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FS6500 bảng dữ liệu(PDF) 44 Page - NXP Semiconductors

tên linh kiện FS6500
Giải thích chi tiết về linh kiện  Safety power system basis chip with CAN FD and LIN transceivers
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FS6500 bảng dữ liệu(HTML) 44 Page - NXP Semiconductors

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NXP Semiconductors
FS6500-FS4500-ASILD
Safety power system basis chip with CAN FD and LIN transceivers
aaa-037749
Watchdog Error Counter
WD_CNT_ERR = 6
Watchdog Error Counter
WD_CNT_ERR = 4
Watchdog Error Counter
WD_CNT_ERR = 2
0
1
2
0
1
2
3
4
WD refresh
NOK
WD refresh OK
WD refresh OK
WD refresh OK
WD refresh OK
WD refresh OK
WD refresh OK
WD refresh OK
WD refresh OK
WD refresh NOK
WD refresh
NOK
WD refresh
NOK
0
1
2
3
4
5
6
WD refresh NOK
WD refresh
NOK
WD refresh
NOK
WD refresh
NOK
WD refresh
NOK
WD refresh
NOK
WD refresh
NOK
Figure 20. Watchdog error counter configuration (INIT_WD_CNT register, Bits WD_CNT_ERR_1:0)
12.5.2.6 Watchdog refresh counter
The watchdog refresh counter is used to decrement the fault error counter. Each time the watchdog is properly
refreshed, the watchdog refresh counter is incremented by ’1’. Each time the watchdog refresh counter
reaches ’6’ and if next WD refresh is also good, the fault error counter is decremented by ’1’ (case with
WD_CNT_RFR_1:0 configured at 6).
Whatever the position the watchdog refresh counter is in, each time there is a wrong refresh watchdog,
the watchdog refresh counter is reset to ’0’. To allow flexibility in the application, the maximum value of this
watchdog refresh counter is configurable in the INIT_WD_CNT register, but only when device is in INIT_FS
mode.
FS6500-FS4500-ASILD
All information provided in this document is subject to legal disclaimers.
© 2024 NXP B.V. All rights reserved.
Product data sheet
Rev. 8 — 5 August 2024
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