Contents
1 INTRODUCTION....................................................................................................................................19
1.1 >>>Principal Goals................................................................................................................................................ 19
1.2 >>>Power Management Rationale.......................................................................................................................20
1.3 >>>Legacy Support...............................................................................................................................................21
1.4 >>>OEM Implementation Strategy......................................................................................................................21
1.5 >>>Power and Sleep Buttons................................................................................................................................21
1.6 >>>ACPI Specification and the Structure Of ACPI...........................................................................................21
1.7 >>>OS and Platform Compliance........................................................................................................................23
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1.8 >>>Target Audience.............................................................................................................................................. 27
1.9 >>>Document Organization..................................................................................................................................27
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2.1 >>>Related Documents.........................................................................................................................................29
3 >>>DEFINITION OF TERMS....................................................................................................................30
3.1 >>>General ACPI Terminology...........................................................................................................................30
3.2 >>>Global System State Definitions.....................................................................................................................35
3.3 >>>Device Power State Definitions.......................................................................................................................37
3.4 >>>Sleeping State Definitions...............................................................................................................................38
3.5 >>>Processor Power State Definitions.................................................................................................................39
3.6 >>>Device and Processor Performance State Definitions...................................................................................39
4 >>>ACPI OVERVIEW.................................................................................................................................41
4.1 >>>System Power Management...........................................................................................................................42
4.2 >>>Power States.................................................................................................................................................... 42
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4.3 >>>Device Power Management............................................................................................................................45
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4.4 >>>Controlling Device Power...............................................................................................................................46
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4.5 >>>Processor Power Management.......................................................................................................................50
4.6 >>>Device and Processor Performance States.....................................................................................................51
4.7 >>>Configuration and “Plug and Play”...............................................................................................................51
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4.8 >>>System Events..................................................................................................................................................52
4.9 >>>Battery Management......................................................................................................................................53
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Hewlett-Packard/Intel/Microsoft/Phoenix/Toshiba