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L9679P Datasheet(PDF) 145 Page - STMicroelectronics

Part # L9679P
Description  Automotive advanced airbag IC for mid/high end applications
PDF  272 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9679P Datasheet(HTML) 145 Page - STMicroelectronics

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L9679P
SPI interfaces
271
7.4
Remote sensor SPI register map
The Remote Sensor SPI interface consists of twelve 32-bit read registers (one for each
logical channel) to allow for access to decoded sensor data and fault registers. The registers
are addressed by the read register ID and the Global ID bit.
The L9679P checks the validity of the received RID field in the MOSI_RS frame. Should a
SPI read command be received containing an unused RID address, the command will be
discarded and the ERR_RID bit will be flagged in the current GSW.
Table 8. Remote sensor SPI register map
GID
RID / WID
Hex R/W
Name
Description
Operating State
Init Diag Safing Scrap Arming
0
1
0
1
0
0
0
0
$50
R
RSDR0
Remote
sensor
data/status
registers
(PSI-5 or
WSS)
0
1
0
1
0
0
0
1
$51
R
RSDR1
0
1
010010
$52
0
1
010011
$53
0
1
0
1
0
1
0
0
$54
R
RSDR4
0
1
0
1
0
1
0
1
$55
R
RSDR5
0
1
010110
$56
0
1
010111
$57
0
1
0
1
1
0
0
0
$58
R
RSDR8
0
1
0
1
1
0
0
1
$59
R
RSDR9
0
1
011010
$5A
0
1
011011
$5B
0
1
0
1
1
1
0
0 $5C
R
RSTHR0_L
Remote
sensor
(PSI-5 or
WSS)
0
1
0
1
1
1
0
1 $5D
R
RSTHR1_L
0
1
0
1
1
1
1
0
$5E
R
RSTHR2_L
0
1
0
1
1
1
1
1
$5F
R
RSTHR3_L
0
1
100000
$60
0
1
100001
$61
0
1
100010
$62
0
1
100011
$63
0
1
1
0
1
0
1
0
$6A
R
ARM_STATE
Arming signals
status register
1
1
1
1
1
1
1
1
$FF
R
SAF_CC
Safing record
compare
complete
register



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