User manual

ATHENA CPU User Manual V1.40 Page 67
19.2 Watchdog Timer Register Details
0x25C Write WDT Trigger Register
Bit No. 7 6 5 4 3 2 1 0
Name
WDTRIG
WDTRIG Writing a 1 to this bit triggers an immediate software reload of the WDT watchdog
timer.
0x25C Read WDT Trigger Register
This register does not read back.
0x25D Write WDT Counter Register
Bit No. 7 6 5 4 3 2 1 0
Name
WDT3 WDT2 WDT1 WDT0
WDT0-3 Writing to bits WDT0-3 loads WDT with the 4-bit counter value. Use this register to
set the WDT countdown period. Each tick takes 145ms, so you can set the period
between 145ms (1) and 2.175ms (15).
0x25D Read WDT Counter Register
This register does not read back.