Product specifications

VT8237R Data Sheet
Revision 2.06 December 15, 2004 -164- Functional Descriptions
FUNCTIONAL DESCRIPTIONS
Power Management
Power Management Subsystem Overview
The power management function of the VT8237R is indicated
in the following block diagram:
THRM#
Power
Plane and
System
Control
GP0
(Global
Standby)
Timer
PWRBTN#
RI#
SMI Arbiter
Sleep/Wake
State
Machine
SMI#
SCI#
- Legacy Only Event Logic
- ACPI / Legacy Event Logic
- ACPI Only Event Logic
- SMI Events
- SCI/SMI Events
Dec
0
1
CPU
STPCLK#
and ClkGen
Control
GP1
(Device
Idle)
Timer
User
Interface
Hardware
Events
RTC
SCI_EN
- ACPI / Legacy Generic Control Features
- ACPI / Legacy Fixed Control Features
- Wake-up Events
PM Timer
SCI Arbiter
Bus
Master
SLPBTN#
Primary
Events
USB resume
LID
GPIO
Hardware
Monitoring
Figure 5. Power Management Subsystem Block Diagram
Refer to ACPI Specification v2.0 and APM specification v1.2
for additional information.