User Guide

Software Functional Overview
FIC MD02 Service Manual 3-13
complete boot when awakened. Software uses a different state value to distinguish between
the S5 state and the S4 state to allow for initial boot operations within the BIOS to
distinguish whether or not the boot is going to wake from a saved memory image.
System Power Plane
The system components are grouped as the following parties to let the system to
control the On/Off of power under different power management modes.
3.4.1 System Power Plane
The system components are grouped as the following parties to let the system to control the
On/Off of power under different power management modes.
The power plane is divided as following:
Power Group Power
Control Pin
Controlled Devices
+B Nil IMM, (9V~20V)
+3VA Nil RTC I/F, PMU08
+12V PWRON PCMCIA Card, AC97 Codec
+5V PWRON PCMCIA Slot 5V
+3V PWRON VGA, PCMCIA, PCMCIA Slot 3V, DRAM, Twister(DRAM I/F),
M3885x, MAX3243
+5VS SUSB# FLASH ROM, HDD, CD-ROM, USB, Internal K/B, Glide Pad,
Audio AMP, Fan
+3VS SUSB# ISA I/F Power, Clock Generator & Buffer (W137)
+RTCVCCS Nil RTC
3.4.2 Power Management Mode Transition Flow Chart
From a user-visible level, the system can be thought of as being one of the states in the
following diagram:
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