w83637hg Winbond Electronics Corp America, w83637hg Datasheet - Page 121

• Manufacturer Part Number: w83637hg
• Description: Winbond Lpc I/o Lpc I/o
• Manufacturer: Winbond Electronics Corp America

CRF3 (Default 0x00)
CRF4 (Reserved)
CRF5 (PLED mode register. Default 0x00)
CRF6 (Default 0x00)
Watch Dog Timer Time-out value. Writing a non-zero value to this register causes the counter to load
the value to Watch Dog Counter and start counting down. If the Bit 7 and Bit 6 are set, any Mouse
Interrupt or Keyboard Interrupt event will also cause the reload of previously-loaded non-zero value to
Watch Dog Counter and start counting down. Reading this register returns current value in Watch Dog
Counter instead of Watch Dog Timer Time-out value.
Bit 7 - 4 : These bits select IRQ resource for IRQIN1.
Bit 3 - 0 : These bits select IRQ resource for IRQIN0.
Bit 7-6
Bit 5-4
Bit 3
Bit 2
Bit 1-0
Bit 7 - 0 = 0x00 Time-out Disable
: select PLED mode
= 00
= 01
= 10
= 11
: Reserved
: select WDTO count mode.
= 0
= 1
: Enable the rising edge of keyboard Reset(P20) to force Time-out event.
= 0
= 1
: Reserved
= 0x01 Time-out occurs after 1 second/minute
= 0x02 Time-out occurs after 2 second/minutes
= 0x03 Time-out occurs after 3 second/minutes
................................................
= 0xFF Time-out occurs after 255 second/minutes
Disable
Enable
Second
Minute
Power LED pin is tri-stated.
Power LED pin is driven low.
Power LED pin is a 1Hz toggle pulse with 50 duty cycle
Power LED pin is a 1/4Hz toggle pulse with 50 duty cycle.
- 116 -
Publication Release Date: March, 2006
W83637HF/HG
Revision 1.6