8399 N/B Maintenance

￿Integrated bus-mastering dual full-duplex direct-sound AC97-link-compatible sound system.

￿Plug and Play controller that allows complete steer ability of all PCI interrupts and internal interrupts / DMA channels to any interrupt channel. One additional steerable interrupt channel is provided to allow plug and play and reconfigure ability of onboard peripherals for Windows family compliance.

The VT8235CD also enhances the functionality of the standard ISA peripherals. The integrated interrupt controller

supports both edge and level triggered interrupts channel by channel. The integra ed DMA controller supports type F DMA in addition to standard ISADMA modes. Compliant with he PCI-2.2 specification, the VT8235CD supports

PCI bus. Special circuitry is built in to allow concurrentSecretoperation without causing dead lock even in a PCI-to-PCI bridge environment. The chip also includes eight levels (double words) of line buffers from the PCI bus to the ISA

delayed transactions and remote power management so that slow ISA periph rals do not block the traffic of the

bus to further enhance overall system perform nce.

Document

 

 

 

 

 

 

 

 

 

 

CPU/Cache

CA

Nor h Bridge

MA/Command

System Memory

 

 

CD

MD

 

 

 

 

MiTac

 

 

 

DIMM Module ID

 

 

Sideband Signals

 

 

 

Vlink

 

 

 

 

Init/A20M#

 

 

 

Interface

 

 

 

 

 

 

 

 

INIR/NMI

 

 

 

 

SMB

 

 

 

 

 

 

 

SMI/Stop CLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FERR/IGNNE Sleep

 

 

 

 

USB 2.0 Ports 0~5

 

 

Expansion

 

 

 

 

 

 

 

 

VT8235

Keyboard/Mouse

 

 

Cards

 

 

 

 

 

 

LPC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BootConfidentialRom

PCI

 

 

 

 

 

 

 

 

 

 

 

 

487 BGA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IDE Primary and Secondary

 

 

 

 

 

 

 

 

 

 

 

On board

 

 

 

 

 

 

AC97 Link

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RTC

 

 

 

APLC

 

 

 

 

 

 

 

LPC I/O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GPIO, Power Control, Reset

 

 

 

 

 

Crystal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MII Fast Ethernet Interface

Figure 1. PC System Configuration Using the VT8233

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