectors Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 634-4 MMCX Connector Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 644-5 Optional MMCX Cable Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 655-1 Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71List of Figures
May 31, 2007 Module Hardware Description viiTable No. Table Title Page No.1-1 Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-1 G24 Operating Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92-2 Power Supply Signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102-3 Recommended Power Supply Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112-4 G24 Current Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112-5 SIM Interface Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262-6 Handset Microphone Port Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292-7 Headset Microphone Port Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302-8 Speaker Port Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322-9 Alert Port Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342-10 Digital Audio modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352-11 Basic Mode Audio Paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 372-12 Advanced Mode Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 372-13 Speech Processing Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392-14 Gain Control Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392-15 Speaker Port Gains for Speech . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392-16 Microphone and Headset Microphone Port Gains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 402-17 A/D Signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 422-18 Supply A/D Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 432-19 Temperature Conversion Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 442-20 Temperature A/D Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 452-21 GPAD Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 452-22 Controls and Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 462-23 VREF Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 482-24 Antenna Interface Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 513-1 Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 533-2 Environmental Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 543-3 Interface Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 554-1 G24 interface connector options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 624-2 Interface Connector Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 624-3 RF Connector Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64List of Tables
May 31, 2007 Module Hardware Description ixPrefaceManual ScopeThis manual provides the electrical, mechanical and environmental requirements for properly integrating the G24 module in a host application.This manual gives a complete set of hardware features and functions that may be provided by G24. The availability of any feature or function, which is described in this manual, depends on the hardware revision and software version of a specific G24 model.The parameters and values provided in this manual are defined under typical conditions. These values may vary when subject to different conditions, such as SW version, network status, application settings and environmental conditions.Target AudienceThis manual is intended for all members of the integration team who are responsible for integrating the G24 module into the host OEM device, including representatives from hardware, software and RF engineering disciplines. Manual OrganizationThis manual contains the following chapters: •Chapter 1—introduces the G24 unit and provides important safety instructions.•Chapter 2—provides a detailed hardware description of the blocks and components comprising the G24.•Chapter 3—describes the pin assignments for G24 connectors.•Chapter 4—describes G24 mechanical specifications and requirements.•Chapter 5—provides contact information for Motorola Service Support and Customer Assistance.Applicable Documents•G24 Developer's Kit - 6889192V26•G24 AT Commands - 6889192V28
Regulatory Requirementsx Module Hardware Description May 31, 2007Regulatory RequirementsThe Federal Communications Commission (FCC) requires application for certification of digital devices in accordance with CFR Title 47, Part 2 and Part 15. This includes Electromagnetic Energy Exposure (EME) testing. As the G24 modem is not a standalone transceiver but is an integrated module, the G24 cannot be tested by itself for EME certification. It is, however, the integrator’s responsibility to have the completed device tested for EME certification.Regulatory Statement (Safety)The following safety precautions must be observed during all phases of the operation, usage, service or repair of any cellular terminal or mobile incorporating the G24 module. Manufacturers of the cellular terminal are advised to convey the following safety information to users and operating personnel, and to incorporate these guidelines into all manuals supplied with the product. Failure to comply with these precautions violates safety standards of design, manufacture and intended use of the product. Motorola assumes no liability for customer failure to comply with these precautions.•The G24 must be operated at the voltages described in the technical documentation•The G24 must not be mechanically nor electrically changed. Use of connectors should follow the guidance of the technical documentation•The G24 is designed to meet the EMC requirements of ETS 300342•When integrating the G24 into a system, Motorola recommends testing the system to ETS300342-1•The G24 meets the safety requirements of EN60950•Systems using the G24 are subject to mandatory EMC testing under directive 89/336/EEC (see item 3 above). Other directives, such as the LVD directive 73/23/EE, may also apply to a system using the G24 moduleAntenna and Transmission Safety PrecautionsUser OperationDo not operate your unit when a person is within 8 inches (20 centimeters) of the antenna. A person or object within 8 inches (20 centimeters) of the antenna could impair call quality and may cause the phone to operate at a higher power level than necessary.Important: The unit must be installed in a manner that provides a minimum separation distance of 20 cm or more between the antenna and persons and must not be co-located or operate in conjunction with any other antenna or transmitter to satisfy FCC RF exposure requirements for mobile transmitting devices.Important: To comply with the FCC RF exposure limits and satisfy the categorical exclusion requirements for mobile transmitters, the requirements described in the following section, “Antenna Installation” , must be met.
Preface May 31, 2007 Module Hardware Description xiAntenna Installation•The antenna installation must provide a minimum separation distance of 20 cm from users and nearby persons and must not be co-located or operating in conjunction with any other antenna or transmitter. •The combined cable loss and antenna gain must not exceed +6.8 dBi (850 band). The combined cable loss and antenna gain must not exceed +2.2 dBi and total system output must not exceed 2.0W EIRP in the PCS (1900) band in order to comply with the EIRP limit of 24.232 (b). OEM installers must be provided with antenna installation instruction and transmitter operating conditions for satisfying RF exposure compliance.StandardsElectromagnetic Compatibility: Principles and Applications by David A Weston, published by Marcel Dekker, Inc., 270 Madison Avenue, New York, NY 10016 USA. GSM 07.07 - prETS 300 916, Digital cellular telecommunication system (Phase 2+); AT command set for GSM Mobile Equipment (ME), Version 5.2.0 or higher, Reference RE/SMG-040707QR1.GSM 07.05, Digital cellular telecommunication system (Phase 2+); Use of Data Terminal Equipment - Data Circuit terminating; Equipment (DTE-DCE) interface for Short Message Service (SMS) and Cell Broadcast Service (CBS), Version 5.3.0, August, 1997, ReferenceTS/SMG-040705QR2.GSM 03.40, Digital cellular telecommunication system (Phase 2+); Technical realization of the Short Message Service (SMS) Point-to-Point (PP), Version 5.3.0, July 1996, Reference TS/SMG-040340QR2.GSM 04.11 Digital cellular telecommunication system (Phase 2+); Point-to-Point (PP) Short Message Service (SMS) support on mobile radio interface, Version 5.1.0, March 1996, Reference TS/SMG-030411QR.GSM 03.38, Digital cellular telecommunication system (Phase 2+); Alphabets and language-specific information, Version 5.3.0, July 1996, Reference TS/SMG-040338QR2.GSM 11.10-1, Digital cellular telecommunication system (Phase 2); Mobile Station (MS) Conformance specification; Part 1: Conformance specification. Draft pr ETS 300 607-1, March 1998, Reference RE/SMG-071110PR6-1.GSM Specifications are orderable from Global Engineering Documents, 15 Inverness Way East, Englewood, Colorado 80112-5704 USA 303-792-2181 800-624-3974.ETSI Standard PCS - 11.10-1.GSM 02.30 Supplementary services.GSM 03.90 USSD stage 2.GSM 11.14 SIM toolkit.ITU-T V.25terGSM Data Adapter for Motorola Handsets, AT command reference, Rev 2, June 9 1997. ETSI standard SMG31.GSM 05.02.ETSI 07.60.ETSI 0.7.07 Ver. 7.5.0.
Contact Usxii Module Hardware Description May 31, 2007Contact UsWe at Motorola want to make this guide as helpful as possible. Keep us informed of your comments and suggestions for improvements. For general contact, technical support, report documentation errors and to order manuals, use this email address: M2M.CustomerCare@motorola.comMotorola appreciates feedback from the users of our information.Text ConventionsThe following special paragraphs are used in this guide to point out information that must be read. This information may be set-off from the surrounding text, but is always preceded by a bold title in capital letters: NoteNote: Presents additional, helpful, noncritical information that you can use.WarningWarning: Presents information to warn you of a potentially hazardous situation in which there is a possibility of personal injury.Important Important: Presents information to help you avoid an undesirable situation or provides additional information to help you understand a topic or concept.Caution Caution: Presents information to identify a situation in which damage to software, stored data, or equipment could occur, thus avoiding the damage.
Preface May 31, 2007 Module Hardware Description xiiiField ServiceFor Field Service requests, use this email address:n2csfs01@motorola.comGeneral SafetyRemember!. . . safety depends on you!The following general safety precautions must be observed during all phases of operation, service, and repair of the equipment described in this manual. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the equipment. Motorola, Inc. assumes no liability for the customer’s failure to comply with these requirements. The safety precautions listed below represent warnings of certain dangers of which we are aware. You, as the user of this product, should follow these warnings and all other safety precautions necessary for the safe operation of the equipment in your operating environment.Ground the instrumentTo minimize shock hazard, the equipment chassis and enclosure must be connected to an electrical ground. If the equipment is supplied with a three-conductor AC power cable, the power cable must be either plugged into an approved three-contact electrical outlet or used with a three-contact to two-contact adapter. The three-contact to two-contact adapter must have the grounding wire (green) firmly connected to an electrical ground (safety ground) at the power outlet. The power jack and mating plug of the power cable must meet International Electrotechnical Commission (IEC) safety standards.Note: Refer to “Grounding Guideline for Cellular Radio Installations”–Motorola part no. 68P081150E62.Do not operate in an explosive atmosphereDo not operate the equipment in the presence of flammable gases or fumes. Operation of any electrical equipment in such an environment constitutes a definite safety hazard.Do not service or adjust aloneDo not attempt internal service or adjustment unless another person, capable of rendering first aid is present.Keep away from live circuitsOperating personnel must:•not remove equipment covers. Only Factory Authorized Service Personnel or other qualified maintenance personnel may remove equipment covers for internal subassembly, or component replacement, or any internal adjustment
Caring for the Environmentxiv Module Hardware Description May 31, 2007•not replace components with power cable connected. Under certain conditions, dangerous voltages may exist even with the power cable removed•always disconnect power and discharge circuits before touching themDo not substitute parts or modify equipmentBecause of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized modification of equipment. Contact Motorola Warranty and Repair for service and repair to ensure that safety features are maintained.Dangerous procedure warningsWarnings, such as the example below, precede potentially dangerous procedures throughout this manual. Instructions contained in the warnings must be followed. You should also employ all other safety precautions that you deem necessary for the operation of the equipment in your operating environment.Warning example:Warning: Dangerous voltages, capable of causing death, are present in this equipment. Use extreme caution when handling, testing, and adjusting.Caring for the EnvironmentThe following information is provided to enable regulatory compliance with the European Union (EU) Directive 2002/96/EC Waste Electrical and Electronic Equipment (WEEE) when using Motorola equipment in EU countries.Disposal of Motorola equipment in EU countriesPlease do not dispose of Motorola equipment in landfill sites.In the EU, Motorola in conjunction with a recycling partner will ensure that equipment is collected and recycled according to the requirements of EU environmental law.Please contact the Customer Network Resolution Center (CNRC) for assistance. The 24 hour telephone numbers are listed at http://mynetworksupport.motorola.comSelect Customer Network Resolution Center contact information.Alternatively if you do not have access to CNRC or the internet, contact the Local Motorola Office.
Preface May 31, 2007 Module Hardware Description xvDisposal of Motorola equipment in non-EU countriesIn non-EU countries, dispose of Motorola equipment in accordance with national and regional regulations.Limitation of LiabilityThe Products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body; in other applications intended to support or sustain life; for the planning, construction, maintenance, operation or use of any nuclear facility; for the flight, navigation, communication of aircraft or ground support equipment; or in any other application in which the failure of the Product could create a situation where personal injury or death may occur. If CUSTOMER should use any Product or provide any Product to a third party for any such use, CUSTOMER hereby agrees that MOTOROLA is not liable, in whole or in part, for any claims or damages arising from such use, and further agrees to indemnify and hold MOTOROLA harmless from any claim, loss, cost or damage arising from such use. EXCEPT AS SPECIFICALLY STATED ABOVE, THE PRODUCTS ARE PROVIDED "AS IS" AND MOTOROLA MAKES NO OTHER WARRANTIES EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE REGARDING THE PRODUCTS. MOTOROLA SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, OR ARISING FROM A COURSE OF DEALING OR USAGE OF TRADE.Under no circumstances shall MOTOROLA be liable to CUSTOMER or any other party for any costs, lost revenue or profits or for any other special, incidental or consequential damages, even if MOTOROLA has been informed of such potential loss or damage. And in no event shall MOTOROLA's liability to CUSTOMER for damages of any nature exceed the total purchase price CUSTOMER paid for the Product at issue in the dispute, except direct damages resulting from patent and/or copyright infringement, which shall be governed by the "INDEMNITY" Section of this Agreement. The preceding states MOTOROLA's entire liability for MOTOROLA's breach or failure to perform under any provision of this Agreement.Warranty NotificationMotorola guarantees to you, the original purchaser, the OEM module and accessories which you have purchased from an authorized Motorola dealer (the "Products"), to be in conformance with the applicable Motorola specifications current at the time of manufacture for a term of [1] year from date of purchase of the Product(s) (Warranty Term).You must inform Motorola of the lack of conformity to the applicable specifications of any of the Products within a period of two (2) months from the date on which you detect a defect in material, workmanship or lack of conformity and in any event within a term not to exceed the Warranty Term, and must immediately submit the Product for service to Motorola's Authorized Repair or Service Center. Motorola shall not be bound by Product related statements not directly made by Motorola nor any warranty obligations applicable to the seller.A list of the Motorola Call Center numbers is enclosed with this Product.During the Warranty term, Motorola will, at its discretion and without extra charge, as your exclusive remedy, repair or replace your Product which does not comply with this warranty; or failing this, to reimburse the price of the Product but reduced to take into account the use you
How to Get Warranty Service?xvi Module Hardware Description May 31, 2007have had of the Product since it was delivered. This warranty will expire at the end of the Warranty Term.This is the complete and exclusive warranty for a Motorola OEM module and accessories and in lieu of all other warranties, terms and conditions, whether express or implied.Where you purchase the product other than as a consumer, Motorola disclaims all other warranties, terms and conditions express or implied, such as fitness for purpose and satisfactory quality.In no event shall Motorola be liable for damages nor loss of data in excess of the purchase price nor for any incidental special or consequential damages* arising out of the use or inability to use the Product, to the full extent such may be disclaimed by law.This Warranty does not affect any statutory rights that you may have if you are a consumer, such as a warranty of satisfactory quality and fit for the purpose for which products of the same type are normally used under normal use and service, nor any rights against the seller of the Products arising from your purchase and sales contract.(*)including without limitation loss of use, loss of time, loss of data, inconvenience, commercial loss, lost profits or savings.How to Get Warranty Service?In most cases the authorized Motorola dealer which sold and/or installed your Motorola OEM module and original accessories will honor a warranty claim and/or provide warranty service. Alternatively, for further information on how to get warranty service please contact either the customer service department of your service provider or Motorola's service centers, listed in Chapter 5.ClaimingIn order to claim the warranty service you must return the OEM module and/or accessories in question to Motorola's Authorized Repair or Service Center in the original configuration and packaging as supplied by Motorola. Please avoid leaving any supplementary items like SIM cards. The Product should also be accompanied by a label with your name, address, and telephone number; name of operator and a description of the problem.In order to be eligible to receive warranty service, you must present your receipt of purchase or a comparable substitute proof of purchase bearing the date of purchase. The phone should also clearly display the original compatible electronic serial number (IMEI) and mechanic serial number [MSN]. Such information is contained with the Product.You must ensure that all and any repairs or servicing is handled at all times by a Motorola Authorized Service Center in accordance with the Motorola Service requirementsIn some cases, you may be requested to provide additional information concerning the maintenance of the Products by Motorola Authorized Service Centers only, therefore it is important to keep a record of any previous repairs, and make them available if questions arise concerning maintenance.
Preface May 31, 2007 Module Hardware Description xviiConditionsThis warranty will not apply if the type or serial numbers on the Product has been altered, deleted, duplicated, removed, or made illegible. Motorola reserves the right to refuse free-of-charge warranty service if the requested documentation can not be presented or if the information is incomplete, illegible or incompatible with the factory records.Repair, at Motorola's option, may include reflashing of software, the replacement of parts or boards with functionally equivalent, reconditioned or new parts or boards. Replaced parts, accessories, batteries, or boards are warranted for the balance of the original warranty time period. The Warranty Term will not be extended. All original accessories, batteries, parts, and OEM module equipment that have been replaced shall become the property of Motorola. Motorola does not warrant the installation, maintenance or service of the products, accessories, batteries or parts.Motorola will not be responsible in any way for problems or damage caused by any ancillary equipment not furnished by Motorola which is attached to or used in connection with the Products, or for operation of Motorola equipment with any ancillary equipment and all such equipment is expressly excluded from this warranty.When the Product is used in conjunction with ancillary or peripheral equipment not supplied by Motorola, Motorola does not warrant the operation of the Product/peripheral combination and Motorola will not honor any warranty claim where the Product is used in such a combination and it is determined by Motorola that there is no fault with the Product. Motorola specifically disclaims any responsibility for any damage, whether or not to Motorola equipment, caused in any way by the use of the OEM module, accessories, software applications and peripherals (specific examples include, but are not limited to: batteries, chargers, adapters, and power supplies) when such accessories, software applications and peripherals are not manufactured and supplied by Motorola.What is Not Covered by the WarrantyThis warranty is not valid if the defects are due to damage, misuse, tampering, neglect or lack of care and in case of alterations or repair carried out by unauthorized persons.The following are examples of defects or damage not covered by this product warranty1. Defects or damage resulting from use of the Product in other than its normal and customary manner.2. Defects or damage from misuse, access to incompatible sources, accident or neglect.3. Defects or damage from improper testing, operation, maintenance, installation, adjustment, unauthorized software applications or any alteration or modification of any kind.4. Breakage or damage to antennas unless caused directly by defects in material or workmanship.5. Products disassembled or repaired other than by Motorola in such a manner as to adversely affect performance or prevent adequate inspection and testing to verify any warranty claim.6. Defects or damage due to range, coverage, availability, grade of service, or operation of the cellular system by the cellular operator.7. Defects or damage due to moist, liquid or spills of food.8. Control unit coil cords in the Product that are stretched or have the modular tab broken.
Installed Dataxviii Module Hardware Description May 31, 20079. All plastic surfaces and all other externally exposed parts that are scratched or damaged due to customer normal use.Depending on operating conditions and your usage habits, wear and tear might take place of components including mechanical problems related to Product housing, paint, assembly, sub-assemblies, displays and keyboards and any accessories which are not part of the Product's in-box configuration. The rectification of faults generated through wear and tear and the use of consumable items like batteries beyond their Optimum Performance Time as indicated in the product manual is considered to be your responsibility and therefore Motorola will not provide the free Warranty repair service for these itemsInstalled DataPlease make and retain a note of all data you have inserted into your Product for example names, addresses, phone numbers, user and access codes, notes etc. before submitting your Product for a Warranty service as such data may be deleted or erased as part of the repair or service process.Please note if you have downloaded material onto your product, these may be deleted or erased as part of the repair process or testing process. Motorola shall not be responsible for such matters. The repair or testing process should not affect any such material that was installed by Motorola on your Product as a standard feature.Out of Warranty RepairsIf you request Motorola to repair your Product any time after the Warranty term or where this warranty does not apply due to the nature of the defect or fault, then Motorola may in its discretion carry out such repairs subject to you paying Motorola its fees for such a repair or it may refer you to an authorized third party to carry out such repairs.
Preface May 31, 2007 Module Hardware Description xixRevision HistoryManual Number6889192V27-FManual TitleModule Hardware Description Version InformationThe following table lists the manual version, date of version, and remarks about the version.Revision HistoryVersion Date Issue RemarksAJanuary 1, 2006 Initial ReleaseBApril 1, 2006 Minor updates to Preface and Chapter 2CJune 29, 2006 Removal of model numbers from the manual.Additional/updated regulatory issues.Reminder to EGPRS capabilities.DSeptember 1, 2006 Updates to Chapter 2 - Hardware Interface Description, in the following paragraphs: RTC Mode, Power Consump-tion, Turning the G24 On, Power Supply Turn-on, Low Power Mode, Data on the Serial Interface, A/D Interface, Controls and Indicators Interface.EJanuary 31, 2007 Minor updated to Product Specifications table and to Audio section in chapter 2.FMay 31, 2007 Minor changes to Chapter 5 Service and Testing.
May 31, 2007 Module Hardware Description 1Chapter 1: IntroductionThe G24 is the newest member of Motorola's embedded cellular modules family.Designed with quad band GSM capabilities, which supports all four GSM bands - 850/900/1800/1900 MHz, and with GPRS/EGPRS multislot class 10, G24 can operate on any GSM/GPRS/EGPRS network to provide voice and data communications. The G24 is similar to a condensed cellular phone core, which can be integrated into any system or product that needs to transfer voice or data information over a cellular network. Thus, it significantly enhances the system's capabilities, transforming it from a standalone, isolated product to a powerful high-performance system with global communications capabilities.The G24 is designed as a complete GSM communications solution with all the controls, interfaces and features to support a broad range of applications: •A powerful audio interface•A large set of indicators and control signals•Several advanced power-saving modes•A variety of serial communications solutions.All these features and interfaces are easily controlled and configured using a versatile AT command interface that provides full control over the G24 operation.The G24 control and indication interface extends its capabilities beyond GSM communications. This includes an A/D and GPIO interface, and a regulated output voltage for supplying external circuits. With these interfaces, the G24 can operate and control external applications and receive feedback from external environment and circuits.The G24 interface design, using a single 70 pin board-to-board connector, through which all application interfaces are managed, facilitates fast and easy integration. It significantly shortens the development process, and minimizes the product's time to market.The G24 is extremely compact in size with a slim mechanical design, which makes it space saving on the application board and easily fitted into any board design.The advanced power supply management significantly reduces power consumption to a necessary minimum and prolongs battery life.
Product Specifications2 Module Hardware Description May 31, 2007Product SpecificationsImportant: For safety regulations and requirements, see “Regulatory Requirements” on page x, “Regulatory Statement (Safety)” on page x and “Antenna and Transmission Safety Precautions” on page x in “Preface” .Note: Motorola reserves the right to change the specifications without prior notice.Table 1-1: Product SpecificationsProduct FeaturesOperating systems: GSM 850/GSM 900DCS 1800/PCS 1900Physical CharacteristicsSize (with 3 mm connector): 45.2 x 24.4 x 6.5 mmSize (with 2.5 mm connector): 45.2 x 24.4 x 6.0 mmMounting: Two Ø2.4 mm holesWeight: 10.1 grams
May 31, 2007 Module Hardware Description 3EnvironmentalOperational temperature: -20°C to +60°CStorage temperature: -40°C to +85°CPerformanceOperating voltage: 3.3 - 4.2 VCurrent consumption: 2.5 mA @ DRX9 (Sleep mode)Maximum Tx output power: GSM 850/GSM 900: Power class 4 (33 + 2 dBm)DCS 1800/PCS 1900: Power class 1 (30 + 2 dBm)InterfacesConnectors: Single 70-pin, board-to-boardRF MMCXSIM Card: External SIM connectivity3.0 VSerial Ports: UART:BR from 300 bps to 460800 bpsAuto BR from 300 bps to 57600 bpsUSB:USB full-speed device specifications, Rev. 2.0Data FeaturesGPRS: Multi-slot class 10 (4 Rx/2 Tx/5 Sum)Max Downlink BR 85.6 kbpsCoding scheme CS1-CS4Class B GSM 07.10 multiplexing protocolEGPRS (model depended) Multi-slot class 10Data rates of 270 kSpsCoding scheme CS5-CS9Class E-2CSD: Max BR 14.4 kbpsSMS: MO/MT Text and PDU modesCell broadcastFAX Class 1Voice FeaturesTelephonyDigital audioDifferential analog audio linesVocoders EFR/HR/FR/AMRDTMF supportAudio control: Echo suppression, noise suppression, side tone and gain controlTable 1-1: Product Specifications (Cont.)
Product Specifications4 Module Hardware Description May 31, 2007GSM Supplementary ServiceUSSD Phase IICall forwardingCall hold, waiting and multipartyCall divertingMissed-call indicatorAOCCall barringCharacter SetUTF8UCS2ASCIIGSM8859-1Control/Status IndicatorsGSM/GPRS/EGPRS coverageWakeupTX enableResetAntenna DetectFeatures over RS232Embedded TCP/IP stackAT Command SetGSM 07.05GSM 07.07Motorola proprietary AT commandsAccessoriesFirmware data loaderData loggerDeveloper KitTable 1-1: Product Specifications (Cont.)
May 31, 2007 Module Hardware Description 5Regulatory ApprovalsThe G24 module has been tested and approved under the standards and regulations listed below:•FCC•DOC•R&TTE•PTCRB•IC•CTIA•FTA•EMCImportant: The following paragraphs must be addressed by the integrator to ensure their host is in compliance to the G24 FCC grant and/or the FCC grant of the host device.CFR 47 Part 15.19 specifies label requirementsThe following text may be on the product, user's manual, or container.This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.CFR 47 Part 15.21 Information to userThe user's manual or instruction manual for an intentional or unintentional radiator shall caution the user that changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. In cases where the manual is provided only in a form other than paper, such as on a computer disk or over the Internet, the information required by this section may be included in the manual in that alternative form, provided the user can reasonably be expected to have the capability to access information in that form.CFR 47 Part 15.105 Information to the user(b) For a Class B digital device or peripheral, the instructions furnished the user shall include the following or similar statement, placed in a prominent location in the text of the manual:Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following
Regulatory Approvals6 Module Hardware Description May 31, 2007measures:- Reorient or relocate the receiving antenna.- Increase the separation between the equipment and receiver.- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.- Consult the dealer or an experienced radio/TV technician for help.
May 31, 2007 Module Hardware Description 7Chapter 2: Hardware Interface DescriptionThe following paragraphs describe in details the hardware requirements for properly interfacing and operating the G24 module.Architecture OverviewFigure 2-1 below illustrates the primary functional components of the G24.Figure 2-1: G24 Block Diagram
Architecture Overview8 Module Hardware Description May 31, 2007The G24 consists of the following blocks:Digital Block•Micro-controller Unit (MCU) for system and user code execution.•Digital Signal Processor (DSP) for voice and data processing.•Serial communications interfaces.•USB driver interface•UART1•UART2•SPI - logger•SIM card•Digital audio (PCM) bus interface.•General purpose IO signals.Analog Block•Power Management IC (PMIC).•Internal regulators•1 external regulator for customer use•Analog audio interface management.•Speaker, microphone•Alert speaker•Headset•General purpose and dedicated A/D signals.•A/D•Voltage sensor•Temperature sensor•Real Time Clock (RTC) subsystem.GSM Transceiver Block•RF power amplifier.•3 gain stages for the low GSM band and high GSM band•850/900/1800/1900 MHz•RF receiver, which includes LNAs, Mixers, VCOs, I/Q outputs and buffers.•Signal processing IC for transmit and receive GSM data processing.•FEM - Front End Module.•Includes a harmonic filter and antenna switch•Filter - Quad-band SAW filter that selects the required receive band.
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 9Operating ModesG24 incorporates several operating modes. Each operating mode is different in the active features and interfaces.Table 2-1 summarizes the general characteristics of the G24 operating modes and provides general guidelines for operation.Table 2-1: G24 Operating Modes Mode Description FeaturesNot Powered VCC supply is disconnected. The G24 is Off.Any signals connected to the interface con-nector must be set low or tri-state.RTC Mode Valid VCC supply.RESET_N signal is enabled (low).The G24 Interfaces are Off. Only the internal RTC timer is operating. Any signalsconnected to the interface connector must be set low or tri-stated.Idle Mode RESET_N signal is disabled (high).CTS_N and DSR_N signals are enabled (low).The G24 is fully active, registered to the GSM network and ready to communicate.This is the default power-up mode.Sleep Mode RESET_N signal is high.CTS_N signal is disabled.The G24 is in low power mode.The application interfaces are disabled, but, G24 continues to monitor the GSM network.CSD call or GPRS/EGPRS dataRESET_N signal is high.TXEN_N signal is toggling.A GSM voice or data call is in progress.When the call terminates, G24 returns to the last operating state (Idle or Sleep).
Power Supply10 Module Hardware Description May 31, 2007Power SupplyThe G24 power supply must be a single external DC voltage source of 3.3V to 4.2V. The power supply must be able to sustain the voltage level during a GSM transmit burst current surge, which may reach 2.0A.The G24 interface connector has 8 contacts for the main power supply, as described in Table 2-2. All these contacts must be used for proper operation.Power Supply DesignSpecial care must be taken when designing the power supply of the G24. The single external DC power source indirectly supplies all the digital and analog interfaces, but also directly supplies the RF power amplifier (PA). Therefore, any degradation in the power supply performance, due to losses, noises or transients, will directly affect the G24 performance.The burst-mode operation of the GSM transmission and reception, draws instantaneous current surges from the power supply, which causes temporary voltage drops of the power supply level. The transmission bursts consume the most instantaneous current, and therefore cause the largest voltage drop. If the voltage drops are not minimized, the frequent voltage fluctuations may degrade the G24 performance.Figure 2-2 illustrates the power supply behavior during GSM transmission.Figure 2-2: Transmission Power DropsTable 2-2: Power Supply SignalsPin # Signal Name Description1-4 GND Main ground connection for G24 module.5-8 VCC DC supply input for G24 module.VIN = 3.3 V to 4.2 VIRMS = 550 mA during multislot transmissionIMAX = 2 A during transmit bursts
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 11It is recommended that the voltage drops during a transmit burst will not exceed 300mV, measured on the G24 interface connector. In any case, the G24 supply input must not drop below the minimum operating level during a transmit burst. Dropping below the minimum operating level may result in a low voltage detection, which will initiate an automatic power-off.To minimize the losses and transients on the power supply lines, it is recommended to follow these guidelines:•Use a 1000 uF, or greater, low ESR capacitor on the G24 supply inputs. The capacitor should be located as near to the G24 interface connector as possible.•Use low impedance power source, cabling and board routing.•Use cabling and routing as short as possible.•Filter the G24 supply lines using filtering capacitors, as described in Table 2-3.Power ConsumptionTable 2-4 specifies typical G24 current consumption ratings in various operating modes. The current ratings refer to the overall G24 current consumption over the VCC supply.Table 2-3: Recommended Power Supply FilteringCapacitor Usage Description1000 uF GSM Transmit current sergeMinimizes power supply losses during transmit bursts.Use maximum possible value.10 nF, 100 nF Digital switching noise Filters digital logic noises from clocks and data sources.8.2 pF, 10 pF 1800/1900 MHz GSM bands Filters transmission EMI.33 pF, 39 pF 850/900 MHz GSM bands Filters transmission EMI.Table 2-4: G24 Current Ratings Parameter Description Conditions Min Typ Max UnitIOFF RTC mode 75 85 µAIIDLE Idle mode 18 mAISLEEP Low power mode DRx 2593.252.702.45mA
Power Supply12 Module Hardware Description May 31, 2007IGSM-RMSAverage currentGSM voice -1 TX slot1 Rx slotGSM850 PCL 5101519305165120110mAEGSM900 PCL 5101519305165120110DCS1800 PCL 051015225150115107PCS1900 PCL 051015225150115107IGPRS-RMSAverage currentGPRS Class 10 -2 TX slot3 Rx slotGSM850 PCL 5101519540275170145mAEGSM900 PCL 5101519540275170145DCS1800 PCL 051015345200150140PCS1900 PCL 051015345200150140IEGPRS-RMS Average currentEGPRS Class 10 -2 TX slot3 Rx slotGSM850 PCL 81419339185144mAEGSM900 PCL 81419328185148DCS1800 PCL 2915260167151PCS1900 PCL 2915260169151Table 2-4: G24 Current Ratings (Cont.)Parameter Description Conditions Min Typ Max Unit
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 13IGSM-MAX Peak currentDuring TX slotGSM850 PCL 51015192000850430330mAGSM900 PCL 51015192000850430330GSM1800 PCL 0510151350615380330GSM1900 PCL 0510151350615380330IEGPRS-MAX Peak currentEGPRS Class 10-2 TX slot3 RX slotGSM850 PCL 814191780635353mAGSM900 PCL 814191680635353GSM1800 PCL 29151200489367GSM1900 PCL 29151200489367Table 2-4: G24 Current Ratings (Cont.)Parameter Description Conditions Min Typ Max Unit
Power On/Off Operation14 Module Hardware Description May 31, 2007Power On/Off OperationThe G24 power on and off process includes two primary phases, which are indicated at the interface connector by the hardware output signals RESET_N and CTS_N.The RESET_N signal indicates whether G24 is powered on or off.When this signal is enabled (low), G24 is powered-off. When it is disabled (high), G24 is powered-on.The CTS_N signal indicates the serial communications interface (UART) status. When this signal is high, the G24 serial interface is disabled. When it is low, the serial interface is enabled, and G24 is ready to communicate.These same conditions apply to the CTS2_N signal with regards to the second serial interface (UART2).Important: Do not operate the G24 out of its electrical or environmental limits. Refer to the specifications chapter for details of these limits.Turning the G24 OnWhen the G24 power supply is stable above the minimum operating level and G24 is powered off, only the internal RTC timer is active.When G24 is turned on, by any of the methods described below, it will first perform an automatic internal system-test, during which basic functions are verified. The system-test duration is typically 1600 milliseconds. When the system-test has completed G24 resumes normal operation.During the internal system-test process G24 may toggle several interface signals, which are visible to the application. These signals do not represent any valid state or data, and should be ignored by the customer application until the system-test has completed.Power Supply Turn-onWhen connecting the power supply for the first time, or when reconnecting it after a power supply loss, G24 will power-on. The G24 is turned-on automatically when external power is applied above the minimum operating level.The G24 will power-off automatically, in case it is not powered-on by the ON_N or IGN signals, after the internal system-test period (typically 1600ms) is completed.If the ON_N or IGN signals are asserted during that period, G24 will respond accordingly and continue to power-up normally.The ON_N and IGN signals will be active and responding only after the power supply to the G24 is stable above the minimum operating level. Therefore, the ON_N and IGN signals must not be used for at least 100 milliseconds after applying power to G24.
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 15Figure 2-3 illustrates the G24 power on and off upon application of a power supply, during which the ON_N or IGN signals are not asserted.Figure 2-3: Power Supply Turn-on and OffTurning the G24 On Using ON_NThe ON_N input signal is set high by an internal pull-up resistor whenever a power supply is applied to G24. Therefore, it is recommended to operate this signal using an open collector/drain circuit connection.Asserting the ON_N signal low for a minimum of 500 milliseconds (0.5 seconds) and a maximum of 1.5 seconds will cause the G24 to turn-on.Asserting the ON_N signal low for more than 1.5 seconds may cause the G24 to interpret the signal as a power-off command, and turn off immediately after turning on.Figure 2-4 illustrates the power-on process using the ON_N signal.Figure 2-4: ON_N Power On Timing
Power On/Off Operation16 Module Hardware Description May 31, 2007Turning the G24 On Using IGNThe IGN input signal must be set low when not used. To turn on G24, this signal must be asserted high. The IGN signal must remain high for the duration of the G24 operation. G24 powers down when the IGN signal is returned to its low state.Important: It is recommended to place a pull-down resistor in the customer application, on the IGN signal. A 100 kohm resistor, or less, is acceptable.Figure 2-5 illustrates the power-on process using the IGN signal.Figure 2-5: IGN Power On TimingTurning the G24 OffThere are several ways to turn the G24 off:•Asserting the ON_N signal low for a minimum of 2 seconds.•Setting the IGN signal low.•Low power automatic shut down.•AT command.Turning the G24 Off Using ON_NThe ON_N signal is set high using an internal pull up resistor when power is applied to G24. Asserting the ON_N signal low for a minimum of 2 seconds will turn G24 off. This will initiate a normal power-off process, which includes disabling of all applications interfaces (UART, SIM card, audio, etc.) and closing the network connection.
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 17Figure 2-6 illustrates the power-off timings when using the ON_N signal.Figure 2-6: ON_N Power Off TimingTurning the G24 Off Using IGNThe IGN signal may be used to power off G24 only if it was also used to power it on. When the IGN signal is set low, G24 will turn off. This will initiate a normal power-off process, which includes disabling of all applications interfaces (UART, SIM card, audio, etc.) and closing the network connection.The IGN signal will not power off G24 before 30 seconds have elapsed since G24 was powered-on. This delay mechanism is implemented to protect G24 from unexpected transients on the IGN line during power up, particularly when applying vehicle cranking waveforms.Figure 2-7 illustrates the power-off timings when using the IGN signal.Figure 2-7: IGN Power Off Timing
Power On/Off Operation18 Module Hardware Description May 31, 2007Power Loss shut downA low power shut down occurs when G24 senses the external power supply is below the minimal operating limit. The module will respond by powering down automatically without notice.This form of power-down is not recommended for regular use since the unexpected power loss may result in loss of data.Turning the G24 Off Using AT+MRSTThe AT+MRST command initiates a G24 system reset operation, which powers off the G24. This command emulates the ON_N signal operation for power off.
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 19Low Power ModeThe G24 incorporates an optional low power mode, called Sleep Mode, in which it operates in minimum functionality, and therefore draws significantly less current. During low power mode the G24 network connection is not lost. G24 continues to monitor the GSM network constantly for any incoming calls or data.During low power mode, all of the G24 interface signals are inactive and are kept in their previous state, prior to activating low power mode. To save power, all the G24 internal clocks and circuits are shut down, and therefore serial communications is limited.Activating Low Power ModeBy default, the G24 powers on in Idle mode. In this mode the G24 interfaces and features are functional and the module is fully active.Low power mode is activated by the ATS24 command. The value set by this command determines the inactive state duration required by G24, in seconds, after which G24 will enter sleep mode.For example:ATS24 = 1 activates low power mode after 1 second of inactivity.ATS24 = 5 activates low power mode after 5 seconds of inactivity.ATS24 = 0 disables low power mode (default).Figure 2-8 illustrates the ATS24 command operation.Figure 2-8: ATS24 OperationImportant: G24 will not enter low power mode in any case when there is data present on the serial interface or incoming from the GSM network or an internal system task is running. Only when processing of any external or internal system task has completed, and G24 is inactive for the duration of ATS24, it will enter low power mode.
Low Power Mode20 Module Hardware Description May 31, 2007Important: G24 will not enter low power mode when USB is operating. Connecting USB to the G24 will disable the low power mode operation.Serial Interface During Low Power ModeDuring low power mode the G24 serial interfaces are disabled. This is indicated by the CTS signal high state.The G24 wakes up periodically from low power mode to page the GSM network for any incoming calls or data. After this short paging is completed, G24 returns to low power mode. During this short awake period, the serial interfaces are enabled and communications with the module is possible.The CTS_N signal is alternately enabled and disabled synchronously with the network paging cycle. CTS_N is enabled whenever G24 awakes to page the network. This indicates the G24 serial interfaces are active (see Figure 2-9).Figure 2-9: CTS Signal During Sleep ModeThe periodical enabling and disabling of the CTS_N signal during low power mode can be controlled by the AT+MSCTS command.Setting AT+MSCTS=1 permanently disables the serial interface during low power mode, even during a network page by G24. The CTS_N signal is disabled, and therefore the serial interfaces are blocked.Terminating Low Power ModeTerminating the low power mode, or wake-up, is defined as the transition of the G24 operating state from Sleep mode to Idle mode. There are several ways to wake-up G24 from low power mode as described below.Important: During power saving mode the G24 internal clocks and circuits are disabled, in order to minimize power consumption. When terminating the power saving mode, and switching to Idle mode, G24 requires a minimal delay time to reactivate and stabilize its internal circuits before it can respond to application data.This delay is typically of 5 milliseconds, and is also indicated by the CTS_N signal inactive (high) state. The delay guarantees that data on the serial interface is not lost or misinterpreted.
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 21Temporary Termination of Low Power ModeTemporary termination of low power mode occurs when G24 switches from Sleep mode to Idle mode for a defined period, and then returns automatically to Sleep mode.Low power mode may be terminated temporarily by several sources, some of which are user initiated and others are initiated by the system.Using the WKUPI_N signalThe WKUPI_N signal is an active low input, that is set high by default. By asserting this signal low the application can wake-up G24 from low power mode and switch to Idle mode.G24 will remain in Idle mode, awake and fully active, as long as WKUPI_N signal remains low. When this signal is disabled and set high again, G24 will return to Sleep mode automatically, according to the ATS24 settings (see Figure 2-10).Figure 2-10: WKUPI_N Signal OperationThe WKUPI_N signal is the recommended method to temporarily wake-up G24 from low power mode. It provides the application full control of the G24 operating mode and guarantees that data on the serial interface will not be lost or misinterpreted.The WKUPI_N signal must be used to wake up G24 from low power mode if the serial interface has been disabled by the AT+MSCTS command.Incoming Network DataDuring low power mode, G24 continues monitoring the GSM network for any incoming data, message or voice calls.When G24 receives an indication from the network that an incoming voice call, message or data is available, it automatically wakes up from low power mode to alert the application. When G24 has completed to process all the tasks related to the incoming data, it will automatically return to low power mode according to the ATS24 settings.Depending on the type of network indication and the application settings, G24 may operate in several methods, which are configurable by AT commands, to alert the application of the incoming data:•Enable the WKUPO_N signal to wake-up the application from low power.•Send data to the application over the serial interface.•Enable the serial interface's Ring Indicator (RI_N) signal.
Low Power Mode22 Module Hardware Description May 31, 2007Data on the Serial interfaceWhile G24 is temporarily awake in Idle mode, data may be transmitted on the serial interface. In case data is being transmitted in any direction, G24 will not return to low power mode. This is regardless of the original wake-up reason or source. G24 will remain awake while data is transferred.Only when the serial interface transfer is completed and the data has been processed, G24 will return to low power mode automatically, according to the ATS24 settings (see Figure 2-11).Figure 2-11: Serial Interface DataPermanent termination of Low Power ModeThe G24 low power mode is enabled and disabled by the ATS24 command.To permanently terminate the G24 low power mode, the ATS24 = 0 command must be used. Setting ATS24 = 0 disables the currently active low power mode and switches G24 to Idle mode.G24 will not return to low power mode until an ATS24 > 0 commands is set again.This command can be sent only when the serial interface is active.In case the serial interface is disabled, it must first be activated before sending this command. To reactivate the serial interface, a temporary termination of the low power mode is required, as described in “Temporary Termination of Low Power Mode” on page 21.Following the temporary low power mode termination, the serial interface will activate and the ATS24 = 0 command can be received by G24.
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 23Real Time ClockG24 incorporates a Real Time Clock (RTC) mechanism that performs many internal functions, one of which is keeping time. The RTC subsystem is embedded in the PMIC and operates in all of the G24 operating modes (Off, Idle, Sleep), as long as power is supplied above the minimum operating level.The G24 time and date can be set using the following methods:•Automatically retrieved from the GSM network.In case G24 is operated in a GSM network that supports automatic time zone updating, it will update the RTC with the local time and date upon connection to the network. The RTC will continue to keep the time from that point.•Using the AT+CCLK command.Setting the time and date manually by this AT commands overrides the automatic network update.Once the time and date are manually updated, the RTC timer will keep the time and date synchronized regardless of the G24 operating state.When the power supply is disconnected from G24, the RTC timer will reset and the current time and date will be lost. On the next G24 power-up the time and date will need to be set again automatically or manually.
Serial Interfaces24 Module Hardware Description May 31, 2007Serial InterfacesG24 includes three completely independent serial communications interfaces, which may be used by the application for several purposes.Primary UART (UART1)The G24 primary UART is a standard 8-signal bus. The primary UART is used for all the communications with G24 - AT commands interface, GPRS/EGPRS data and CSD data, programming and software upgrades.The UART signals are active low CMOS level signals. For standard RS232 communications with a PC, an external transceiver is required.G24 is defined as a DCE device, and the user application is defined as the DTE device. These definitions apply for the UART signals naming conventions, and the direction of data flow, as described in Figure 2-12.Figure 2-12: UART1 Interface SignalsThe G24 primary UART supports baud rates 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400 and 460800 bps.Auto baud rate detection is supported for baud rates up to 57600 bps.All flow control handshakes are supported: hardware, software, or none.Parity bit and Stop bit definitions are also supported.The UART default port configuration is 8 data bits, 1 stop bit and no parity, with hardware flow control and auto baud rate detect enabled.Important: The G24 UART will not send data over the serial interface in case the DTR_N and/or RTS_N input signals are disabled (set high). Therefore, regardless of the handshake method, it is still required to enable these signals for proper operation, by asserting them low.
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 25Secondary UART (UART2)The secondary UART is a 4-signal interface, which only provides data and flow control signals. The secondary UART is designed, but not limited, to enhance the G24 capabilities by providing connectivity to external devices or applications that require serial communications, such as GPS receivers or Bluetooth wireless devices.The secondary UART may also be used for standard serial communications, like the primary UART.The UART signals are active low CMOS level signals. For standard RS232 communications with a PC, an external transceiver is required.G24 is defined as a DCE device, and the user application is defined as the DTE device. These definitions apply for the UART signals naming conventions, and the direction of data flow, as described in Figure 2-13.Figure 2-13: UART2 Interface SignalsUSB InterfaceG24 incorporates a standard Universal Serial Bus (USB) interface.The G24 USB electrical interface and protocol conform to the USB 2.0 full-speed specifications. G24 is defined as a USB device on the USB bus and does not support hub or host functionality.USB may be used for standard communications with G24, as done through the UART interface.Important: When USB is active, G24's low power mode cannot be operated.The USB interface signals are shown in Figure 2-14.Figure 2-14: USB Interface Signals
SIM Interface26 Module Hardware Description May 31, 2007SIM InterfaceThe G24 incorporates a SIM interface, which conforms to the GSM 11.11 and GSM 11.12 standards, that are based on the ISO/IEC 7816 standard. These standards define the electrical, signaling and protocol specifications of a GSM SIM card.G24 does not incorporate an on-board SIM card tray for SIM placement. The SIM must be located on the user application board, external to the G24. The G24 SIM interface includes all the necessary signals, which are routed to the interface connector, for a direct and complete connection to an external SIM.G24 supports dynamic detection of the SIM card, through a dedicated SIM detection signal. G24 will detect a SIM card insertion or removal upon power up or during operation by the transitions on the SIM_PD_N signal.SIM ConnectionFigure 2-15 illustrates a typical SIM interface connection to G24. This connection type is implemented on the G24 Developer Board, using an FCI SIM tray, PN 7111S1615A05.Figure 2-15: G24 SIM InterfaceTable 2-5 details the SIM interface signals.Table 2-5: SIM Interface SignalsPin # Signal Name Description48 SIM_VCC 2.85V Supply to the SIM44 SIM_RST_N Active low SIM reset signal52 SIM_DIO Serial input and output data
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 27SIM Design GuidelinesThe SIM interface and signals design is extremely important for proper operation of G24 and the SIM card. There are several design guidelines that must be followed to achieve a robust and stable design that meets the required standards and regulations.•Using the SIM detection signal, SIM_PD_N, is mandatory in case the SIM card is accessible to the user and may be removed during G24 operation. To avoid any damage to the SIM or G24, the SIM interface signals must be deactivated before the SIM card contacts are mechanically removed from the SIM tray contacts. Therefore, the SIM_PD_N detection signal must be disabled before the SIM is removed from its tray.•The SIM should be located, and its signals should be routed, away from any possible EMI sources, such as the RF antenna and digital switching signals.•The SIM interface signals length should not exceed 100 mm between the G24 interface connector and the SIM tray. This is to meet with EMC regulations and improve signal integrity.•To avoid crosstalk between the SIM clock and data signals (SIM_CLK and SIM_DIO), it is recommended to rout them separately on the application board, and preferably isolated by a surrounding ground plane.•The SIM card signals should be protected from ESD using very low capacitance protective elements (zener diodes, etc.).•The G24 interface does not support SIM programming through the VPP signal. This signal should not be connected to G24.46 SIM_CLK Serial 3.25 MHz clock50 SIM_PD_N Active low SIM card presence detectionTable 2-5: SIM Interface Signals (Cont.)Pin # Signal Name Description
Audio Interface28 Module Hardware Description May 31, 2007Audio InterfaceThe G24 audio interface supports several audio devices and operating modes.The audio interface's operating modes, active devices, amplification levels and speech processing algorithms are fully controlled by the host application, through advanced programming options and a versatile AT commands set.The G24 supports the following audio devices:•Two single-ended and biased mono analog microphone inputs for use in a variety of modes.•Two differential mono analog speaker outputs for use in a variety of modes.•A digital serial interface using PCM coding.Figure 2-16 shows the audio interface topology.Figure 2-16: Audio Interface TopologyHandset Microphone PortThe handset microphone port is the G24 power-up default active audio input for voice calls. It is located on pin 61 at the G24 interface connector, named MIC.It is designed as a single-ended input and should be referenced to the G24 analog ground.The microphone input includes all the necessary circuitry to support a direct connection to an external microphone device. It incorporates an internal bias voltage of 2.1V through a 2.2kΩ resistor, and has an impedance of 1kΩ.
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 29Figure 2-17 shows the microphone circuit and Table 2-6 gives the microphone specifications.Figure 2-17: Handset Microphone CircuitImportant: The microphone circuit design depends on the type of microphone device. A series capacitor is required in case a passive microphone is used, or the application provides a separate bias voltage to an active microphone circuit.The internal G24 biasing circuit may also be used with an active microphone, which corresponds to the microphone port specifications.Headset Microphone PortThe headset microphone port is designed for use with, but not limited to, a headset audio device. It is located at pin 57 on the G24 interface connector, named HDST_MIC.It is designed as a single-ended input and should be referenced to the G24 analog ground.The microphone input includes all the necessary circuitry to support a direct connection to a headset microphone device. It incorporates an internal bias voltage of 2.1V through a 2.2kÙ resistor, and has an impedance of 1kΩ.Table 2-6: Handset Microphone Port SpecificationsParameter Conditions Min Typ Max UnitInput Voltage No loadAT+MMICG=02.0 VPPGain Programmable in 1 dB steps031dBAC Input Impedance1kΩBias voltage RBIAS = 2.2 kΩIBIAS = 1 mA22.12.2VBias Current 1 mA
Audio Interface30 Module Hardware Description May 31, 2007Figure 2-18 shows the microphone circuit and Table 2-7 gives the microphone specifications.Figure 2-18: Headset Microphone CircuitImportant: The headset microphone circuit design depends on the type of microphone device.A series capacitor is required in case a passive microphone is used, or the application provides a separate bias voltage to an active microphone circuit.The internal G24 biasing circuit may also be used with an active microphone, which corresponds to the headset microphone port specifications.Speaker PortThe analog speaker port is the G24 power-up default active output for voice calls and DTMF tones. It is located at pins 67 and 69 on the G24 interface connector, named SPKR_N and SPKR_P respectively.Table 2-7: Headset Microphone Port SpecificationsParameter Conditions Min Typ Max UnitInput Voltage No loadAT+MMICG=02.0 VPPGain Programmable in 1 dB steps031dBAC Input Impedance1kΩBias voltage RBIAS = 2.2 kΩIBIAS = 1 mA22.12.2VBias Current 1 mAExt Mic AC Input Impedance@1.02 kHz 28 kΩ
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 31It is designed as a differential output with 32Ω impedance, but may also be used as a single-ended output referenced to the G24 analog ground.The speaker output is used for both the handset and the headset audio paths.Figure 2-19 shows a differential speaker circuit, Figure 2-20 shows a single-ended speaker circuit and Table 2-8 gives the speaker specifications.Figure 2-19: Differential Speaker CircuitImportant: For safety regulations it is important to place series resistors on the speaker output lines, as illustrated in Figure 2-19. The resistors value should be R = 0Ω at the design stage, but may be changed to a different value during audio safety testing, in case speaker level limitation is required.Figure 2-20: Single-ended Speaker Circuit
Audio Interface32 Module Hardware Description May 31, 2007Important: When implementing a single ended speaker design, it is required to place a series capacitor and resistor on the speaker output line, as illustrated in Figure 2-20.The capacitor should be of low tolerance with values of C = 10-22 uF.The resistor value depends on the speaker application:- For a handset device, the resistor value should be R = 0Ω at the design stage, but may be changed to a different value during audio safety testing, in case speaker level limitation is required.- For a headset device, safety regulations require the resistors value to be R > 2RLΩ, where RL is the speaker impedance (e.g. 32Ω).For example, when using a 32Ω speaker the series resistance would be R > 64Ω.Headset DetectionThe G24 operates by default in the basic audio mode with the handset audio path, for DTMF tones and speech, and the alert loudspeaker device, for rings and alert tones, active.The headset path is an alternate audio path in basic mode. It is designed for, but not limited to, a personal hands-free audio device, a headset, using the headset microphone input device and the speaker output device. When this path is selected, the alert loudspeaker is disabled, and all the audio sounds are passed through to the headset path.The HDST_INT_N signal is used to switch between handset and headset audio paths in basic audio mode. This signal is set high by default at power up. Asserting the HDST_INT_N signal low enables the headset audio path and disables the handset and alert paths. Setting this signal high will disable the headset path and enable the handset and alert audio paths.The G24 supports dynamic switching between the handset and headset audio paths, during operation and call handling.Important: The HDST_INT_N signal does not operate in advanced audio mode. This signal's functionality is overridden by the AT+MAPATH command settings.Table 2-8: Speaker Port SpecificationsParameter Conditions Min Typ Max UnitOutput Volta g eNo loadSingle ended2.5 VPPGain Programmable in 3 dB steps021dBAC Output Impedance32 ΩDC Voltage 1.38 VTHD 32 Ω load200 Hz - 20 kHz0.1 %Isolation Speech, f> 4 kHz 60 dB
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 33Alert Loudspeaker PortThe alert loudspeaker is the default G24 power-up ringer. It is used for, but not limited to, sounding the G24 alerts, melodies, and rings. It is located at pins 63 and 65 on the G24 interface connector, named ALRT_N and ALRT_P respectively.It is designed with an internal amplifier supplied directly from VCC, which supplies 0.5W to the audio device. It may also be used as a single-ended output referenced to the G24 analog ground.Figure 2-21 shows the alert loudspeaker circuit and Table 2-9 gives the loudspeaker specifications.Figure 2-21: Differential Loudspeaker CircuitImportant: For safety regulations it is important to place series resistors on the alert output lines, as illustrated in Figure 2-21. The resistors value should be R = 0Ω at the design stage, but may be changed to a different value during audio safety testing, in case that alert level limitation is required.Figure 2-22: SIngle-ended Loudspeaker Circuit
Audio Interface34 Module Hardware Description May 31, 2007Important: When implementing a single ended loudspeaker design, it is required to place a series capacitor and resistor on the alert output line, as illustrated in Figure 2-22.The capacitor should be of low tolerance with values of C = 10-22 uF.The resistor value should be R = 0Ω at the design stage, but may be changed to a different value during audio safety testing, in case that alert level limitation is required.Digital Audio InterfaceThe G24 digital audio interface is a serial Pulse Code Modulation (PCM) bus, which uses linear 2's compliment coding. G24 is the PCM bus master, supplying the clock and sync signals to the application.The G24 digital interface is a 4 signal PCM bus, which includes a bit clock output signal for the bus timing, a frame sync output signal for audio sampling timing, and serial data input and output signals.Important: The PCM bus signals are shared internally by the analog audio interface and the digital audio interface. Therefore, when using the analog audio interface the PCM bus signals must be tri-stated or disconnected at the interface connector.Table 2-9: Alert Port SpecificationsParameter Conditions Min Typ Max UnitOutput Volt-ageNo loadSingle ended3.5 VPPGain Programmable in 3 dB steps021dBAC Output Impedance8ΩDC Voltage VCC/2VTHD 8 Ω load200 Hz - 20 kHz0.1 3 %Isolation 60 dB
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 35The digital audio interface supports 4 types of audio data formats, which define the PCM bus configuration and data rates:•Voice band audio - Intended for speech during voice calls and for mono rings and alerts.•Stereo audio - Includes 3 audio formats that support high quality stereo ring tones and alerts.The PCM bus configuration is defined by the audio data format that is sounded through the digital audio path, as described in Table 2-10.Voiceband AudioThis digital voice audio format is used for speech during voice calls and for mono rings and alerts.The PCM bus signal's configuration for voiceband audio is:•PCM_CLK - 520 kHz serial clock•PCM_FS - 8 kHz bit-wide frame-sync•PCM_DOUT - 13-bit linear audio data output•PCM_DIN - 13-bit linear audio data inputThe analog audio is sampled at an 8 kHz rate and converted to linear 13-bit serial PCM audio data. The serial data is transferred on the PCM bus in 16-bit word format, which includes 13 sampled data bits, and 3 added zero value bits.The 16-bit serial data is transferred in both directions after each sync signal's falling edge. The sync signal pulse duration is one clock period, after which the serial data is transferred in both directions for 16 consecutive clock periods.Following the 16-bit data transfer, the serial input and output data signals inactivate until the next sync pulse, which occurs every 125 µS (8 kHz). It is recommended the serial data signals will be High-Z during the inactive period.Important: In digital audio mode the input and output gains cannot be controlled by AT commands.Table 2-10: Digital Audio modesAudio Mode Frame Sync Sampling Bit Clock AT+CRTT TonesVoice 8 kHz 520 kHzMono tones 8 kHz 520 kHz 6 - 9 (7 default)Stereo low tones 20.05 kHz 705 kHz 12 - 38, 40 - 46Stereo mid tones 32 kHz 1024 kHz 48 - 49Stereo high tones 44.1 kHz 1.4 MHz 10, 11, 39, 47
Audio Interface36 Module Hardware Description May 31, 2007Figure 2-23 illustrates the PCM bus format of the voiceband audio configuration.Figure 2-23: Voiceband Mode PCM Bus Coding FormatStereo AudioThe digital stereo audio format is used for sounding stereo ring tones and alerts. It incorporates 3 modes of operation that support the different audio sampling rates, which are provided by G24 as ring tone melodies. The available ring tones may be selected by the AT+CRTT command.The PCM bus signal's configuration for stereo ring tones and alerts is:•PCM_CLK - 705 kHz - 1.4 MHz serial clock•PCM_FS - 22.05 kHz - 44.1 kHz word-wide frame-sync•PCM_DOUT - 16-bit linear audio data output•PCM_DIN - DisabledFigure 2-24 illustrates the PCM bus format of the stereo audio configurations.Figure 2-24: Stereo Mode PCM Bus Coding FormatOperating ModesThe G24 audio interface includes 2 modes of operation. Each operating mode defines the audio input and output devices to be used for each audio sound type and their programmable settings.Basic ModeBasic audio mode is the G24 default power-up audio configuration. Several audio paths are available in this mode, and their settings can be programmed through the AT command set.
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 37Table 2-11 describes the available audio paths in Basic mode.Advanced ModeAdvanced audio mode utilizes G24's unique set of AT commands for advanced audio programming. The expanded AT command set enables to define a specific audio path and setting, which are not part of the default configuration, for each type of audio sound (speech, DTMF tones, rings and alerts).Unlike basic audio mode, which provides predefined audio paths, the advanced audio mode provides full control over the G24 audio interface and its parameters, and differentiates between each type of audio sound.Table 2-12 describes the advanced mode audio programming features. These features are only a part of the complete advanced audio AT command set.Table 2-11: Basic Mode Audio PathsAudio Path Input Signal Output Signal DescriptionHandset MIC SPKR_N, SPKR_P Default audio path for speech and DTMF tones.Headset HDST_MIC SPKR_N, SPKR_P Alternate path for headset device.Enable by setting HDST_INT_N interface signal low.Alert ALRT_N, ALRT_P Default alert and ringer loudspeaker output device.Digital PCM_DIN PCM_DOUT Enable digital path by AT+MADIGITAL=1Table 2-12: Advanced Mode CommandsCommand DescriptionAT+MAPATH Sets the input device for voice, and the output devices for voice, DTMF tones, rings and alerts.AT+MAFEAT Enables and disables the speech processing algorithms - Echo suppression, noise sup-pression and sidetone.AT+MAVOL Sets the gain (amplification) level of the selected analog output device.AT+MMICG Sets the gain (amplification) level of the selected analog input device.AT+MADIGITAL Switches between analog and digital audio paths.
Audio Interface38 Module Hardware Description May 31, 2007Audio Programming InterfaceThe G24 incorporates a unique audio programming interface, through AT commands, which controls the following audio features:•Audio Path - Defines the input and output devices for speech, DTMF tones, rings and alerts.•Audio Gain - Defines the amplification (gain) level for input and output audio devices.•Audio Algorithm - Defines the speech processing features for voice calls.Figure 2-25 describes the audio programming interface options, which are defined by AT commands.Figure 2-25: Audio Programming InterfaceAudio AlgorithmsThe G24 audio interface features advanced speech processing algorithms for echo suppression, noise suppression and side-tone feedbackEnabling or disabling the algorithms can be configured separately for each audio path and operating mode through the AT command interface.The G24 also supports full rate (FR), half rate (HR), enhanced full rate (EFR) and adaptive multi-rate (AMR) speech coding algorithms, which are used by the GSM network. These algorithms are configured and operated by the GSM network provider.
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 39Table 2-13 gives the speech processing features.Gain ControlThe amplification (gain) level for each input and output device can be configured through AT commands. Both basic and advanced audio modes provide AT commands to set the desired gain levels for each audio path and audio sound type.Table 2-14 gives the gain control features.Gain levels for the input and output devices, which correspond to the values set by the AT commands, are described in Table 2-15 and Table 2-16.Table 2-13: Speech Processing FeaturesFeature AT Command Default Setting DescriptionBasic AdvancedEcho SuppressionATS96 AT+MAFEAT DisabledControls the echo and noise suppres-sion.Noise SuppressionSidetone ATS94 AT+MAFEAT Enabled Controls the sidetone.Table 2-14: Gain Control FeaturesDevice Gain Command Default Gain DescriptionBasic AdvancedMicrophoneAT+MMICG AT+MMICG3 Sets input speech gain level.Headset Micro-phone3 Sets input speech gain level.Speaker AT+CLVLAT+MAVOL4 Sets voice and DTMF gain.Alert Speaker AT+CRSL 4 Sets rings and alerts gain.Table 2-15: Speaker Port Gains for SpeechAT Command Value 0dBm0 Gain Level (dB)0dBm0 Output Level (mVRMS)0-36121 -33 17.52-30253 -27 34.5
Audio Interface40 Module Hardware Description May 31, 2007.Audio DesignThe audio quality delivered by G24 is highly affected by the application audio design, particularly when using the analog audio interface. Therefore, special care must be taken when designing the G24 audio interface. Improper design and implementation of the audio interface will result in poor audio quality.Poor audio quality is a result of electrical interferences, or noises, from circuits surrounding the audio interface. There are several possible sources for the audio noise:•Transients and losses on the power supply•EMI from antenna radiations•Digital logic switching noiseMost of the audio noise originates from the GSM transmit burst current surges (217 Hz TDMA buzz), which appear on the main power supply lines and antenna, but also indirectly penetrate the internal application's supplies and signals. The noises are transferred into the G24's audio circuits through the microphone input signals and then are amplified by the G24's internal audio amplifiers.To minimize the audio noise and improve the audio performance the microphone and speaker signals must be designed with sufficient protection from surrounding noises.4 -24 505 -21 706 -18 1007 -15 140Table 2-16: Microphone and Headset Microphone Port GainsAT Command Value0dBm0 Input Level (mVRMS)Maximum Input Level (mVRMS)0 87 350... ... ...3 63 250... ... ...16 15 55... ... ...31 4 11Table 2-15: Speaker Port Gains for Speech (Cont.)AT Command Value 0dBm0 Gain Level (dB)0dBm0 Output Level (mVRMS)
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 41The following guidelines should be followed to achieve best audio performance:•Reference the microphone input circuits to the G24 AGND interface signal.•If using single-ended audio outputs, they should be referenced to the G24 AGND interface signal.•Keep the audio circuits away from the antenna.•Use RF filtering capacitors on the audio signals, as described in Table 2-3.•The audio signals should not be routed adjacent to digital signals.•Isolate the audio signals by a surrounding ground plane or shields.•Filter internal supplies and signals that may indirectly affect the audio circuits, from noises and voltage drops.Analog GroundThe G24 interface incorporates a dedicated analog ground contact, AGND pin 59, which is internally connected to the G24's ground. The AGND signal is intended to provide a separate ground connection for the application's external audio devices and circuits.This signal provides an isolated ground connection directly from G24, which is separated from the noisy digital ground of the application. It is recommended to connect this signal to analog audio devices and circuits used by the application. Using a separate analog ground minimizes audio noises and improves the audio circuit's immunity from external interferences.
A/D Interface42 Module Hardware Description May 31, 2007A/D InterfaceThe G24 includes 5 Analog to Digital Converter (ADC) signals with 10-bit resolution, for environmental and electrical measurements. The ADC signals measure an analog DC voltage level on their inputs which is converted to a 10-bit digital value for further processing by G24 or the user application.The A/D signals operation and reporting mechanism is defined by the AT+MMAD command. Each A/D can be defined to provide several reports:•A single measurement.A single A/D measurement will take place and will be reported upon activation of the AT command.•An automatic periodical measurement.The A/D measures its input signal at a rate that is defined by the user application. Every measurement will generate an unsolicited message over the serial interface.•An automatic periodical measurement with predefined limits.The A/D measures its input signal at a rate that is defined by the user. The user also defines upper and/or lower limits for the A/D measurements. Each measurement is compared to these limits, and an unsolicited message is generated only if these limits are exceeded.Important: In case the defined periodical measurement rate is equal to, or shorter than, the defined sleep mode delay settings (ATS24), G24 will not enter low power mode.Table 2-17 below, lists the internal and external A/D signals provided by G24.Power Supply A/DThe main power supply (VCC) is constantly monitored internally by the G24 through a dedicated A/D signal, which is not accessible on the interface connector.The measured VCC level can be read and monitored by the user application through the AT+MMAD command, which returns the measured VCC level in Volts times 100.For example, a measured supply level of 3.65 Volts will be presented as 365 by the MMAD command.Table 2-17: A/D SignalsADC Name Description Pin # ADC #Min Max UnitVCC Power Supply ADC - 5 3.0 4.5 VTemp Temperature ADC - 4 -30(229)70(17)°C(ADC)ADC3 GPAD 3 47 3 0 2.3 VADC2 GPAD 2 43 2 0 2.3 VADC1 GPAD 1 37 1 0 2.3 V
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 43Important: During GSM transmissions the power supply may suffer voltage drops. This can cause frequent and wide changes in the power supply A/D measurements. This should be taken into account when designing and operating the G24 power supply A/D interface.Table 2-18 gives the supply A/D specifications.Temperature A/DThe G24 incorporates an internal temperature sensor circuit, which is used to monitor the operating temperature. The temperature is constantly monitored by G24 through a dedicated A/D signal, which is not accessible at the interface connector. Figure 2-26 shows the temperature A/D characteristics.Figure 2-26: Temperature A/D CharacteristicsTable 2-18: Supply A/D SpecificationsParameter Conditions Min Typ Max UnitMeasurement Range3.0 4.5 VResolution 10 mV
A/D Interface44 Module Hardware Description May 31, 2007The measured temperature level can be monitored by the user application through the AT+MMAD command, which returns a digital decimal value that represents the measured temperature level.The actual temperature level (in degrees Celsius) can be derived from Table 2-19:A temperature level approximation can also be obtained using the following 5th order polynomial formula:Table 2-19: Temperature Conversion ValuesTemperature(°C)ADCValue Temperature(°C)ADCValue Temperature(°C)ADCValue-30 229 4 114 38 43-29 226 5 111 39 41-28 223 6 108 40 40-27 219 7 105 41 39-26 216 8 102 42 38-25 213 9 100 43 37-24 210 10 97 44 36-23 206 11 94 45 34-22 203 12 92 46 33-21 199 13 89 47 32-20 196 14 87 48 31-19 192 15 84 49 31-18 189 16 82 50 30-17 185 17 79 51 29-16 182 18 77 52 28-15 178 19 75 53 27-14 175 20 73 54 26-13 171 21 71 55 26-12 168 22 69 56 25-11 164 23 67 57 24-10 160 24 65 58 23-9 157 25 63 59 23-8 153 26 61 60 22-7 150 27 59 61 21-6 146 28 57 62 21-5 143 29 56 63 20-4 140 30 54 64 20-3 136 31 52 65 19-2 133 32 51 66 19-1 130 33 49 67 180 127 34 48 68 181 123 35 47 69 172 120 36 45 70 173 117 37 44
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 45y = -1.3e-9 * X5+8.91e-7 * X4-2.4e-4 * X3 + 3.298e2 -2.56 * X + 103.30Where X is the digital temperature value reported by the MMAD command.Table 2-20 gives the temperature A/D specifications.General Purpose A/DThe G24 provides 3 general purpose A/D (GPAD) signals for customer application use. Each A/D signal can monitor a separate external voltage and report its measured level independently to the application, through the AT command interface.The GPAD signals measure a DC voltage level of 0 - 2.3 V, which is converted internally to a 10-bit digital value. The user application can monitor the A/D voltage level through the AT+MMAD command, which returns the measured DC level in Volts times 100.For example, a measured analog DC level of 1.75 Volts will be presented as 175 by the MMAD command.Table 2-21 gives the GPAD specifications.Table 2-20: Temperature A/D SpecificationsParameter Conditions Min Typ Max UnitMeasurement Range-30 70 °CADC Range MMAD Value 229 17 ADCTolerance 5 %Table 2-21: GPAD SpecificationsParameter Conditions Min Typ Max UnitMaximum Input VoltageOperating range -0.1 2.75 VMeasurement Volta g eADC range 0 2.3 VResolution 10 mV
Controls and Indicators Interface46 Module Hardware Description May 31, 2007Controls and Indicators InterfaceThe G24 incorporates several interface signals for controlling and monitoring the module's operation. The following paragraphs describes these signals and their operation.Table 2-22 gives a description of the controls and indicators signals.ResetThe RESET_N output signal indicates the G24's operating status. This signal is set high after power up, when G24 is operating. It is set low when G24 is powered off.When the RESET_N signal is low, the G24 interface signals are disabled and do not represent any valid data or state. Furthermore, any input signals connected to the G24 interface must be disabled (tri-state) or set low when RESET_N is low.VREF Reference RegulatorThe G24 incorporates a regulated voltage output, VREF. The regulator provides a 2.75V output for use by the customer application. This regulator can source up to 200 mA of current to power any external digital circuits.Important: The VREF regulator is powered from the G24's main power supply, and therefore any current sourced through this regulator originates from the G24 VCC supply. The overall VCC current consumed by G24 is directly affected by the VREF operation. The G24 current consumption rises with respect to the current sourced through VREF.Table 2-22: Controls and IndicatorsConnector Pin Signal Name Description25 RESET_N G24 system reset output indicator.When high, G24 is operating.27 VREF 2.75V regulated output.Supplies external circuits up to 200mA.26 WKUPO_N Host application wake-up signal indi-cator.41 ANT_DET Antenna physical connection detect indicator.49 GPRS/GSM Network status indicator.39 TXEN_N Transmission burst indication.28, 30, 32, 34, 36, 38, 40, 42GPIO 1-8 General purpose IO signals for cus-tomer use.
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 47The VREF regulator incorporates 3 operating modes that are controlled by the AT+MVREF command. These modes define the regulator operating state relative to the G24's operating mode.Figure 2-27 shows the VREF power-up timing.Figure 2-27: VREF Power-up TimingOFF ModeIn this mode the VREF regulator is disabled and its output drops to 0V, regardless of the G24 operating state.Standby ModeThe Standby operating mode is the default mode when G24 powers on. In this mode VREF follows the G24's operating state.When the G24 is in low power mode, Sleep mode, the VREF regulator is also in a low power state. In this state the VREF regulated output is limited to providing only 2 mA of current maximum, while maintaining the 2.75V output level.When G24 is in Idle mode, or wakes up temporarily from low power mode, the VREF regulator returns to full operation, supplying up to 200 mA.Active ModeIn this mode the VREF regulator is always fully active while G24 is operating, regardless of the G24 operating mode.
Controls and Indicators Interface48 Module Hardware Description May 31, 2007Table 2-23 gives the VREF specifications.Wakeup OutSome applications incorporate their own power saving mode, in which they operate with minimal functionality, including disabling of interfaces and serial communications.The wakeup-out (WKUPO_N) signal is an active low output, which is designed to support a low power mode feature in the host application. This signal is used by G24 to indicate that it requires to communicate with the host application through the serial interface, due to an incoming call or data, or an unsolicited event. Applications that incorporate a low power mode should use this signal as an indication to switch from low power mode to normal operation, and activate the serial interface.The wakeup-out mechanism, using the WKUPO_N signal, is controlled by 2 AT commands (see Figure 2-28):•ATS102 - Defines the delay time in milliseconds that G24 will wait, after asserting the WKUPO_N signal low, before sending data on the serial interface. This delay is required to allow the application enough time to reactivate from low power mode and switch to normal mode.If ATS102=0, which is the default value, the WKUPO_N signal and mechanism is disabled.In case the serial interface incorporates hardware flow control signals, the data will be sent according to their state, after the ATS102 delay time has expired.•ATS100 - Defines the application minimal wakeup duration, in seconds, for a single wakeup event. This time definition is required to avoid frequent unnecessary wakeup events and consequent ATS102 delays.The application may return to low power mode after the serial interface has been inactive for the duration set by ATS100. This duration is measured from the last data sent or received on the serial interface.Table 2-23: VREF SpecificationsParameter Conditions Min Typ Max UnitVOUT IOUT = 200 mA -3% 2.75 +3% VIOUT Active modeStandby mode50 2002mALoad regula-tion0.27 mV/mALine regula-tion5mVPSRR 20 Hz - 20 kHz 60 dB
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 49Figure 2-28: WKUPO_N OperationThe following guidelines apply to the wakeup-out mechanism:•G24 will set the WKUPO_N signal low to indicate that in has data to send through the serial interface.•G24 will start sending the data to the application after the delay defined by ATS102.•The WKUPO_N signal will remain low while data is being sent to the host application.•The host application should keep its serial interface active, and not switch to low power mode, while the WKUPO_N signal is low.•G24 will set the WKUPO_N signal high when it has completed sending the data.•The application serial interface must stay active, and not switch to low power mode, for the duration set by ATS100, after WKUPO_N is set high.•G24 will not set the WKUPO_N signal low if it needs to send additional data during the ATS100 delay time.•The application may switch to low power mode after the WKUPO_N signal is set high and the serial interface has been inactive for the duration set by ATS100.Antenna DetectionThe G24 incorporates an internal antenna detection circuit, which senses the physical connection and removal of an antenna or antenna circuit on the G24 antenna connector. The antenna detection state is reported to the application through the ANT_DET output signal, and may also be queried by the ATS97 command.The detection circuit senses DC resistance to ground on the G24 antenna connector.A DC resistance below 100kohm (+10%) is defined as a valid antenna connection, and the ANT_DET output signal is set high.GPRS/EGPRS DetectionThe GPRS output signal indicates the network GPRS/EGPRS connection status. When G24 is connected to a GPRS/EGPRS network, this signal is enabled. When G24 is not connected to the GPRS/EGPRS network this signal is disabled.
Controls and Indicators Interface50 Module Hardware Description May 31, 2007Transmission IndicatorThe TXEN_N output signal indicates when G24 is transmitting over the GSM network. This signal follows the G24 GSM transmit bursts. This signal is set low during transmission burst, and set high when no transmission is in progress.Figure 2-29 shows the TXEN_N operation.Figure 2-29: TXEN_N OperationGeneral Purpose I/OThe G24 incorporates 8 general purpose IO signals for the user application. Each GPIO signal may be configured and controlled by AT command. These signals may be used to control or set external application circuits, or to receive indications from the external application.
Chapter 2: Hardware Interface Description May 31, 2007 Module Hardware Description 51Antenna InterfaceThe G24 antenna connector is the RF interface to the GSM network.The antenna interface is terminated by an MMCX connector type, which is 50Ω impedance matched at the relevant GSM frequencies.The antenna or antenna application must be installed properly to achieve best performance.Table 2-24 gives the antenna interface specifications.Table 2-24: Antenna Interface SpecificationsParameter Conditions SpecificationsGSM 850TX 824 - 849 MHzRX 869 - 893 MHzGSM 900TX 880 - 915 MHzRX 925 - 960 MHzDCS 1800TX 1710 - 1785 MHzRX 1805 - 1880 MHzPCS 1900TX 1850 - 1910 MHzRX 1930 - 1990 MHzGain 0 dBi (unity) gain or greaterImpedance 50ΩVSWR Less than: 2.5:1
Antenna Interface52 Module Hardware Description May 31, 2007
May 31, 2007 Module Hardware Description 53Chapter 3: Electrical and Environmental SpecificationsAbsolute Maximum RatingsTable 3-1 gives the maximum electrical characteristics of the G24 interface signals.Caution: Exceeding the values may result in permanent damage to the module.Table 3-1: Maximum RatingsParameter Conditions Min Max UnitVCC Supply -0.2 4.5 VDigital Input Signals(Except for IGN, VBUS, USB_DP, USB_DN)G24 powered on -0.2 3 VAnalog Input Signals(Audio, A/D inter-faces)G24 powered on -0.2 2.75 VAll Input Signals(Except for IGN, VBUS, USB_DP, USB_DN)G24 powered off -0.2 0.2 VIGN signal -0.2 16 VVBUS signal -0.2 10 VUSB_DP, USB_DN -0.2 5 V
Environmental Specifications54 Module Hardware Description May 31, 2007Environmental SpecificationsTable 3-2 gives the environmental operating conditions of the G24 module. Caution: Exceeding the values may result in permanent damage to the module.Application Interface SpecificationsTable 3-3 summarizes the DC electrical specifications of the application interface connector signals.Important: Interface signals that are not used by the customer application must be left unconnected. G24 incorporates the necessary internal circuitry to keep unconnected signal in their default state. Do not connect any components to, or apply any voltage on, signals that are not used by the application.Important: It is recommended to place a pull-down resistor in the customer application, on the IGN signal. A 100 kohm resistor, or less, is acceptable.Important: Signals that are defined as "Do Not Use", or DNU, must remain externally unconnected in any case. These signals are reserved for future use.Table 3-2: Environmental RatingsParameter Conditions Min Max UnitAmbient Operating Temperature-20 60 °CStorage Temperature -40 85 °CESD At antenna connector Contact AirAt interface connector± 6± 15± 1KV
Chapter 3: Electrical and Environmental Specifications May 31, 2007 Module Hardware Description 55Table 3-3: Interface SpecificationsPin # Signal Name Description I/O Active H/L Internal PU/PD Parameter ConditionsLevelMin Typ Max UnitsPower:1GND Ground2345VCC DC power supplyIVINIMAXIOFFVCC = 3.6 V3.3 3.6 4.2 V61.9 2.0 A775 85 µA8Control:27 VREF Reference regulator out-putOVOUTIOUTIOUT< 200 mAActive modeStandby mode-3% 2.7550+3%2002VmA16 WKUPI_N G24 wakeup inputI L 22K PU VIH VIL 2.0 2.77503.00.4V26 WKUPO_NHost wakeup outputO L 22K PU VOH VOL IOUT < 2 mA 2.575 2.77500.2V25 RESET_N Reset signal outputO L 47K PD VOH VOL IOUT < 4 mA 2.675 2.77500.1V53 ON_N On/Off switch I L 200K PUVIH VIL2.0 2.77503.00.2V51 IGN Ignition input I H VIH VIL2.00160.4V39 TXEN_N Transmit indi-catorOL VOH VOLIOUT < 4 mA 2.675 2.77500.1V41 ANT_DET Antenna pres-ence indicatorOL VOH VOLIOUT < 2 mA 2.575 2.77500.2V49 GPRS GPRS/EGPRS cov-erage indica-torOL VOH VOLIOUT < 2 mA 2.575 2.77500.2V
Application Interface Specifications56 Module Hardware Description May 31, 2007UART1:21 TXD_N UART1 TXD I L 100K PUVIHVILVOHVOLIOUT < 2 mA2.02.5752.77502.77503.00.40.2V11 RXD_N UART1 RXD O L 100K PU9RTS_N UART1 RTS I L 100K PU15 CTS_N UART1 CTS O L19 DTR_N UART1 DTR I L 100K PU13 DSR_N UART1 DSR O L 100K PU17 DCD_N UART1 DCD O L 100K PU23 RI_N UART1 RI O L 100K PUUART2:29 RXD2_N UART2 RXD O L 100K PU VIHVILVOHVOLIOUT < 2 mA2.02.5752.77502.77503.00.40.2V31 TXD2_N UART2 TXD I L 100K PU33 RTS2_N UART2 RTS I L 100K PU35 CTS2_N UART2 CTS O L 100K PUUSB:10 USB_VBUS USB bus powerIH VIHVILNOTE 14.5 5.005.250.2V12 USB_DP USB bus serial dataI/O H VIHVILVOHVOL3.03.03.303.303.60.80.3V14 USB_DN USB bus serial dataI/O LTable 3-3: Interface Specifications (Cont.)Pin # Signal Name Description I/O Active H/L Internal PU/PD Parameter ConditionsLevelMin Typ Max Units
Chapter 3: Electrical and Environmental Specifications May 31, 2007 Module Hardware Description 57SIM Card:50 SIM_PD_N SIM presence detectI L 47K PU VIHVILNOTE 22.0 2.77503.00.4V48 SIM_VCC SIM supply O H VOH -3% 2.85 +3% V44 SIM_RST_NSIM reset O L 5.6K PUVOHVOL2.8500.4V52 SIM_DIO SIM serial dataI/O H 5.6K PU46 SIM_CLK SIM clock O H 5.6K PUDigital Audio:18 PCM_DINDigital audio receiveI H 100K PDVIHVILVOHVOLIOUT < 2 mA2.02.5752.77502.77503.00.40.2V20 PCM_DOUTDigital audio transmitO H 100K PU22 PCM_CLK Digital audio clockO H 100K PD24 PCM_FS Digital audio frame sync.O H 100K PDTable 3-3: Interface Specifications (Cont.)Pin # Signal Name Description I/O Active H/L Internal PU/PD Parameter ConditionsLevelMin Typ Max Units
Application Interface Specifications58 Module Hardware Description May 31, 2007GPIO:28 GPIO1 General pur-pose I/OI/O 100K PUVIHVILVOHVOLIOUT < 2 mA2.02.5752.77502.77503.00.40.2V30 GPIO2 General pur-pose I/OI/O 100K PU32 GPIO3 General pur-pose I/OI/O 22K PU34 GPIO4 General pur-pose I/OI/O 22K PU36 GPIO5 General pur-pose I/OI/O 22K PU38 GPIO6 General pur-pose I/OI/O 22K PU40 GPIO7 General pur-pose I/OI/O 22K PU42 GPIO8 General pur-pose I/OI/O 22K PUAudio:67 SPKR_N Speaker invertedORLVA C PP Single ended, no load32 Ω69 SPKR_P Speaker O 2.5 V63 ALRT_N Alert speaker invertedORLVA C PP Single ended, no load8Ω65 ALRT_P Alert speaker O 3.5 V61 MIC Microphone inputIRINVA C PP1K2.5ΩV59 AGND Audio ground57 HDST_MICHeadset microphone inputIRINVPP1K2.5ΩV55 HDST_INT_NHeadset detect inter-ruptI L 200K PUVIHVIL2.0 2.77503.00.2VTable 3-3: Interface Specifications (Cont.)Pin # Signal Name Description I/O Active H/L Internal PU/PD Parameter ConditionsLevelMin Typ Max Units
Chapter 3: Electrical and Environmental Specifications May 31, 2007 Module Hardware Description 59Note 1:Per USB Specifications Rev 2.0.Note 2:Per ISO 7816-3 IC specifications.A/D:37 ADC1 General pur-pose A/DIVIN 02.75V43 ADC2 General pur-pose A/DIVIN-ACTIVE 02.3V47 ADC3 General pur-pose A/DIIADC 0.75 1 mA45 UID Do Not Use Resolution 10 mVDisplay:54 CLI_CS Do Not Use60 LCD_RS Do Not Use56 LCD_DATADo Not Use58 LCD_CLK Do Not UseData Logger:70 SPI_CS Do Not Use62 SPI_IRQ_NDo Not Use64 SPI_DIN Do Not Use68 SPI_DOUTDo Not Use66 SPI_CLK Do Not UseTable 3-3: Interface Specifications (Cont.)Pin # Signal Name Description I/O Active H/L Internal PU/PD Parameter ConditionsLevelMin Typ Max Units
Application Interface Specifications60 Module Hardware Description May 31, 2007
May 31, 2007 Module Hardware Description 61Chapter 4: Mechanical SpecificationsBoard DimensionsFigure 4-1 describes the G24 mechanical characteristics.Figure 4-1: G24 Mechanical Characteristics
Interface Connector Specifications62 Module Hardware Description May 31, 2007Interface Connector SpecificationsThe G24 uses a single 70-pin, 0.5 mm pitch, board to board connector for the application interface, which is available in 2 stacking height versions, as described in Table 4-1.Figure 4-2 shows the G24 interface connectors.Figure 4-2: G24 Interface ConnectorsTable 4-2 describes the G24 interface connectors characteristics.Table 4-1: G24 interface connector options G24 Connector Mating Connector Stacking HeightMolex 53748-0708 Molex 52991-0708 3.0 mmMolex 53885-0708 Molex 54102-0708 2.5 mmTable 4-2: Interface Connector SpecificationsParameter 53748 (3.0 mm) 53885 (2.5 mm)Contacts 70 70Rows 22Pitch 0.5 mm 0.5 mmMaximum Current 500 mA 500 mAMaximum Voltage 50 V 50VContact Resistance 50 mΩ maximum 40 mΩ maximumInsulation Resistance 100 MΩ minimum 100 MΩ minimumDurability 50 mated cycles maximum30 mated cycles maximumStacking Height 3.0 mm 2.5 mmMates with Molex 52991-0708 Molex 54102-0708
Chapter 4: Mechanical Specifications May 31, 2007 Module Hardware Description 63Mating ConnectorsThe mating connectors incorporate the same electrical and mechanical characteristics as the corresponding G24 interface connectors, which are described in Table 4-2.Figure 4-3 provides a reference drawing of the mating connectors mechanical dimensions.Figure 4-3: Mating Connectors DimensionsFor more information on the G24 mating connectors, please refer to the Molex web site at http://www.molex.com.
RF Connector Specifications64 Module Hardware Description May 31, 2007RF Connector SpecificationsThe G24 uses a standard MMCX receptacle connector for the radio interface. The connector is manufactured by Amphenol, PN MMCX6251S5.Figure 4-4 shows the MMCX connector dimensions.Figure 4-4: MMCX Connector DimensionsTable 4-3 describes the G24 RF connector characteristics.Mating ConnectorThe RF mating connector should be a standard MMCX plug connector or cable assembly, which corresponds to the G24 MMCX connector specifications.Any standard MMCX connector or application from different manufacturers may be mated with G24.Table 4-3: RF Connector SpecificationsParameter SpecificationsRated Voltage 335 VRMSImpedance 50 ΩContact Resistance 5 mΩ center contact2.5 mΩ outer contactInsulation Resistance 1000 MΩInsertion Force 3.4 lbs maximumWithdrawal Force 4.5 lbs maximumContact Retaention Force 4 lbs maximumDurability 500 mated cycles maximum
Chapter 4: Mechanical Specifications May 31, 2007 Module Hardware Description 65Such a cable assembly example is the Huber-Suhner PN 11_MMCX-50-1-2/111_OH, which is illustrated in Figure 4-5.Figure 4-5: Optional MMCX Cable Assembly
G24 Mounting66 Module Hardware Description May 31, 2007G24 MountingThe G24 incorporates 2 mechanical holes for installing the module onto the application board. The holes are 2.4 millimeters in diameter, which accommodates several types of mechanical elements.Several mechanical approaches may be applied to mount and fasten G24 to the application board. Using M2 screws with suitable washers to mount the module onto spacers, a bracket or chassis is a recommended design.Special attention must be paid to the area surrounding the G24 mounting holes. Several electrical components, which are not shielded, are located near the holes. These components must not be in contact with the mounting elements or with other parts of the application board, and care must be taken to avoid any damage.The holes are used for mechanical mounting of G24 to the application board but also for grounding support. Using conductive elements to install G24 significantly improves the overall grounding of the module and therefore improves the G24 performance and stability.It is required to use screws or other mechanical elements to fasten G24 to the application board, but it is highly recommended to use conductive elements to improve the module's performance.
May 31, 2007 Module Hardware Description 67Chapter 5: Service and TestingServiceThis section provides contact information for any possible queries that may arise, for example:•Have questions?•Having trouble getting the Developer Board set up?•Technical questions?•Configuration questions/problems?•Technical operating problems?•Need documentation?Who to Contact?The GSM/CDMA Data Module Customer Support Center is ready to assist you on integration issues.Direct Customer. Use this following email address to contact customer assistance: M2M.CustomerCare@motorola.comNote: The support services provided by Motorola are subject to the agreement between the customer and Motorola and may be at an additional charge to the customer. Motorola will inform the customer in advance of any such charge.Indirect Customer. Send requests to your distributor and not to Motorola help desk.Required Query InformationEvery new call/problem report, directly from a Direct Customer or from a distributor, should be directed to the help desk email address noted above in “Who to Contact?” . It is recommended to report each individual issue in a separate email. The following information is required when reporting a problem:•Customer name and address•Customer contact information for this request, including:–Name–Telephone–Fax number–Mobile number–Email address•Product name (G24)
Service68 Module Hardware Description May 31, 2007•Software version of the unit (ATI8 command) or model number•PCB version (located on the PCB near the RF connector)•Severity of the problem •Problem description, including:–Operator name–Type of SIM card (for example, Test, Pre-paid, or 5v/3v/1.8v)–Setup Configuration (such as Developer Board, handset, host, connections, and so on)–Detailed scenario from startup–Log of all the commands and the responses, beginning from startup•Answers to the following questions:–Was the same scenario tested on the Developer Board and the PC to reproduce the problem?–How many units do you have, and how many of them have this problem?–How often does the problem recur?In addition to the information requested above, send the following AT commands and the HyperTerminal log with the responses:•AT+CMEE=2 // to get textual error message•AT+CPIN? // to get SIM card status•AT+CREG? // to see if the TXVR is registered to the network•AT+CSQ // to get the signal strength (RX level)•AT+CGSN // to read the IMEI number of the unit•ATI3 // to get the software version of the TXVR•AT\S // to get the setting of basic AT commands•AT+CMER=0,0,1,1 // to get messages and indicators from the handset display to the DTE
Chapter 5: Service and Testing May 31, 2007 Module Hardware Description 69Service CentersRMA Logistics13801 Diplomat Dr.Farmers Branch, TX 75234-8813 UShttp://www.rmslogistics.com/contact-us.aspMotorola Electronics Taiwan PCS11F, No, 296, Sec. 4, Jen-Ai RoadTaipei, 106, Taiwan, R.O.CMotorola GmbHAm Sophienhof 10D-24941 FlensburgGermanyMotorola Communications ISRAEL Ltd.Service Operation Attention: Shukrun Ofer3 Krementski StreetTel Aviv, Israel 67899Telephone: (972) 3 5658829JNB Electronics Pty Ltd.347 Settlement Road, ThomastownVIC 3074AustraliaFlextronicsTransportation group leaderZalaegerszeg Industrial Park 1 PCCBuilding 1 PCC Posta u. 63H-8900 ZalaegerszegHungaryBGH do Brasil Comunicações e Serviços Ltda.Al Ceci, 534 - Galpão 3Barueri - SP - BrazilTel: 54 11 4309 2046FeiHongDaLi Telecommunications Technology Co.Ltd.,TianjinSHiB-6F JuFu Yuan Building XinKai Road, Hedong District, Tianjin 300011ChinaField service should be coordinated with the Service Manager in Motorola using the following email address: n2csfs01@motorola.com
Testing a Standalone Unit70 Module Hardware Description May 31, 2007Testing a Standalone UnitThis section describes how to perform a G24 functionality test, whose purpose is to:•Introduce the user to the G24•Explain how to work with the G24 unit•Describe how to evaluate basic G24 featuresThe test setup provides a wide platform through which a G24 unit can be evaluated. The specific test procedure described below covers only a few of the G24’s many features. Using this setup, you can perform several additional tests on the G24.The test is performed using two modems, one of which is the G24. The modems communicate with each other through a single computer, which also controls their operation.The test requires knowledge about the operation of the G24 Developer’s Kit, terminal applications and AT commands. Refer to relevant documentation for assistance.To perform the test, you need the following:•A G24 OEM cellular engine unit•A G24 Developer's Kit•A desktop or laptop computer, which includes:–A free serial communications port (RS232)–A connected and active line modem (internal or external)–A terminal application (such as HyperTerminal)Test SetupTo Setup the G24 TestFollow this procedure (Figure 5-1) to set up your equipment before performing the test:1. Verify that the computer you intend to use for the test is equipped with a working line modemYou can use a second G24 unit instead of the line modem. When doing so, you must repeat the setup procedure that follows for the additional G24.2. Set up the G24 and the Developer Board as described in “Initial Setup” in “Chapter 2: Developer Board and Interfaces Description” in the “G24 Developer’s Kit” (Motorola part no. 6889192V26)3. Verify that the G24 has adequate reception from the local GSM network4. Connect the Developer Board’s RS232 port to the computer’s serial port5. Open a terminal application window (such as HyperTerminal) and configure it to operate with the serial port occupied by the G24
Chapter 5: Service and Testing May 31, 2007 Module Hardware Description 716. Open a second terminal window and configure it to operate with the serial port occupied by the line modemFigure 5-1: Test SetupComputer Developer Boardwith G24 unitLine Modem(internal or external)To telephone linewall outlet RS232PortSerialPortSerialPortSerialCable
Testing a Standalone Unit72 Module Hardware Description May 31, 2007Test ProcedureTo Perform the G24 TestFollow the procedure below to perform the G24 test:1. Verify that the line modem is functioning and communicating with the computer by entering the AT command at in the modem’s terminal windowThis common AT command prompts a properly working modem to reply OK.2. Verify that the G24 is functioning and communicating with the computer by performing the following AT commands in the G24 terminal window:•ati7—prompts G24 identificationThe G24 will reply G24 OEM Module.•ati8—prompts the G24 software version3. Make a CSD call from the G24 to the line modem or the reverse using the atd and ata commands in the appropriate window4. Verify that a connection between the two modems is established5. Select any file to transfer between the two modemsThe file can be any existing file, or a new file created specifically for the test.6. Send the file either from the G24, or to the G24, through the terminal application using the terminal application’s send/receive file options7. When the file transfer is complete, use the ath command in any of the terminal windows to terminate the callThis step completes the test. You can now continue to perform additional tests using the same setup, or change the setup as required.
May 31, 2007 Module Hrdware Description Acr & Abbr-1Acronyms and Abbreviations Abbreviation Full NameAAMR Adaptive Multi RateAAOC Advice of ChargeBBR Baud RateBbps Bits Per SecondCCSD Circuit Switched DataCCTS Clear to SendDDCD Data Carrier DetectDDCE Data Communication Equipment (such as modems)DDCS Digital Cellular System (GSM in the 1800MHz band)DDOC Department of Communications (Canada)DDRX Discontinuos ReceptionDDSP Digital Signal ProcessorDDSR Data Set ReadyDDTE Data Terminal Equipment (such as terminals, PCs and so on)DDTMF Dual Tone MultiFrequencyDDTR Data Terminal ReadyDDTX Discontinuos TransmissionEEFR Enhanced Full RateEEGPRS Enhanced General Packet Radio ServiceEEGSM Extended Global System for Mobile CommunicationsEEIRP Effective Isotropic Radiated PowerEEMC Electromagnetic CompatibilityEEOTD Enhanced Observed Time DifferenceEEPOS Electronic Point of SaleEERP Effective Radiated PowerEESD Electrostatic DischargeEETSI European Telecommunication Standards InstituteABCDE
F - PAcr & Abbr-2 Module Hrdware Description May 31, 2007FFCC Federal Communications Commission (U.S.)FFR Full RateFFTA Full Type ApprovalGGCF GSM Certification ForumGGPIO General Purpose Input/OutputGGPRS General Packet Radio ServiceGGSM Global System for Mobile CommunicationsHHR Half RateIIC Integrated CircuitLLNA Low-noise AmplifierMMMCX Miniature Micro CoaxMMO Mobile OriginatedMMT Mobile TerminatedOOEM Original Equipment ManufacturerPPCB Printed Circuit BoardPPCL Power Class LevelPPCM Pulse Code ModulationPPCS Personal Communication System (also known as GSM 1900)PPD Pull DownPPDA Personal Data AssistantPPDU Packet Data UnitPPLL Phase-locked LoopPPTCRB PCS-1900 Type Certification Review Board (GSM North America)PPU Pull UpAbbreviation Full NameFGHILMOP
R - T Acronyms and Abbreviations May 31, 2007 Module Hrdware Description Acr & Abbr-3RR&TTE Radio and Telecommunications Terminal EquipmentRRMS Root Mean SquareRRI Ring IndicatorRRTS Request To SendSSAR Specific Absorption RateSSIM Subscriber Identity ModuleSSMS Short Message ServiceSSPI Serial Peripheral InterfaceTTDMA Time Division Multiple AccessAbbreviation Full NameRST
U - VAcr & Abbr-4 Module Hrdware Description May 31, 2007UUART Universal Asynchronous Receiver TransmitterUUSB Universal Serial BusUUSSD Unstructured Supplementary Services DataVVCC Voltage Common CollectorVVSWR Voltage Standing Wave RatioAbbreviation Full NameUV
May 31, 2007 Module Hardware Description Index-1IndexAAntenna Installation, xiApprovalsRegulatory, 5BBlock Diagram Description, 7EEnvironmentalSpecifications, 3GG24Abbreviations, 2Antenna Installation, xiBlock Diagram Description, 7Product Specifications, 2Regulatory Approvals, 5Safety Precautions, xStandards, xiTerms and Abbreviations, 2Testing, 70User Operation, xOOrganization of Manual, xixPPhysical Specifications, 2Precautions, xProduct Specifications, 3RRegulatory Approvals, 5SSafety Precautions, xSpecifications, 2Environmental, 3Physical, 2Standards, xiSupport Center, 67TTerms, 2Testing, 70Test Procedure, 72Test Setup, 70UUser Operation, x
Index U - U Index-2 Module Hardware Description May 31, 2007
@6889192V27@6889192V27-FMOTOROLA and the Stylized M Logo are registered in the US Patent & Trademark Office. All other product or service names are the property of their respective owners.©Copyright 2007 Motorola, Inc.Java™ Technology and/or J2ME™ : Java and all other Java–based marks are trademarks or registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries.UNIX® : UNIX is a registered trademark of The Open Group in the United States and other countries.

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