Product specifications

VT8235 V-Link South Bridge
Revision 1.22 October 24, 2002 -1- Product Features
VT8235
LOW COST V-LINK CLIENT
H
IGHLY INTEGRATED SOUTH BRIDGE
HIGH BANDWIDTH V-LINK CLIENT CONTROLLER
I
NTEGRATED FAST ETHERNET,
I
NTEGRATED DIRECT SOUND AC97 AUDIO,
U
LTRADMA-133/100/66/33 MASTER MODE EIDE CONTROLLER,
S
IX PORT USB 2.0 CONTROLLER, KEYBOARD / MOUSE CONTROLLER,
RTC, LPC, SMB
US, SERIAL IRQ, PLUG AND PLAY, ACPI,
AND PC2001 COMPLIANT ENHANCED POWER MANAGEMENT
PRODUCT FEATURES
x 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
x 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
x 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
x 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