FIC a440 Service Manual
Software Functional Overview
3-24
FIC A440 Series Service Manual
3.5
3.5
3.5
3.5
ACPI
ACPI
ACPI
ACPI
This section provides the ACPI software function of the notebook.
3.5.1 General
Requirements
The BIOS must meet the following general Power Management requirements:
• Refers to the portion of the firmware that is compatible with the ACPI specifications.
• Support for Suspend-to-RAM (S3 state) and Suspend-to-Disk mode (S4 state).
• Support the Wake up event from Modem Ring in S3~S4 state. This is enabled by a
CMOS Setup option.
• Support the Wake up event from RTC Time/Date alarm in S3~S4 state. This is
enabled by a CMOS Setup option.
• Power Management must not substantially affect or degrade system performance.
• Power Management must be OS independent
3.5.2 System Power Plane
Power Group
Power Control Pin
Controlled Devices
B+ Nil
IMM,
(9V~12V)
+12V
PWRON
Inverter, AC97 codec, PCMCIA card
+3V
PWRON
VGA, PCMCIA, PCMCIA Slot 3V, DRAM, North
Cluster (DRAM I/F), MAX32443
Cluster (DRAM I/F), MAX32443
+3VS
SUSB#
Flash ROM, Audio, Clock Generator, TAG RAM
+5V
PWRON
PCMCIA Slot 5V VCC, M38867
+5VS
SUSB#
Super I/O, HDD, CD-ROM, USB, LPT Port, K/B,
Glide Pad, Ext. PS/2 Mouse, IR, FDD, Audio AMP
Glide Pad, Ext. PS/2 Mouse, IR, FDD, Audio AMP
+3V Always
Nil
UP (PIC16C62), Internal modem ring
3.5.3 Global System State Definitions
Global system states (Gx states) apply to the entire system and are visible to the user.
Following is a list of the system states:
G0/S0 - Working
In this state, devices (peripherals) are dynamically having their power state changed. The user
will be able to select (through some user interface) various performance/power characteristics
of the system to have the software optimize for performance or battery life. The system
responds to external events in real time. It is not safe to disassemble the machine in this state.
G1 - Sleeping
A state where the computer consumes a small amount of power, user mode threads are not
being executed, and the system appear to be off (from an end user’s perspective, the display is
off, etc.). Latency for returning to the Working state varies on the wakeup environment
selected prior to entry of this state (for example, should the system answer phone calls, etc.).
Work can be resumed without rebooting the OS because large elements of system context are
saved by the hardware, while the rest by the system software. It is not safe to disassemble the
machine in this state.
Following is a list of the system states:
G0/S0 - Working
In this state, devices (peripherals) are dynamically having their power state changed. The user
will be able to select (through some user interface) various performance/power characteristics
of the system to have the software optimize for performance or battery life. The system
responds to external events in real time. It is not safe to disassemble the machine in this state.
G1 - Sleeping
A state where the computer consumes a small amount of power, user mode threads are not
being executed, and the system appear to be off (from an end user’s perspective, the display is
off, etc.). Latency for returning to the Working state varies on the wakeup environment
selected prior to entry of this state (for example, should the system answer phone calls, etc.).
Work can be resumed without rebooting the OS because large elements of system context are
saved by the hardware, while the rest by the system software. It is not safe to disassemble the
machine in this state.