L9679P datasheet(99/272 Pages) STMICROELECTRONICS

99 / 272 page

DocID029275 Rev 1

99/272

L9679P

SPI interfaces

271

0 FET is off during diagnostic

1 FET is on during diagnostic

HS_DRV_OK

0 FET Test Status

Updated by SSM_RESET or Loops diagnostic state machine or when driver

full path test is run test is run

0 HS squib driver full path test did not complete successfully

1 HS squib driver full path test complete successfully

HSR_HI

0 HSR Diagnostic - HIGH Range

Updated by SSM_RESET or Loops diagnostic state machine or when squib

resistance test is run

0 HSR measurement < HSR HIGH value

1 HSR measurement > HSR HIGH value

HSR_LO

0 HSR Diagnostic - Low Range

Updated by SSM_RESET or Loops diagnostic state machine or when squib

resistance test is run

1 HSR measurement< HSR LOW value

0 HSR measurement > HSR LOW value

RES_MEAS_CHSEL[3:0] 0000 0000 0000 Channel selected for

resistance measurement

HIGH_LEV_DIAG_SELECTED[3:0]

Updated by SSM_RESET or Loops diagnostic state machine or as

determined by squib resistance channel selected

0000 = Ch 0

0000 No diagnostic selected

0001 = Ch 1

0001 VRCM CHECK

0010 = Ch 2

0010 Leakage CHECK

0011 = Ch 3

0011 Short Between Loops CHECK

0100 = Ch 4

0100 Unused

0101 = Ch 5

0101Squib resistance range CHECK

0110 = Ch 6

0110 Squib resistance measurement

0111 = Ch 7

0111 FET test

0100 - 1111 None Selected

SBL

0 Short between loop state

Updated by SSM_RESET or Loops diagnostic state machine

0 Short between squib loops is not present

1 Short between squib loops is present

STG

0 Short to Ground Test Status

L9679P 数据表(PDF) 99 Page - STMicroelectronics

L9679P 数据表(HTML) 99 Page - STMicroelectronics

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