FIC a440 Manual Do Serviço
Software Functional Overview
3-26
FIC A440 Series Service Manual
3.5.5 Power
States
From a user-visible level, the system can be thought of as being one of the states in the
following diagram:
following diagram:
G3 -Mech
Off
Legacy
Wake
Event
C0
G0 (S0) -
Working
G1 -
Sleeping
S4
S3
S2
S1
Power
Failure
G2 (S5) -
Soft Off
D0
D1
D2
D3
Modem
D0
D1
D2
D3
HDD
D0
D1
D2
D3
CDROM
C1
C2
C3
CPU
C0
BIOS
Routine
3.5.6 Power States transition event
The following table summarizes the entry events and wake-up events of each power:
Power State
Entry Event
Wake up Event
S1
OSPM* control
Predefined Mem/IO range access
Ring Indicator
Keystroke
IRQ1-15
SMI# / ACPI SCI# / USB
Ring Indicator
Keystroke
IRQ1-15
SMI# / ACPI SCI# / USB
S2
OSPM control
Predefined Mem/IO range access
Battery Warning
Battery Low
Ring Indicator
Keystroke (Int., Ex. And USB keyboard)
Mouse movement
Schedule Alarm
SMI# / ACPI SCI# / USB
Battery Warning
Battery Low
Ring Indicator
Keystroke (Int., Ex. And USB keyboard)
Mouse movement
Schedule Alarm
SMI# / ACPI SCI# / USB