VIA Pro266 Chipset

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The VIA Apollo Pro 266 is an efficient, cost-effective, flexible chipset solution for Socket 370 systems based on the Intel® Pentium® III, Intel® Celeron™ & VIA C3® Processors, across a full spectrum of applications. Through its V-Link memory controller architecture, the VIA Apollo Pro266 chipset supports up to 4.0GB of DDR200/266 SDRAM at a peak bandwidth of 2.1GB per second. These memory technologies provide the bandwidth and performance necessary for even demanding Internet and 3D graphics applications at a minimal cost premium over PC133 SDRAM. DDR266 SDRAM lowers memory power consumption as well, providing the ideal solution for small form factor desktops and notebooks. The VIA Pro266 also has a flexible 133/100/66 MHz front side bus, and its asynchronous bus design are also ideal for Pentium® III, Celeron™ & VIA C3® processors. An AGP 4X/2X controller enables connection with external graphics cards, and an ATA 100 interface delivers maximum sustained data transfer rates of 100MB/sec. A V-link chip interconnect offers 266MB/s of bandwidth between North and South Bridge.

In combination with the VIA VT8233 South Bridge Controller (see the block diagram below), the Pro266 support for six USB ports, AC-97 link for audio and modem, hardware monitoring, and ACPI/OnNow power management.

Features of VIA Pro266

Features	Benefits
200/266MHz Memory Bus	Maximizes the performance of Value PCs and Internet Appliances at minimal extra cost through support for high-speed DDR200/266
Flexible 66/100/133MHz Front Side Bus Settings	Optimizes the performance of a complete range of Intel®Pentium? III, Intel®Celeron™, and the VIA C3® processors running at a variety of FSB speeds.
V-Link Hub Architecture	Dedicated 266MB/sec link between the North and South Bridge, doubling the bandwidth of the traditional PCI Bus.
AGP4X Interface	Ensures vivid 3D graphics and video performance.
ATA 100 Support	Enhances PC system responsiveness through high-speed HDD connections.
AC-97 Audio	Provides cost-effective solution for delivering high-quality audio capabilities.*
MC-97 Modem	Enables low-cost connectivity to the Internet through an ACR fax/modem module.
Support for Six USB Ports	Provides convenient Plug 'n' Play connections to the growing number of USB peripherals and enables Legacy Free system designs.

*Requires onboard audio Codec or ACR expansion slot on the motherboard.

Block Diagram

Key Features

» Supports Intel®Pentium? III, Intel®Celeron™ & VIA C3® Processors
» 66/100/133MHz FSB Settings
» Support for AGP 2X/4X
» Supports up to 4.0GB DDR200/266 SDRAM as well as PC100/133 SDRAM and Virtual Channel memory
» 266MB/sec high bandwidth North/South Bridge V-Link
» Support for Advanced Communications Riser (ACR) Card Standard
» Integrated 6 Channel AC-97 Audio
» Integrated MC-97 Modem
» Integrated 10/100 BaseT Ethernet and 1/10MB Home PNA controller
» Support for ATA 33/66/100
» 6 USB ports, UHCI compliant
» Advanced power management capabilitiess
» 552-pin BGA VT8633 North Bridge
» 376 -pin BGA VT8233 South Bridge