QG82945GMESLA9H データシートの表示（PDF） - Intel

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QG82945GMESLA9H

Intel® 945G/945GZ/945GC/ 945P/945PL Express Chipset Family

Intel 

Contents

1

Introduction ....................................................................................................................... 17

1.1 Terminology.......................................................................................................... 21

1.2 Reference Documents.......................................................................................... 23

1.3 (G)MCH Overview ................................................................................................ 23

1.3.1 Host Interface........................................................................................ 24

1.3.2 System Memory Interface ..................................................................... 24

1.3.3

1.3.4

Direct Media Interface (DMI)................................................................. 25

PCI Express* Interface (Intel® 82945G/82945GC/82945P/82945PL

(G)MCH Only) ....................................................................................... 26

1.4 Graphics (Intel® 82945G/82945GC/82945GZ GMCH Only) ................................ 27

1.5 Analog and SDVO Displays (Intel® 82945G/82945GC/82945GZ GMCH Only) .. 29

1.5.1 System Interrupts.................................................................................. 29

1.5.2 (G)MCH Clocking.................................................................................. 29

1.5.3 Power Management.............................................................................. 30

2

Signal Description ............................................................................................................. 31

2.1 Host Interface Signals .......................................................................................... 33

2.2 DDR2 DRAM Channel A Interface ....................................................................... 36

2.3 DDR2 DRAM Channel B Interface ....................................................................... 37

2.4 DDR2 DRAM Reference and Compensation ....................................................... 38

2.5 PCI Express* Interface Signals (Intel® 82945G/82945GC/82945P/82945PL

Only) ..................................................................................................................... 38

2.6 Analog Display Signals (Intel® 82945G/82945GC/ 82945GZ GMCH Only) ....... 39

2.7 Clocks, Reset, and Miscellaneous ....................................................................... 40

2.8 Direct Media Interface (DMI) ................................................................................ 41

2.9 Intel® Serial DVO (SDVO) Interface (Intel® 82945G/82945GC/82945GZ GMCH

Only) ..................................................................................................................... 41

2.10 Power and Ground ............................................................................................... 43

2.11 Reset States and Pull-up/Pull-downs ................................................................... 44

3

Register Description.......................................................................................................... 49

3.1 Register Terminology ........................................................................................... 50

3.2 Platform Configuration.......................................................................................... 50

3.3 Configuration Mechanisms................................................................................... 53

3.3.1

3.3.2

Standard PCI Configuration Mechanism .............................................. 53

PCI Express* Enhanced Configuration Mechanism (Intel®

82945G/82945GC/82945P/82945PL (G)MCH Only) ........................... 53

3.4 Routing Configuration Accesses .......................................................................... 55

3.4.1 Internal Device Configuration Accesses............................................... 56

3.4.2

Bridge Related Configuration Accesses ............................................... 56

3.4.2.1 PCI Express* Configuration Accesses (Intel®

82945G/82945GC/82945P/82945PL (G)MCH Only) .......... 56

Intel® 82945G/82945G/82945GC GMCH and 82945P/82945PL MCH Datasheet

3

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