VT8235M

Product Summary

The VT8235M is a Version CD South Bridge. It is a high integration, high performance, power-efficient, and high compatibility device that supports Intel and non-Intel based processor to V-Link bus bridge functionality to make a complete Microsoft PC2001-compliant PCI/LPC system. The VT8235M also enhances the functionality of the standard ISA peripherals. The integrated interrupt controller supports both edge and level triggered interrupts channel by channel. The integrated DMA controller supports type F DMA in addition to standard ISA DMA modes. Compliant with the PCI-2.2 specification, the VT8235M Version CD supports delayed transactions and remote power management so that slower ISA peripherals do not block the traffic of the PCI bus.

Parametrics

VT8235M absolute maximum ratings: (1)TS Storage Temperature: –55 to 125 ℃; (2)TC Case Operating Temperature: 0 to 85 ℃; (3)VCC Core Voltage:–0.5 to 2.625 Volts; (4)VSUS25 Suspend Voltage – 2.5V: –0.5 to VCC + 0.3 Volts; (5)VSUSUSB Suspend Voltage – USB: –0.5 to VCC + 0.3 Volts; (6)VSUSMII Suspend Voltage – LAN: –0.5 to VCC + 0.3 Volts; (7)VCCVK V-Link Voltage: –0.5 to VCC + 0.3 Volts; (8)VCCPLL PLL Voltage: –0.5 to VCC + 0.3 Volts; (9)VCCUPLL USB PLL Voltage: –0.5 to VCC + 0.3 Volts; (10)VCC LAN RAM Voltage: –0.5 to VCC + 0.3 Volts.

Features

VT8235M features: (1)Supports 66 MHz V-Link Client interface with total bandwidth of 533 MB/sec; (2)V-Link operates in 2x, 4x, and 8x modes; (3)Full duplex commands with separate Strobe / Command; (4)Request / Data split transaction; (5)Configurable outstanding transaction queue for V-Link Client accesses; (6)Auto Client Retry to eliminate V-Link Host-Client Retry cycles; (7)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; (8)Highly efficient V-Link arbitration with minimum overhead; all V-Link transactions have predictable cycle length with known Command / Data duration; (9).uto connect / reconnect capability and dynamic stop for minimum power consumption; (10)Parity checking to insure correct data transfers.

Diagrams