Acpi (Advanced Configuration And Power Interface); Introduction; Acpi Sleep Status; Fast Resume - Compal JHT01 Service Manual

6. ACPI (Advanced Configuration and Power
Interface)
6.1

Introduction

The Advanced Configuration and Power Interface (ACPI) is a well-specified
power management and configuration mechanism. It evolves the existing
collection of power management codes, APM, PnP BIOS, and Etc.
6.2

ACPI Sleep Status

BIOS must support the following sleep states - S3, S4 and S5.
6.3

Fast Resume

BIOS must hands off the control to the operating system within the following
time limits:
S3->S0
*Measured using the Microsoft BootVis tool.
In addition, total resume time from S3 must be completed within 5 seconds.
6.4

Power State Transition Diagram

The state transition diagram in ACPI mode is as follows:
From (State)
S3
S4
S5
S0
Required
2 seconds
Leave By Condition
Power Button
On board LAN
Any key
Alarm
Critical low battery (Only in DC mode)
Power Button
On board LAN (Only in AC mode)
RTC (Only in AC mode)
Power Button
Press Lid switch (depends on ACPI OS setting)
Standby icon in shutdown menu in Windows.
ACPI OS timer expired
JHT01 Service Manual
Enter (State)
S0
S0
S0
S3
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