w83977eg Winbond Electronics Corp America, w83977eg Datasheet - Page 107

• Manufacturer Part Number: w83977eg
• Description: Winbond Isa I/o W83977ef W83977eg
• Manufacturer: Winbond Electronics Corp America

*Note: 1). Internal logic provides an 1us Debounce Filter to reject the width of P20 pulse less than 1us.
then connect to set the Bit 0(Watch Dog Timer Status). The ORed signal is self-clearing.
12.9 Logical Device A (ACPI)
CR30 (Default 0x00)
CR70 (Default 0x00)
CRE0 (Default 0x00)
Bit 3: Enable the rising edge of Keyboard Reset(P20) to force Time-out event, R/W*
Bit 2: Force Watch Dog Timer Time-out, Write only*
Bit 1: Enable Power LED toggle pulse with 50% duty cycle , R/W
Bit 0: Watch Dog Timer Status, R/W
Bit 7 - 1: Reserved.
Bit 0: = 1 Activates the logical device.
Bit 7 - 4: Reserved.
Bit 3 - 0: These bits select IRQ resources for SCI#.
Bit 7: DIS-PANSWIN. Disable panel switch input to turn system power supply on.
Bit 6: ENKBWAKEUP. Enable Keyboard to Wake-Up system via PANSWOUT#.
Bit 5: ENMSWAKEUP. Enable Mouse to Wake-Up system via PANSWOUT#.
Bit 4: MSRKEY. Select Mouse Left/Right Botton to Wake-Up system via PANSWOUT#.
2). The P20 signal that coming from Debounce Filter is ORed with the signal generated by the Force Time-out bit and
= 01 Power LED toggle pulse frequency is 1/2Hz
= 10 Power LED toggle pulse frequency is 1/4Hz
= 11 Power LED toggle pulse frequency is 1/8Hz
= 1 Enable
= 0 Disable
= 1 Force Watch Dog Timer time-out event; this bit is self-clearing.
= 1 Enable
= 0 Disable
= 1 Watch Dog Timer time-out occurred.
= 0 Watch Dog Timer counting
= 0 Logical device is inactive.
= 0
= 1
= 0
= 1
= 0
= 1
= 0
PANSWIN# is wire-ANDed and connected to PANSWOUT#.
PANSWIN# is blocked and can not affect PANSWOUT#.
Disable Keyboard Wake-Up function.
Enable Keyboard Wake-Up function.
Disable Mouse Wake-Up function.
Enable Mouse Wake-Up function.
Select click on Mouse Left-botton to Wake the system up.
W83977EF-AW/W83977EG-AW
-105-
Publication Release Date: Apr. 2006
Revision 1.2