Advantech MIC-3399 User Manual page 96

6u compactpci blade sbc with 6th gen. intel core i3/i5/i7 processor and optional ecc memory
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Watchdog Timer Programming Procedure
To program the watchdog timer, users must execute a program that writes a value to
the I/ O port address 943/944 (hex) to enable/disable. This output value represents
the time interval. The value range is from 01 (hex) to FF (hex), and the related time
interval is
1 to 255 seconds.
Data
Time Interval
01
02
03
04
...
3F
63 sec
The countdown starts by writing a value to LPC address 0x943. The countdown can
be stopped by reading 0x944. To refresh the counter, only a value has to be written
again to 0x943. If the counter expires, the watchdog is reset and the state machine
goes back to IDLE state.
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