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X T X C P U M o d u l e
X T X - U 1 5 B
Appendix A Programming the Watchdog Timer
A-2
A.1 Programming
XTX-U15B utilizes SCH3114-NU chipset as its watchdog timer
controller.
The SCH311X WDT ( Watch Dog Timer ) has a programmable
time-out ranging from 1 to 255 minutes with one minute resolution,
or 1 to 255 second resolution. The unit of the WDT timeout value
are selected via bit[7] of the WDT_TIMEOUT register. The WDT
time-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 the
WDT to reload and begin counting down from the value loaded.
When the WDT count value reaches zero the counter stops and
sets the Watchdog time-out status bit in the WDT_CTRL Runtime
register. Note: Regardless of the current state of the WDT, the WDT
time-out status bit can be directly set or cleared by the Host CPU.
The related register for configuring WDT is list as follows:
Содержание XTX-U15B
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Страница 45: ...XTX CPU Module X T X U 1 5 B Appendix C Running the Path File C 1 Running Appendix C The Path File...
Страница 47: ...XTX CPU Module X T X U 1 5 B Appendix C Running the Path File C 3 Finish XIO2001 reg Shut Down the Windows XPE...