Block Diagram

FCC ID: GQ4-38R

Block Diagram

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FCCID_817694

TRW Automotive June 8, 2007 OSS Electronics 24175 Research Dr. Farmington Hills, MI 48335-2642 Tel 248.478.7210 Fax 248.478.7241 RE: Certification for Honda MY08 TPM Baseline Receiver Model #: 218143-108 218143-109 218143-110 FCC ID: GQ4-38R Canada IC: 1470A-10R PRINCIPLES OF CIRCUIT OPERATION The receiver contains a microprocessor and firmware that control the entire TPM system. With the ignition in the on/run position, the receiver will monitor, demodulate and decode transmission at 315MHz, sent from the wheel-mounted pressure sensors. Tire pressure problems are reported to the driver via light emitting diodes on the dashboard. A separate system will illuminate the LED’s. Tire information is sent to this separate system using a high speed CAN bus. Pulse Demodulator Ant Match LNA SAW Filter RF Receiver Detector Circuit 10.178125MHz Crystal RF Data K-Line Batt + Protection Circuit GND Voltage Micro Controller Regulator Signal IGN Conditioning; Input Buffer CAN 10MHz EEPROM Crystal Figure 3. TPM Baseline Receiver Block Diagram


Document Created: 2007-07-17 00:08:41
Document Modified: 2007-07-17 00:08:41
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