DENSO Korea EN00120 SMART KEY ECU User Manual 06 EN00120

DENSO KOREA ELECTRONICS CORPORATION SMART KEY ECU 06 EN00120

User Manual

Smart Key ECUProduct OutlineProduct DescriptionProduct Type Number %&""#$"RF characteristic Nominal frequency 433.92MHzLocal oscillator frequency 52.9025MHz (Crystal)RF Antenna Internal antennaLF characteristic Nominal frequency 134.2kHzLocal oscillator frequency 4.2944MHz (Crystal)LF Antenna External antenna (Ferrite antenna coil)Transpondercharacteristic Nominal frequency 134.2kHzLocal oscillator frequency 4.00MHz (Ceramic Resonator)Transponder Antenna External antenna (antenna coil)Power Supply Nominal supply voltage 12V DCThe Smart Key system is a comfortfeature that allows the user to lock, unlockthe doors of the vehiclewithout using amechanical key.The user has to carry with him the SmartKey Fob as a wireless authentication isperformed when toggle buttonor StartStop Button inputs are triggered.For communication with the SMARTKeyFOB, Smart Key ECUgenerates arequest (challenge) as an encoded andmodulated signal (134.2 kHz..) at theinductive antenna outputs and receivesthe SMART KeyFOB's response via theexternal RF ANT and internal receiverThis product is installed inside the vehicle.AppearanceUnit : mm
2. Technical description of the system2.1 Type number-Smart Key ECU : EN001202.2 Specifications- Nominal Power supply voltage : 12VDCReceiver(RF)-Nominal frequency : 433.92MHz-Oscillator frequency : 52.9025MHz (Crystal)-Type of modulation : FSK(F1D)-Type of receiving system : Super-heterodyne-Antenna : RF ANT :Internal antennaTransmitter(LF)-Nominal frequency : 134.2kHz-Oscillator frequency : 4.2944 MHz (Crystal)-Type of modulation : OOK(A1D)-Antenna : LF ANT1: External antenna (inside Cabin)LF ANT2: External antenna (inside Trunk)LF ANT3: External antenna (inside Bumper)LF ANT4: External antenna (Built in Door HDL)LF ANT5: External antenna (Built in Door HDL)Transponder-Nominal frequency : 134.2kHz-Oscillator frequency : 4.00MHz (Resonator)-Type of modulation : OOK(A1D)-Antenna : TP ANT:External antenna (Built in SSB)
3. Outline of the systemA Smart Key system is a comfort feature that allows the user to lock, unlock withoutusing a mechanical key.Once the user has accessed into the vehicle, with his Smart Key Fob he has thepossibility to switch between terminals (OFF-ACC-IGN) and to start the engine.The user has to carry with him the Smart Key Fob as a wireless authentication isperformed when toggle button or Start Stop Button inputs are triggered.3.1. Smart Key ECUThe SMK manages all functions related to “SMK Start”The SMK unit reads the inputs (e.g. Start Stop Button), controls the outputs (e.g. exteriorand interior antennas), and communicates via the CAN network as well as a single lineinterface to further devices of the car.For communication with the SMART FOB, SMK generates a request (challenge) as anencoded and modulated signal (134.2 kHz) at the inductive antenna outputs andreceives the SMART key FOB's response via the internal RF ANT and internal receiver.The LF antenna amplifier/driver generates a sinusoidal carrier signal (134.2 kHz), whichis distributed to the different antennas. The signal is 100%-ASK modulated by switchingon and off the carrier.3.2. LF Antennas:Inductive antennas in and at the vehicle are used to transform the current, driven by theSMK antenna driver, into a magnetic field (134.2 kHz), which is the carrier for the SMKchallenge.One antenna covers the vehicle’s interior. One antenna covers the interior of the Trunk.Two antennas in the Door Handles (Left side and Right side) cover the area around thedoors. One antenna in the rear bumper covers the area around the trunk for access tothe trunk.. Those antennas are based on ferrite core and have a pair of twisted coppercables from antenna to pin header.3.3. Transponder Antenna:Built in the Start Stop Button to communicate with the transponder by a basestation and using wireless communication :(134.2kHz)3.4. InstallationAll of antennas and ECU will be installed permanently by professional engineers and enduser is not allowed to make any modification.
3.4 Installation in vehicleThe Smart Key ECU is installed inside the vehicle.Fig. Outline of the SystemSmart Key FOBLF ANTDriver TransponderDriverSmart Key ECURFReceiverTP ANTRF ANT LF ANTInstallation in vehicleSmart Key ECUwithRF Internal AntennaRF Receiverand LF DriverDoor Handle withLF AntennaStart Stop Button withTransponder AntennaLF AntennaSmart Key FOBFig. Installation of the System
FCC WarningThis equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in aresidential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installedand 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 causeharmful interference to radio or television reception, which can be determined by turning the equipment off andon, 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.Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void yourauthority to operate this equipment.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.IC Warning"This device complies with Industry Canada licence-exempt RSS standard(s)."Operation is subject to the following conditions: (1) this device may not cause interference, and (2) this device mustaccept any interference, including interference that may cause undesired operation of the device.Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence.L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas provoquer de brouillage, et (2)l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'encompromettre le fonctionnement.

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