Via PRO 133, PRO 133A Manual

V I A P E R F O R M A N C E C H I P S E T

APOLLO PRO133A

The VIA Apollo Pro133A delivers advanced performance through support for AGP 4X, 133MHz FSB, PC133 SDRAM, ATA-66 and other leading technologies.

VT82C694X

Northbridge

VT82C596B

Southbridge

The Apollo Pro133A builds on the success of the Apollo Pro133, the industry’s first available PC133 chipset. The Apollo Pro133A adds even more high-end features while still maintaining its scalability and superior value. It is the first chipset to market with support for AGP 4X, the latest advanced graphics protocol. A 133MHz-capable front-side bus optimizes the performance of Intel’s 133MHz Pentium® III and other nextgeneration processors. A highly scalable asynchronous bus design also

makes the Apollo Pro133A suitable for Pentium® II and Celeron™-based systems. Through its advanced memory controller architecture, the Apollo Pro133A supports PC133 and VC/133 DRAMs, the latest high-performance and cost-effective memory types. Support for ATA-66, the latest fast-IDE transfer protocol, advances HDD access and data throughput and boosts overall system performance.

Additional features include 2 USB ports and advanced power management.

APOLLO PRO133A BLOCK DIAGRAM

Slot 1 or Socket 370

Processor

133MHz FSB

133MHz

Memory

AGP 4X

AGP Bus

VT82C694X

Bus

PC133

510 BGA

SDRAM

PCI Bus

Clock Buffer

Clock

ISA

Generator

VT82C596B

ATA 33/66

BIOS ROM

SMBus

USB

324 BGA

Power Plane & Peripheral Control

Keyboard/Mouse

GPIO and ACPI Events