W83977EG Datasheet, PDF (107/142 Pages) Winbond – WINBOND ISA I/O

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