VT8235 datasheet(7/145 Pages) VIA

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VT8235 V-Link South Bridge

Revision 1.22 October 24, 2002

-1-

Product Features

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VT8235

LOW COST V-LINK CLIENT

HIGHLY INTEGRATED SOUTH BRIDGE

HIGH BANDWIDTH V-LINK CLIENT CONTROLLER

INTEGRATED FAST ETHERNET,

INTEGRATED DIRECT SOUND AC97 AUDIO,

ULTRADMA-133/100/66/33 MASTER MODE EIDE CONTROLLER,

SIX PORT USB 2.0 CONTROLLER, KEYBOARD / MOUSE CONTROLLER,

RTC, LPC, SMBUS, SERIAL IRQ, PLUG AND PLAY, ACPI,

AND

PC2001 COMPLIANT ENHANCED POWER MANAGEMENT

PRODUCT FEATURES

Inter-operable with VIA Host-to-V-Link Host Controller

− Combine with VT8754 (Apollo P4X333) for a complete 533 / 400 MHz FSB Pentium 4 system

− Combine with VT8377 (Apollo KX400) for a complete 266 / 200 MHz FSB Athlon Socket-A system

High Bandwidth 533 MB/s 8-bit V-Link Client Controller

− Supports 66 MHz V-Link Client interface with total bandwidth of 533 MB/sec

− V-Link operates in 2x, 4x, and 8x modes

− Full duplex commands with separate Strobe / Command

− Request / Data split transaction

− Configurable outstanding transaction queue for V-Link Client accesses

− Auto Client Retry to eliminate V-Link Host-Client Retry cycles

− Intelligent V-Link transaction protocol to eliminate data wait-state / throttle transfer latency; all V-Link transactions

for both Host and Client have a consistent view of transaction data depth and buffer size to avoid data overflow.

− Highly efficient V-Link arbitration with minimum overhead; all V-Link transactions have predictable cycle length

with known Command / Data duration

− Auto connect / reconnect capability and dynamic stop for minimum power consumption

− Parity checking to insure correct data transfers

Integrated Peripheral Controllers

− Integrated Fast Ethernet Controller with 1 / 10 / 100 Mbit capability

− Integrated USB 2.0 Controller with three root hubs and six function ports

− Dual channel UltraDMA-133 / 100 / 66 / 33 master mode EIDE controller

− AC-link interface for AC-97 audio codec and modem codec

− HSP modem support

− Integrated DirectSound compatible digital audio controller

− LPC interface for Low Pin Count interface to Super-I/O or ROM

Integrated Legacy Functions

− Integrated Keyboard Controller with PS2 mouse support

− Integrated DS12885-style Real Time Clock with extended 256 byte CMOS RAM and Day/Month Alarm for ACPI

− Integrated DMA, timer, and interrupt controller

− Serial IRQ for docking and non-docking applications

− Fast reset and Gate A20 operation

VT8235 Datasheet(PDF) 7 Page - VIA Technologies, Inc.

VT8235 Datasheet(HTML) 7 Page - VIA Technologies, Inc.

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