L9678P datasheet(3/203 Pages) STMICROELECTRONICS

Part #	L9678P

Description	Automotive user configurable airbag IC

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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3 / 203 page

DocID029274 Rev 3

3/203

L9678P, L9678P-S

Contents

6

5.1.4

SPI Sleep command register (SPI_SLEEP) . . . . . . . . . . . . . . . . . . . . . 56

5.1.5

System status register (SYS_STATE) . . . . . . . . . . . . . . . . . . . . . . . . . . 57

5.1.6

Power state register (POWER_STATE) . . . . . . . . . . . . . . . . . . . . . . . . . 58

5.1.7

Deployment configuration registers (DCR_x) . . . . . . . . . . . . . . . . . . . . 61

5.1.8

Deployment command (DEPCOM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

5.1.9

Deployment configuration registers (DSR_x) . . . . . . . . . . . . . . . . . . . . 64

5.1.10

Deployment current monitor status registers (DCMTSxy) . . . . . . . . . . . 65

5.1.11

Deploy enable register (SPIDEPEN) . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

5.1.12

Squib ground loss register (LP_GNDLOSS) . . . . . . . . . . . . . . . . . . . . . 66

5.1.13

Device version register (VERSION_ID) . . . . . . . . . . . . . . . . . . . . . . . . . 67

5.1.14

Watchdog retry configuration register (WD_RETRY_CONF) . . . . . . . . 67

5.1.15

Watchdog timer configuration register (WDTCR) . . . . . . . . . . . . . . . . . 68

5.1.16

WD1 timer control register (WD1T) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

5.1.17

WD1 state register (WDSTATE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

5.1.18

Clock configuration register (CLK_CONF) . . . . . . . . . . . . . . . . . . . . . . . 70

5.1.19

Scrap state entry command register (SCRAP_STATE) . . . . . . . . . . . . . 71

5.1.20

Safing state entry command register (SAFING_STATE) . . . . . . . . . . . . 71

5.1.21

WD1 test command register (WD1_TEST) . . . . . . . . . . . . . . . . . . . . . . 72

5.1.22

System diagnostic register (SYSDIAGREQ) . . . . . . . . . . . . . . . . . . . . . 72

5.1.23

Diagnostic result register for deployment loops (LPDIAGSTAT) . . . . . . 74

5.1.24

Loops diagnostic configuration command register for low level



diagnostic (LPDIAGREQ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

5.1.25

Loops diagnostic configuration command register for high level



diagnostic (LPDIAGREQ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

5.1.26

DC sensor diagnostic configuration command register (SWCTRL) . . . . 81

5.1.27

ADC request and data registers (DIAGCTRL_x) . . . . . . . . . . . . . . . . . . 82

5.1.28

GPO configuration register (GPOCR) . . . . . . . . . . . . . . . . . . . . . . . . . . 85

5.1.29

GPO configuration register (GPOCTRLx) . . . . . . . . . . . . . . . . . . . . . . . 86

5.1.30

GPO fault status register (GPOFLTSR) . . . . . . . . . . . . . . . . . . . . . . . . . 87

5.1.31

ISO fault status register (ISOFLTSR) . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

5.1.32

Remote sensor configuration register (RSCRx) . . . . . . . . . . . . . . . . . . 89

5.1.33

Remote sensor control register (RSCTRL) . . . . . . . . . . . . . . . . . . . . . . 90

5.1.34

Remote sensor data/fault registers w/o fault (RSDRx) . . . . . . . . . . . . . 91

5.1.35

Safing algorithm configuration register (SAF_ALGO_CONF) . . . . . . . . 95

5.1.36

Arming signals register (ARM_STATE) . . . . . . . . . . . . . . . . . . . . . . . . . 96

5.1.37

ARMx assignment registers (LOOP_MATRIX_ARMx) . . . . . . . . . . . . . 97

5.1.38

ARMx pulse stretch registers (AEPSTS_ARMx) . . . . . . . . . . . . . . . . . . 98

5.1.39

Safing records enable register (SAF_ENABLE) . . . . . . . . . . . . . . . . . . 99

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