Compal NBLB2 - ACPI (Advanced Configuration and Power Interface)

NBLB2 Service Manual
13
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:
Required
S3->S0
2seconds
*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)
Leave By Condition
Enter (State)
S3
Power Button
S0
On board LAN
Any key
Alarm
Critical low battery(Only in DC mode)
S4
Power Button
S0
On board LAN (Only in AC mode)
RTC(Only in AC mode)
S5
Power Button
S0
S0
Press Lid switch (depends on ACPI
OS setting)
S3
Standby icon in shutdown menu in
Windows.
ACPI OS timer expired
Critical low battery (depends on
ACPI OS setting)
S0
Press Lid switch (depends on ACPI
OS setting)
S4
Press Power Button (depends on
ACPI OS setting)
S0
Press Lid switch (depends on ACPI
OS setting)
S5