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.

The AMD-761™ system controller provides standard Northbridge functionality for desktop personal computers using the AMD Athlon™ family of processors. This 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.