Acer TravelMate P643-V, Service Manual

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1-38 Hardware Specifications and Configurations
System Power Management
System DMA Specification
Item Specification
Power management system ACPI 3.0-compliant
Power global states

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
this state.
Legacy Mode Power Management
DMA0 Free
DMA1 Free
DMA2 Free
DMA3 Free
DMA4 Direct memory access controller
DMA5 Free
DMA6 Free
DMA7 Free