參數(shù)資料
型號(hào): 82845GL
廠商: INTEL CORP
元件分類: 外設(shè)及接口
英文描述: Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH)
中文描述: MULTIFUNCTION PERIPHERAL, PBGA760
封裝: 37.50 X 37.50 MM, 1 MM PITCH, FLIP CHIP, BGA-760
文件頁(yè)數(shù): 13/193頁(yè)
文件大小: 2990K
代理商: 82845GL
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Intel
82845G/82845GL/82845GV GMCH Datasheet
13
Introduction
Introduction
1
This Graphics and Memory Controller Hub (GMCH) datasheet is for the Intel
82845G GMCH,
Intel
82845GL GMCH, and Intel
82845GV GMCH. The 82845G GMCH is part of the Intel
845G chipset, the 82845GL GMCH is part of the Intel
845GL chipset, and the 82845GV GMCH
is part of the Intel
845GV chipset. Each chipset contains two main components: Graphics and
Memory Controller Hub (GMCH) for the host bridge and I/O Controller Hub for the I/O
subsystem. The GMCH provides the processor interface, system memory interface, hub interface,
and additional interfaces in an 845G / 845GL / 845GV chipset desktop platform. Each GMCH
contains an integrated graphics controller (IGD). The 845G chipset, 845GL chipset, and 845GV
chipset use the 82801DB ICH4 for the I/O Controller Hub.
The following are the key feature differences between the 82845G GMCH, 82845GL GMCH, and
82845GV GMCH:
Processor System Bus (PSB) frequency
— 82845G and 82845GV support 533 MHz/400 MHz frequencies and Hyper-Threading
Technology.
— 82845GL supports 400 MHz only and does not support Hyper-Threading Technology.
AGP Interface
— 82845G supports AGP. The AGP interface signals are multiplexed with the Intel
DVO
interface signals.
— 82845GL and 82845GV do not support AGP.
Chapter 1
through
Chapter 8
describe the 82845G GMCH. The 82845GL GMCH and 82845GV
GMCH are described in
Chapter 9
.
1.1
Terminology
Term
Description
Accelerated
Graphics Port
(AGP)
This refers to the AGP/PCI_B interface on the GMCH. The GMCH AGP interface
supports only 1.5 V
Accelerated Graphics Port Interface, Specification 2.0
-compliant
devices using PCI (66 MHz), AGP 1X (66 MHz), 2X (133 MT/s) and 4X (266 MT/s)
transfers. The GMCH does NOT support 3.3 V devices. PIPE# and SBA addressing
cycles and their associated data phases are generally referred to as AGP transactions.
FRAME# cycles are generally referred to as AGP/PCI transactions.
AGP/PCI
AGP/PCI in the document refers to AGP/PCI_B.
Chipset Core
The GMCH internal base logic.
DDR
Double Data Rate SDRAM.
Full Reset
A Full GMCH Reset is defined in this document when RSTIN# is asserted.
GART
Graphics Aperture Re-Map Table. Table in memory containing the page re-map
information used during AGP aperture address translations.
GMCH
The Graphics and Memory Controller Hub (GMCH) component contains the processor
interface, SDRAM controller, AGP interface, and an integrated 3D/2D/display graphics
core. It communicates with the I/O Controller Hub 4 (ICH4) over a proprietary interconnect
called the hub interface.
相關(guān)PDF資料
PDF描述
82845GV Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH)
82845Gx Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH)
82845MP Intel 845 Family Chipset-Mobile 82845MP/82845MZ Chipset Memory Controller Hub Mobile (MCH-M)
82845Mx Intel 845 Family Chipset-Mobile 82845MP/82845MZ Chipset Memory Controller Hub Mobile (MCH-M)
82845MZ Intel 845 Family Chipset-Mobile 82845MP/82845MZ Chipset Memory Controller Hub Mobile (MCH-M)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
82845GV 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH)
82845GX 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH)
82845MP 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Intel 845 Family Chipset-Mobile 82845MP/82845MZ Chipset Memory Controller Hub Mobile (MCH-M)
82845MX 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Intel 845 Family Chipset-Mobile 82845MP/82845MZ Chipset Memory Controller Hub Mobile (MCH-M)
82845MZ 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Intel 845 Family Chipset-Mobile 82845MP/82845MZ Chipset Memory Controller Hub Mobile (MCH-M)