W83627DHG Datasheet, PDF (209/268 Pages) Winbond – WINBOND LPC I/O

W83627DHG
CR F6h. (WDTO# Counter Register; Default 00h)
BIT READ / WRITE
DESCRIPTION
Watch Dog Timer Time-out value. Writing a non-zero value to this
register causes the counter to load the value into the Watch Dog
Counter and start counting down. If CR F7h, bits 7 and 6 are set,
any Mouse Interrupt or Keyboard Interrupt event causes the
previously-loaded, non-zero value to be reloaded to the Watch Dog
Counter and the count down resumes. Reading this register returns
the current value in the Watch Dog Counter, not the Watch Dog Timer
7~0
R/W
Time-out value.
00h: Time-out Disable
01h: Time-out occurs after 1 second/minute
02h: Time-out occurs after 2 second/minutes
03h: Time-out occurs after 3 second/minutes
……………………….......................................
FFh: Time-out occurs after 255 second/minutes
CR F7h. (WDTO# Control & Status Register; Default 00h)
BIT READ / WRITE
DESCRIPTION
Mouse interrupt reset enables watch-dog timer reload
7
R/W
0: Watchdog timer is not affected by mouse interrupt.
1: Watchdog timer is reset by mouse interrupt.
Keyboard interrupt reset enables watch-dog timer reload
6
R/W
0: Watchdog timer is not affected by keyboard interrupt.
1: Watchdog timer is reset by keyboard interrupt.
5 Write “1” Only Trigger WDTO# event. This bit is self-clearing.
4
R/W
WDTO# status bit
0: Watchdog timer is running.
Write “0” Clear
1: Watchdog timer issues time-out event.
3~0
R/W
These bits select the IRQ resource for the WDTO#. (02h for SMI# event.)
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Publication Release Date: Aug, 22, 2007
Version 1.4