Aaeon PFM-540I Manual
Also see for PFM-540I: User manual
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Contents
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P C / 1 0 4 C P U M o d u l e P F M - 5 4 0 I R e v . BAppendix A Programming the Watchdog Timer A-2A.1 ProgrammingPFM-540I Rev.B utilizes SCH3114-NU chipset as its watchdogtimer controller.The SCH311X WDT ( Watch Dog Timer ) has a programmabletime-out ranging from 1 to 255 minutes with one minute resolution,or 1 to 255 second resolution. The unit of the WDT timeout valueare selected via bit[7] of the WDT_TIMEOUT register. The WDTtime-out value is set through the WDT_VAL Runtime register.Setting The WDT_VAL register to 0x00 disables the WDT function(this is its power on default).Setting the WDT_VAL to any other non-zero value will cause theWDT to reload and begin counting down from the value loaded.When the WDT count value reaches zero the counter stops andsets the Watchdog time-out status bit in the WDT_CTRL Runtimeregister. Note: Regardless of the current state of the WDT, the WDTtime-out status bit can be directly set or cleared by the Host CPU.The related register for configuring WDT is list as follows: |
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