VIA Technologies KT880 Specifications Page 6
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VT8237R Data Sheet
Revision 2.06 December 15, 2004 -iv- Table Of Contents
FUNCTIONAL DESCRIPTIONS................................................................................................................................................ 164
POWER MANAGEMENT.............................................................................................................................................................. 164
Power Management Subsystem Overview .......................................................................................................................................... 164
Processor Bus States............................................................................................................................................................................ 165
System Suspend States and Power Plane Control................................................................................................................................ 165
General Purpose I/O Ports ................................................................................................................................................................... 166
Power Management Events ................................................................................................................................................................. 166
System and Processor Resume Events................................................................................................................................................. 167
Legacy Power Management Timers .................................................................................................................................................... 168
System Primary and Secondary Events ............................................................................................................................................... 168
Peripheral Events................................................................................................................................................................................. 168
ELECTRICAL SPECIFICATIONS ............................................................................................................................................ 169
ABSOLUTE MAXIMUM RATINGS ............................................................................................................................................... 169
DC CHARACTERISTICS.............................................................................................................................................................. 169
REGISTER BITS POWERED BY VBAT ....................................................................................................................................... 170
REGISTER BITS POWERED BY VSUS25 .................................................................................................................................... 170
POWER REQUIREMENTS............................................................................................................................................................ 171
PACKAGE MECHANICAL SPECIFICATIONS...................................................................................................................... 172
- Data Sheet 1
- Copyright Notice: 2
- Disclaimer Notice: 2
- Offices: 2
- REVISION HISTORY 3
- TABLE OF CONTENTS 4
- LIST OF FIGURES 7
- LIST OF TABLES 8
- VT8237R Data Sheet 10
- OVERVIEW 12
- PIN DESCRIPTIONS 18
- CPU Interface 19
- CPU Speed Control Interface 19
- PCI Bus Interface 20
- Serial EEPROM Interface 21
- Serial ATA Interface 24
- AC97 Audio / Modem Interface 25
- Serial IRQ 25
- PC / PCI DMA 25
- Internal Keyboard Controller 26
- Speaker 26
- Programmable Chip Selects 27
- General Purpose Inputs 27
- General Purpose Outputs 28
- General Purpose I/O 28
- Power and Ground 30
- Strap Pins 31
- REGISTERS 32
- Reserved Default Acc 34
- KB / Mouse Wakeu 34
- APIC Registers Default Acc 34
- SATA Confi 35
- IDE I/O Registers Default Acc 37
- USB Control Default Acc 38
- USB I/O Re 38
- USB Control Default Acc 42
- Host Controller O 42
- AC97 SGD I/O Re 48
- MC97 SGD I/O Re 48
- Power Management Default Acc 49
- Power Management Default Acc 50
- Register Descriptions 51
- .................. RW 58
- ................... RW 58
- ........................RW 63
- ................... RW 64
- Request (00h)...RW 66
- SATA LITE Control (00h) .. RW 66
- .......................RW 73
- ...................... RW 73
- ..................... RW 73
- .......RW 74
- ....................RW 75
- Access Data (00000000h) .RW 99
- ...............RW 101
- ).........................RW 109
- ...... default 110
- ......................RW 112
- ...................RW 113
- ) ..................... RW 113
- .............. RW 123
- 3h (command match) 137
- DataType / SampleRateRW 144
- ....................RWC 145
- Current Count.. RO 146
- 0 SGD Stop Index ... RW 148
- 1 SGD Stop Index ... RW 150
- ................. RW 157
- .... RO 163
- ............ RO 163
- FUNCTIONAL DESCRIPTIONS 172
- ELECTRICAL SPECIFICATIONS 177
- Register Description 178
- Power Requirements 179
- VT8237R 180
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