Product specifications

VT8237R Data Sheet
Revision 2.06 December 15, 2004 -1- Product Features
VT8237R
“ULTRA V-LINK” SERIAL ATA SOUTH BRIDGE
16-B
IT V-LINK FOR HIGH BANDWIDTH NORTH BRIDGE DATA TRANSFER,
D
UAL CHANNEL SERIAL ATA / RAID CONTROLLER,
U
LTRADMA-133/100/66/33 MASTER MODE EIDE CONTROLLER,
I
NTEGRATED FAST ETHERNET AND EIGHT PORT USB 2.0,
D
IRECT SOUND AC97 AUDIO, KEYBOARD / MOUSE CONTROLLER,
RTC, LPC, SMB
US, SERIAL IRQ, PLUG AND PLAY, ACPI,
AND PC2001 COMPLIANT ENHANCED POWER MANAGEMENT
PRODUCT FEATURES
• Inter-operable with a wide variety of existing VIA North Bridges
− Combines with PT890 / K8T890 for high performance Pentium 4 / Athlon 64 (Operton) based server / workstation /
desktop designs
− Combines with PT880 / KT600 / KT880 / K8T800 for performance Pentium 4 / Athlon / Athlon 64 (Operton) based
desktop designs
− Combines with PM880 / PM800 / KM400A for value Pentium 4 / Athon based desktop designs
− Combines with PN880 / PN800 / KN400A for complete Pentium 4 / Athlon based mobile designs
− Combines with CN400 for complete featured, power efficient VIA C3 based desktop / mobile embedded designs
• High Bandwidth 1GB/sec 16-bit“Ultra V-Link” Client Controller
− Supports 16-bit, 66 MHz, 4x and 8x transfer modes, Ultra V-Link interface with 1 GB/sec total bandwidth
− Full duplex, with separate 8-bit Up and Down data path and command / strobe, in 8x mode
− Half duplex, with 16-bit data path, in 4x mode
− Request / Data split-transaction
− Transaction assurance for V-Link Host-to-Client access eliminates V-Link Host-Client Retry cycles
− Intelligent V-Link transaction protocol to minimize data wait-state and throttle transfer latency to avoid data
overflow
− Highly efficient V-Link arbitration with minimum overhead
• Integrated Peripheral Controllers
− Dual channel Serial ATA / RAID controller
− Dual channel UltraDMA-133 / 100 / 66 / 33 master mode EIDE controller
− Integrated Fast Ethernet Controller with 1 / 10 / 100 Mbit capability
− Integrated USB 2.0 Controller with four root hubs and eight function ports
− 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