TMC8462 Datasheet • Document Revision V1.4 • 2018-May -09
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6.4.9.4 Watchdog Status Process Data (0x0440:0x0441)
Bit
Description
ECAT
PDI
Reset Value
15:0
Watchdog Status of Process Data (triggered by r/-
SyncManagers)
r/
(w
0: Watchdog Process Data expired
1: Watchdog Process Data is active or disabled
ack)*
0
Reserved
r/-
r/
(w
ack)*
Table 53: Register 0x0440:0x0441 (WD Status PD)
* PDI register function acknowledge by Write command is disabled: Reading this register from PDI clears
AL Event Request 0x0220.6. Writing to this register from PDI is not possible.
PDI register function acknowledge by Write command is enabled: Writing this register from PDI clears AL
Event Request 0x0220.6. Writing to this register from PDI is possible; write value is ignored (write 0).
6.4.9.5 Watchdog Counter Process Data (0x0442)
Bit
Description
ECAT
PDI
Reset Value
7:0
Watchdog Counter Process Data (counting is r/
stopped when 0xFF is reached). Counts if Pro- w(clr)
cess Data Watchdog expires.
r/-
Table 54: Register 0x0442 (WD Counter PD)
Note
Watchdog Counters 0x0442
-0x0443 are cleared if one of the Watchdog Counters
0x0442-0x0443 is written. Write value is ignored (write 0).
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