User Guide

Software Functional Overview
3-20 FIC M785 Service Manual
3.5.5 Power Management Mode 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
Lid Close
Power Button
Ring Indicator
Battery Low - Low
RTC Alarm
LAN Wake Up
S4 OSPM control,
STD hot key pressed
Lid Close
Battery Low – Low
Power Button
RTC Alarm
S5 Power Button
Execute Windows shutdown
command
Power Button
RTC Alarm
3.5.6 Lid Switch
The function of Lid Switch is depends on the ACPI aware OS
3.5.7 Power button and suspend button
The function of Lid Switch is depends on the ACPI aware OS.
3.5.8 Device Power management
l Power state of local devices table
PowerState
Component
Doze Stand By STR STD/SOff
CPU Stop
Grant
Stop Clock Power Off Power Off
L2 CACHE ON Power Down Power Off Power Off
SISM650 ON Stop Clock Power Off (except
Vcc)
Power Off
SIS962 ON ON Power Off (except
SUSVcc, RTCVcc )
Power Off (except
SUSVcc, RTCVcc)
DRAM ON Self Refresh Self Refresh Power Off
Clock Synthesizer ON Low Power Power Off Power Off
CDROM ON Power Down Power Off Power Off
HDD ON Power Down Power Off Power Off
FDD (M785 None) ON Power Down Power Off Power Off
KBC ON ON Power Down Power Off
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