AXIOMTEK AX12270, User Manual

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AX12270 PC/104 Module Series User’s Manual
58 Watchdog Timer
Using the Watchdog Function
Start
↓
Un-Lock WDT :
O 2E 87 ; Un-lock super I/O
O 2E 87 ; Un-lock super I/O
↓
Select Logic device :
O 2E 07
O 2F 08
↓
Set WDT Funtion :
O 2E 29
O 2F 20
↓
Set Second or Minute :
O 2E F3
O 2F N =00 or 04(See below table)
↓
Set base timer :
O 2E F4
O 2F M=00,01,02,…FF(Hex) ,Value=0 to 255
↓
IF No re-set timer : WDT time-out, generate RESET
IF to disable WDT :
O 2E 30
O 2F 00 ; Can be disable at any time
Activate WDT :
O 2E 30
O 2F 01