SAM3XA WDT
Watchdog Timer (WDT) User Interface
Registers
Address | Register | Name | Access | Reset |
---|---|---|---|---|
0x400E1A50 | Control Register | WDT_CR | write-only | - |
0x400E1A54 | Mode Register | WDT_MR | read-write | 0x3FFF2FFF |
0x400E1A58 | Status Register | WDT_SR | read-only | 0x00000000 |
Register Fields
WDT Control Register
Name: WDT_CR
Access: write-only
Address: 0x400E1A50
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 |
KEY | |||||||
23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
- | - | - | - | - | - | - | - |
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
- | - | - | - | - | - | - | - |
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
- | - | - | - | - | - | - | WDRSTT |
- WDRSTT: Watchdog Restart
Value Name Description 0 - No effect. 1 - Restarts the Watchdog. - KEY: Password
-
WDT Mode Register
Name: WDT_MR
Access: read-write
Address: 0x400E1A54
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 |
- | - | WDIDLEHLT | WDDBGHLT | WDD | |||
23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
WDD | |||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
WDDIS | WDRPROC | WDRSTEN | WDFIEN | WDV | |||
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
WDV |
- WDV: Watchdog Counter Value
- WDFIEN: Watchdog Fault Interrupt Enable
Value Name Description 0 - A Watchdog fault (underflow or error) has no effect on interrupt. 1 - A Watchdog fault (underflow or error) asserts interrupt. - WDRSTEN: Watchdog Reset Enable
Value Name Description 0 - A Watchdog fault (underflow or error) has no effect on the resets. 1 - A Watchdog fault (underflow or error) triggers a Watchdog reset. - WDRPROC: Watchdog Reset Processor
Value Name Description 0 - If WDRSTEN is 1, a Watchdog fault (underflow or error) activates all resets. 1 - If WDRSTEN is 1, a Watchdog fault (underflow or error) activates the processor reset. - WDDIS: Watchdog Disable
Value Name Description 0 - Enables the Watchdog Timer. 1 - Disables the Watchdog Timer. - WDD: Watchdog Delta Value
- WDDBGHLT: Watchdog Debug Halt
Value Name Description 0 - The Watchdog runs when the processor is in debug state. 1 - The Watchdog stops when the processor is in debug state. - WDIDLEHLT: Watchdog Idle Halt
Value Name Description 0 - The Watchdog runs when the system is in idle mode. 1 - The Watchdog stops when the system is in idle state.
-
-
WDT Status Register
Name: WDT_SR
Access: read-only
Address: 0x400E1A58
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 |
- | - | - | - | - | - | - | - |
23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
- | - | - | - | - | - | - | - |
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
- | - | - | - | - | - | - | - |
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
- | - | - | - | - | - | WDERR | WDUNF |
- WDUNF: Watchdog Underflow
Value Name Description 0 - No Watchdog underflow occurred since the last read of WDT_SR. 1 - At least one Watchdog underflow occurred since the last read of WDT_SR. - WDERR: Watchdog Error
Value Name Description 0 - No Watchdog error occurred since the last read of WDT_SR. 1 - At least one Watchdog error occurred since the last read of WDT_SR.