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82845GE Schematic ( PDF Datasheet ) - Intel

Teilenummer 82845GE
Beschreibung (82845GE / 82845PE) Memory Controller Hub
Hersteller Intel
Logo Intel Logo 




Gesamt 30 Seiten
82845GE Datasheet, Funktion
Intel® 845GE/845PE Chipset
Datasheet
Intel® 82845GE Graphics and Memory Controller Hub (GMCH) and
Intel® 82845PE Memory Controller Hub (MCH)
October 2002
Document Number: 251924-001






82845GE Datasheet, Funktion
4 System Address ................................................................................................ 101
4.1 System Memory Address Ranges ............................................................... 101
4.1.1 Compatibility Area........................................................................... 103
4.1.2 Extended Memory Area .................................................................. 105
4.1.2.1 15 MB–16 MB Window.................................................... 105
4.1.2.2 Pre-Allocated Memory..................................................... 105
4.1.3 AGP Memory Address Ranges....................................................... 108
5 Functional Description ................................................................................... 109
5.1 Processor System Bus ................................................................................ 109
5.1.1 PSB Dynamic Bus Inversion........................................................... 109
5.1.2 System Bus Interrupt Delivery ........................................................ 110
5.1.3 Upstream Interrupt Messages......................................................... 110
5.2 System Memory Controller .......................................................................... 111
5.2.1 DDR SDRAM Interface Overview ................................................... 111
5.2.2 Memory Organization and Configuration ........................................ 111
5.2.2.1 Configuration Mechanism for DIMMs .............................. 112
5.2.3 Memory Address Translation and Decoding................................... 113
5.2.4 DRAM Performance Description..................................................... 113
5.3 AGP Interface .............................................................................................. 114
5.3.1 Overview ......................................................................................... 114
5.3.1.1 Lock Behavior.................................................................. 114
5.3.1.2 AGP Target Operations................................................... 115
5.3.1.3 AGP Transaction Ordering .............................................. 116
5.3.1.4 AGP Electrical Characteristics ........................................ 116
5.3.1.5 Support for PCI-66 Devices............................................. 116
5.3.1.6 4X AGP Protocol ............................................................. 117
5.3.1.7 Fast Writes ...................................................................... 117
5.3.1.8 AGP 1.5 V Connector...................................................... 117
5.3.2 PCI Semantic Transactions on AGP............................................... 118
5.3.2.1 Intel® (G)MCH Initiator and Target PCI Operations ........ 118
5.3.2.2 Intel® (G)MCH Retry/Disconnect Conditions................... 120
5.4 Integrated Graphics Device (IGD) (Intel® 82845GE only) ........................... 122
5.4.1 3D Engine ....................................................................................... 123
5.4.1.1 Setup Engine................................................................... 123
5.4.1.2 Scan Converter ............................................................... 124
5.4.1.3 2D Functionality............................................................... 124
5.4.1.4 Texture Engine ................................................................ 124
5.4.1.5 Raster Engine.................................................................. 127
5.4.1.6 2D Engine........................................................................ 129
5.4.1.7 Intel® GMCH VGA Registers........................................... 130
5.4.1.8 Logical 128-Bit Fixed BLT and 256-Bit Fill Engine .......... 130
5.4.2 Video Engine .................................................................................. 131
5.4.2.1 Hardware Motion Compensation..................................... 131
5.4.2.2 Planes ............................................................................. 131
5.4.2.3 Cursor Plane ................................................................... 131
5.4.2.4 Overlay Plane.................................................................. 132
5.4.3 Pipes ............................................................................................... 133
5.4.3.1 Clock Generator Units (DPLL)......................................... 133
5.4.4 Ports ............................................................................................... 133
5.5 Display Interfaces (Intel® 82845GE only) .................................................... 134
5.5.1 Analog Display Port Characteristics................................................ 135
5.5.2 Digital Display Interface .................................................................. 136
6 Intel® 82845GE/82845PE Datasheet

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82845GE pdf, datenblatt
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12 Intel® 82845GE/82845PE Datasheet

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SeitenGesamt 30 Seiten
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