Acer TravelMate 6495T Service Manual page 46

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Table of Contents

System Power Management

Power management system

Power global states

System DMA Specification

ACPI 3.0-compliant

G3 Mechanical Off - This off state is entered through a

mechanical means; no electrical current is running through

the circuitry and it can be worked on without damaging the

hardware or endangering service personnel. Except for the

real-time clock, power consumption is zero.

G2/S5 Soft Off - OS initiated shutdown. The computer

consumes a minimal amount of power. No user mode or

system mode code is run. It is not safe to disassemble the

machine in this state.

G1 Sleeping - The computer consumes a small amount of

power, user mode threads are not being executed, and the

system "appears" to be off. It is not safe to disassemble the

machine in this state

G0 Working - The computer dispatches user mode

(application) threads and they execute. It is not safe to

disassemble the machine in this state.

S4 Non-Volatile Sleep - Also known as hibernation state. A

special global system state that allows system context to be

saved and restored (relatively slowly) when power is lost to

the mainboard. It is not safe to disassemble the machine in

Power Management

Direct memory access controller

Hardware Specifications and Configurations

Specification