SPRUJC6A December 2024 – July 2025 AM2752-Q1 , AM2754-Q1
Watchdog Status Register
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| Instance Name | Physical Address |
|---|---|
| SMS0_RTI_1 | 4393 5098h |
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 |
| RESERVED | |||||||
| NONE | |||||||
| 0h | |||||||
| 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
| RESERVED | |||||||
| NONE | |||||||
| 0h | |||||||
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
| RESERVED | |||||||
| NONE | |||||||
| 0h | |||||||
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| RESERVED | DWWD | END | START | KEYST | DWDST | AWDST | |
| NONE | R/W1TC | R/W1TC | R/W1TC | R/W1TC | R/W1TC | R/W1TC | |
| 0h | 0h | 0h | 0h | 0h | 0h | 0h | |
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 31:6 | RESERVED | NONE | 0h | Reserved |
| 5 | DWWD | R/W1TC | 0h | This bit denotes whether the time-window defined by the windowed watchdog configuration has been violated, or if a wrong key or key sequence was written to service the watchdog. User and priviledge mode (read): 0 = no time-window violation has occurred. 1 = a time-window violation has occurred. The watchdog will generate either a system reset or a non-maskable interrupt to the CPU in this case. Priviledge mode (write): 0 = leaves the current value unchanged. 1 = clears the bit to 0. This will also clear all other status flags in the RTIWDSTATUS reg- ister except for the AWD ST flag. Clearing of the status flags will deassert the non- maskable interrupt generated due to violation of the DWWD. Reset Source: sms_custom_rst_mod_g_rst_n |
| 4 | END | R/W1TC | 0h | This bit denotes whether the end-time defined by the windowed watchdog configuration has been violated. This bit is effectively a copy of the DWD ST status flag. User and priviledge mode (read): 0 = no end-time window violation has occurred. 1 = the end-time defined by the windowed watchdog configuration has been violated. Priviledge mode (write): 0 = leaves the current value unchanged. 1 = clears the bit to 0. Reset Source: sms_custom_rst_mod_g_rst_n |
| 3 | START | R/W1TC | 0h | This bit denotes whether the start-time defined by the windowed watchdog configuration has been violated. This indicates that the WWD was serviced before the service window was opened. User and priviledge mode (read): 0 = no start-time window violation has occurred. 1 = the start-time defined by the windowed watchdog configuration has been violated. Priviledge mode (write): 0 = leaves the current value unchanged. 1 = clears the bit to 0. Reset Source: sms_custom_rst_mod_g_rst_n |
| 2 | KEYST | R/W1TC | 0h | This bit denotes a reset generated by a wrong key or a wrong key-sequence written to the RTIWDKEY register. User and priviledge mode (read): 0 = no wrong key or key-sequence written 1 = wrong key or key-sequence written to RTIWDKEY register Priviledge mode (write): 0 = leaves the current value unchanged 1 = clears the bit to 0 Reset Source: sms_custom_rst_mod_g_rst_n |
| 1 | DWDST | R/W1TC | 0h | status flag and is maintained for compatibility reasons. User and priviledge mode (read): 0 = DWD timeout period not expired 1 = DWD timeout period has expired Priviledge mode (write): 0 = leaves the current value unchanged 1 = clears the bit to 0 Reset Source: sms_custom_rst_mod_g_rst_n |
| 0 | AWDST | R/W1TC | 0h | User and priviledge mode (read): 0 = AWD pin 0 > 1 threshold not exceeded 1 = AWD pin 0 > 1 threshold exceeded Priviledge mode (write): 0 = leaves the current value unchanged 1 = clears the bit to 0 Reset Source: sms_custom_rst_mod_g_rst_n |