TLE7729TXUMA1
TLE7729TXUMA1 Datasheet
TLE 7729
| Part | Datasheet |
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TLE7729TXUMA1 |
TLE7729TXUMA1 (pdf) |
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| TLE 7729 4 Channel Airbag Satellite Receiver IC SatRICTM T h e T L E 7 2 9 SatRICTM - is a highly integrated interface IC specially designed for automotive restraint applications. The device, located in the ECU Electronic Control Unit of the airbag system, is able to receive data from different types of intelligent sensors like inertia and pressure sensor satellites for front-, side-, or rear-crash sensor applications. It provides a pre-regulated power supply voltage to the satellites over a twisted pair of wires. The satellite module transmits digital data to TLE 7729 by modulating the line current. Applications • Automotive Restraint Applications Embedded Diagnostic Functions • Leakage detection to GND and Battery • Ground loss detection • Short to GND and open detection at every reference pins IREF 23 VSYNC12 VSYNC34 VBUS12 Power Supply & Control VSYNCxy VBUSCxy VBUS34 14 22 SATREF12 20 SATREF34 Features • 4 independent satellite receiver channels for current modulated data • Each channel can support up to two satellites with a total of up to eight sensors • Data rate 125 kBaud • Support of 11-, 13-, 18-Bit Manchester 1 or 2 encoded messages • Channel configuration in pairs Bus Mode, Protocol Type • Supply of satellite channels via 4 independent voltage regulators • Adjustable current level detection thresholds • Asynchronous and synchronous data transmission modes • All digital I/Os are V and 5 V compatible • 4 Digital outputs for voltage-converted received satellite signals • 16-bit 8 MHz Serial Peripheral Interface SPI • Embedded protocol handler for data preprocessing • Small P-TSSOP-28 Package SATFD1 27 Sense & Control SATFD1 - Driver 6 V/11 V Logic 24 RIN Protocol Handler & Control Logic 8 CLK 18 SATSYNC 11 RxD3 4 RxD2 25 RxD1 Data Control SATFD2 2 SATFD3 13 SATFD4 16 SATFD 2 - Driver SATFD 3 - Driver SATFD 4 - Driver 9 MOSI SPI Interface 5 MISO 19 CS 10 SCK TLE 7729 AGND DGND N.C. N.C. 3 N.C. 12 TEST Start Bits Sensor Status Ordering No. B112-H8941-X-X-7600 Printed in Germany PS nb |
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