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L9680 Datasheet(PDF) 151 Page - STMicroelectronics

Part # L9680
Description  Automotive advanced airbag IC for mid/high end applications
PDF  277 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9680 Datasheet(HTML) 151 Page - STMicroelectronics

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DocID029257 Rev 1
151/277
L9680
SPI interfaces
276
Cleared by SSM_RESET or SPI read or when channel is commanded OFF
via SPI RSCTRL
updated when a valid PSI5 frame is received
Wheel speed configured channel (RSDR0, RSDR1, RSDR2, RSDR3)
CRC[2:0]
-
-
-
CRC based on bits [16:0]
Updated based on bits [16:0]
STDSTL
0
0
0 Standstill indication (valid only for VDA sensor or PWM 2 edges)
1 Standstill
0 Valid Sensor Signal
FLT
1
1
1 Fault Status - Depending on Fault Status, the DATA bits are defined differently
Cleared when all of the following bits are '0': STG, STB, CURRENT_HI,
OPENDET, RSTEMP, INVALID, PULSE OVERFLOW ERROR, NODATA
Set when any of the following bits are '1': STG, STB, CURRENT_HI,
OPENDET, RSTEMP, INVALID, PULSE OVERFLOW ERROR, NODATA
0 No Fault
1 Fault
Latch_D0
0
0
0 Logical Channel ID
0 no prior bit0 faults
1 prior message(s) contained bit0 fault
LCID[1:0]
Logical Channel ID
00 RSU0
01 RSU1
10 RSU2
11 RSU3
DATA[11:0] $000 $000 $000 12-bit data from wheel speed decoder
VDA Data Format
DATA [7:0] Counter bits
DATA [11:8] Counter bits
PWM Data Format
DATA [8:0] Pulse Data bits



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