RG82845G S L66F Intel, RG82845G S L66F Datasheet - Page 13

• Manufacturer Part Number: RG82845G S L66F
• Manufacturer: Intel

Specifications of RG82845G S L66F

• Lead Free Status / RoHS Status: Not Compliant

Introduction
1.1
Intel
®
82845G/82845GL/82845GV GMCH Datasheet
This Graphics and Memory Controller Hub (GMCH) datasheet is for the Intel
Intel
845G chipset, the 82845GL GMCH is part of the Intel
is part of the Intel
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:
Chapter 1
GMCH are described in
Terminology
Accelerated
Graphics Port
(AGP)
AGP/PCI
Chipset Core
DDR
Full Reset
GART
GMCH
•
•
Processor System Bus (PSB) frequency
AGP Interface
®
— 82845G and 82845GV support 533 MHz/400 MHz frequencies and Hyper-Threading
— 82845GL supports 400 MHz only and does not support Hyper-Threading Technology.
— 82845G supports AGP. The AGP interface signals are multiplexed with the Intel
— 82845GL and 82845GV do not support AGP.
82845GL GMCH, and Intel
Term
Technology.
interface signals.
through
®
Chapter 8
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 in the document refers to AGP/PCI_B.
The GMCH internal base logic.
Double Data Rate SDRAM.
A Full GMCH Reset is defined in this document when RSTIN# is asserted.
Graphics Aperture Re-Map Table. Table in memory containing the page re-map
information used during AGP aperture address translations.
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.
845GV chipset. Each chipset contains two main components: Graphics and
Chapter
describe the 82845G GMCH. The 82845GL GMCH and 82845GV
9.
®
82845GV GMCH. The 82845G GMCH is part of the Intel
Description
®
845GL chipset, and the 82845GV GMCH
®
82845G GMCH,
Introduction
®
DVO
1
®
13