w83627sf Winbond Electronics Corp America, w83627sf Datasheet - Page 128

• Manufacturer Part Number: w83627sf
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

CRF5 (PLED mode register. Default 0x00)
CRF6 (Default 0x00 if ENGMTO is 0, 0x0A if ENGMTO is 1)
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.
note: The corresponding power on setting pin is pin 81 and its value is latched on the rising edge of
PWROK.
Bit 7-6
Bit 5-4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7 - 0 = 0x00 Time-out Disable
1: CRF6 is initialized to be 0x0A and CR30 of this logical device is initialized to be 0x01.
0: CRF6 is initialized to be 0x00 and CR30 of this logical device is initialized to be 0x00.
: 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
: Enable the keyboard Reset output Low pluse when Time-out.
= 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
Disable
Enable
second
minute
Power LED pin is tri-stated.
Power LED pin is drived low.
Power LED pin is a 1/4Hz toggle pulse with 50 duty cycle.
Power LED pin is a 1Hz toggle pulse with 50 duty cycle.
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Publication Release Date: Nov. 2000
PRELIMINARY
W83627SF
Revision 0.60