w83977ctf Winbond Electronics Corp America, w83977ctf Datasheet - Page 102

• Manufacturer Part Number: w83977ctf
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

9.0
W83977EF/CTF supports both ACPI and legacy power managements. The switch logic of the power
management block generates an SMI# interrupt in the legacy mode and an SCI# interrupt in the ACPI
mode. The new ACPI feature routes SMI#/SCI# logic output either to SMI# or toSCI#. The SMI#/SCI#
logic routes to SMI# only when both SCI_EN = 0 and SMISCI_OE = 1. Similarly, the SMI#/SCI# logic
routes to SCI# only when both SCI_EN = 1 and SMISCI_OE = 1.
ACPI REGISTERS FEATURES
IRQ events
Global STBY
Device Trap
Device Idle
Timers
Timer
SMI# /
SCI#
Logic
IRQs
-93 -
State machine
SCI_EN
Sleep/Wake
0
1
SMISCI_OE
SMISCI_OE
Publication Release Date: March 1999
W83977EF/ CTF
WAK_STS
Clock
Control
PRELIMINARY
SMI#
SCI#
Revision A1