Power Management - Acpi; Introduction; Power State Transition Diagram; Embedded Controller - Toshiba Satellite 1700 Series Maintenance Manual

1 Hardware Overview
1.23 Power Management – ACPI
1.23.1

Introduction

The Advanced Configuration and Power Interface (ACPI) is a well-specified power
management and configuration mechanism. It involves the existing collection of power
management codes, APM, PnP BIOS, etc.
1.23.2

Power State Transition Diagram

The state transition diagram in ACPI mode is as follows:
From (State)
S1/S3 Power Button
Modem ring
MiniPCI LAN
Alarm
USB
S4 Resume button request
S0 Press power button (depends on ACPI OS setting)
Press lid switch (depends on ACPI OS setting)
Standby icon in shutdown menu in windows
ACPI OS timer expired
Critical low battery (depends on ACPI OS setting)
S0 Critical low battery (depends on ACPI OS setting)
Press lid switch (depends on ACPI OS setting)
Press power button (depends on ACPI OS setting)
1.23.3

Embedded Controller

The keyboard controller will act as the ACPI embedded controller and support the ACPI EC
protocol and interface.
1.23.4

Storage Devices and Batteries

Possible storage devices are FDD, HDD, and CD-ROM Configurations.
Floppy Disk and Hard Disk and CD-ROM
Satellite 1700 Series Maintenance Manual
Leave By Condition
1.23 Power Management – ACPI
Enter (State)
S0
S1/S3
S4
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