AMD-762 Datasheet, PDF (14/122 Pages) Advanced Micro Devices – System Controller

Preliminary Information
AMD-762™ System Controller Data Sheet
24416C—December 2001
This document describes the features and operation of the
AMD-762 system controller. For a description of the AMD-766
peripheral bus controller, see the AMD-766™ Peripheral Bus
Controller Data Sheet, order# 23167. For a description of the
AMD-768 peripheral bus controller, see the AMD-768™
Peripheral Bus Controller Data Sheet, order# 24467. Key features
of the AMD-762 system controller are provided in this section.
1.1 AMD Athlon™ System Buses
The AMD Athlon system buses have the following features:
n High-performance point-to-point system bus topology
n Source-synchronous clocking for high-speed transfers
n 200- or 266-MHz, split-transaction AMD Athlon system bus
interface
n 1.6 Gbytes/s peak data transfer rates at 100/200 MHz,
2.1 Gbytes at 133/266 MHz
n Large 64-byte (cache line) data burst transfers
1.2 Integrated Memory Controller
The integrated memory controller has the following features:
n The AMD-762 system controller supports the following
concurrencies:
• Processor-to-main-memory with PCI-to-main-memory
• Processor-to-main-memory with AGP-to-main-memory
• Processor-to-PCI with PCI-to-main-memory or
AGP-to-main-memory
n Memory Error Correcting Code (ECC) support
n Supports the following DRAM:
• Supports 64-Mbit, 128-Mbit, 256-Mbit, and 512-Mbit
technology
• 64-bit data width, plus 8-bit ECC paths
• Flexible row and column addressing
n Supports up to 4 Gbytes of memory
n Four open pages within one CS (device selected by chip
select)
2
Features
Chapter 1