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L9679ETR датащи(PDF) 46 Page - STMicroelectronics

номер детали L9679ETR
подробное описание детали  Automotive battery cut-off circuit and airbag system expansion IC
PDF  127 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9679ETR датащи(HTML) 46 Page - STMicroelectronics

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 46 / 127 page
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[13]
0
0
0
HSR_HI: 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
[12]
0
0
0
HSR_LO: 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
[11:8]
0000
0000
0000
RES_MEAS_CHSEL/HIGH_LEV_DIAG_SELECTED: Channel selected for resistance
measurement
Updated by SSM_RESET or Loops diagnostic state machine or as determined by squib/
pyroswitch resistance channel selected
RES_MEAS_CHSEL[3:0]
0000: Ch 0
0001: Ch 1
0010: Ch 2
0011: Ch 3
0100: Ch 4
0101: Ch 5
0110: Ch 6
0111: Ch 7
0100 - 1111: None Selected
HIGH_LEV_DIAG_SELECTED[3:0]
0000: No diagnostic selected
0001: VRCM CHECK
0010: Leakage CHECK
0011: Short Between Loops CHECK
0100: Unused
0101: Squib/Pyroswitch resistance range CHECK
0110: Squib/Pyroswitch resistance measurement
0111: FET test
0100 - 1111: Unused
[7]
0
0
0
SBL: Short between loop state
Updated by SSM_RESET or Loops diagnostic state machine
0: Short between squib/pyroswitch loops is not present
1: Short between squib/pyroswitch loops is present
[6]
0
0
0
STG: Short to Ground Test Status
Updated by SSM_RESET or Loops diagnostic state machine or as determined by squib/
pyroswitch leakage diagnostic
0: STG not detected
1: STG detected
[5]
0
0
0
STB: Short to Battery Test Status
Updated by SSM_RESET or Loops diagnostic state machine or as determined by squib/
pyroswitch leakage diagnostic
0: STB not detected
1: STB detected
L9679E
SPI interface
DS12485 - Rev 8
page 46/127



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