L9680 datasheet(103/286 Pages) STMICROELECTRONICS

103 / 286 page

DS11615 Rev 7

103/286

L9680

SPI interfaces

285

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/pyroswitch driver full path test did not complete successfully

1 HS squib/pyroswitch 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/pyroswitch 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/pyroswitch 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/pyroswitch 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 ER cap ESR measure

0101 = Ch 5

0101 Squib/pyroswitch resistance range

CHECK

0110 = Ch 6

0110 Squib/pyroswitch resistance

measurement

0111 = Ch 7

0111 FET test

1000 = Ch 8

1000 - 1111 Unused

1001 = Ch 9

1010 = Ch A

1011 = Ch B

0100 - 1111 None Selected

L9680 Datenblatt(PDF) 103 Page - STMicroelectronics

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