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L9300 데이터시트(PDF) 126 Page - STMicroelectronics

부품명 L9300
상세설명  Automotive flexible U-chip for braking and transmission
PDF  178 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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L9300 데이터시트(HTML) 126 Page - STMicroelectronics

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16.3.4
Q&A watchdog registers
Table 60. Q&A watchdog registers address mapping
Register description
Register name
Q&A Seed/Answer
WDG2SEEDANS
Q&A Status
WDG2STATUS
Q&A Answer Timing
WDG2ANSTMG
Q&A Request Timing
WDG2RQTMG
Q&A Configuration
WDG2PGM
Q&A Write Unlock
WDG2UNLOCK
WDG2SEEDANS
Q&A Seed/Answer
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
RW
RW
Address:
GLOBAL_BaseAddress + 0xE
Type:
RW
Reset:
0b0000 0000 0000 0000 0000 0000
Description:
Register behaves differently when read or written.
It contains seed value sent to the micro to be used for Answer elaboration in read mode.
It contains Answer word in write mode
[19:16] unused
If Bit 31 = 0 ==> Read operation
[15:8] unused
[7:0] Seed: Current value of the seed sent to the microcontroller to be used for the Answer elaboration
Reset events: VB_UV, GND_LOSS, POR
If Bit 31 = 1 ==> Write operation
[15:8] Answer HIGH: Higher part of the answer obtained as described on Section 14: Q&A Watchdog
Reset events: VB_UV, GND_LOSS, POR
[7:0] Answer LOW: Lower part of the answer obtained as described on Section 14: Q&A Watchdog
Reset events: VB_UV, GND_LOSS, POR
L9300
SPI interface and register mapping
DS12258 - Rev 5
page 126/178



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