AMD-761 datasheet(13/264 Pages) AMD

13 / 264 page

Chapter 1

Overview

24081D—February 2002

AMD-761™ System Controller Software/BIOS Design Guide

Preliminary Information

Overview

The AMD Athlon™ processor powers the next generation in computing

platforms, delivering the ultimate performance for cutting-edge

applications and an unprecedented computing experience.

Th e AMD-76 1™ sys t em contro ll er prov i d es s t andard

Northbridge functionality for desktop personal computers

usi n g the AM D A t h l o n™ f a mi l y o f pr oce sso r s . T h i s

functionality includes the processor interface as well as PCI,

AGP, and main memory interface implementing state of the art

Double Data Rate (DDR) synchronous DRAM technology.

This document provides information typically required for

development of the system BIOS and device drivers to properly

program the AMD-761 system controller configuration

registers. The document is organized as follows:

Section 1 provides an overview of the general BIOS

requirements for initializing the AMD-761 system controller

configuration registers.

Section 2 on page 9 contains a description of all AMD-761

system controller configuration registers.

Section 3 on page 149 contains additional information on

setup of the DDR SDRAM interface configuration registers.

Section 4 on page 185 contains additional information on

configuration of the power management features of the

AMD-761 system controller.

Section 5 on page 195 contains additional information on

setup of the PCI bus interface configuration registers.

Section 6 on page 205 contains additional information on

setup of the AGP interface configuration registers.

Section 7 on page 211 contains a list of recommended

settings for many of the

AMD-761 system controller

configuration registers.

AMD-761 Datasheet(PDF) 13 Page - Advanced Micro Devices