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VT82C586B

PCI Integrated Peripheral Controller

Unspecified 

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VT82C586B

OVERVIEW

The VT82C586B PIPC (PCI Integrated Peripheral Controller) is a high integration, high performance and high compatibility

device that supports Intel and non-Intel based processor to PCI bus bridge functionality to make a complete Microsoft PC97-

compliant PCI/ISA system. In addition to complete ISA extension bus functionality, the VT82C586B includes standard intelligent

peripheral controllers:

a) Master mode enhanced IDE controller with dual channel DMA engine and interlaced dual channel commands. Dedicated

FIFO coupled with scatter and gather master mode operation allows high performance transfers between PCI and IDE

devices. In addition to standard PIO and DMA mode operation, the VT82C586B also supports the emerging UltraDMA-33

standard to allow reliable data transfer rates up to 33MB/sec throughput. The IDE controller is SFF-8038i v1.0 and

Microsoft Windows-95 compliant.

b) Universal Serial Bus controller that is USB v1.0 and Universal HCI v1.1 compliant. The VT82C586B includes the root hub

with two function ports with integrated physical layer transceivers. The USB controller allows hot plug and play and

isochronous peripherals to be inserted into the system with universal driver support. The controller also implements legacy

keyboard and mouse support so that legacy software can run transparently in a non-USB-aware operating system

environment.

c) Keyboard controller with PS2 mouse support.

d) Real Time Clock with 256 byte extended CMOS. In addition to the standard ISA RTC functionality, the integrated RTC also

includes the date alarm and other enhancements for compatibility with the ACPI standard.

e) Notebook-class power management functionality that is compliant with ACPI and legacy APM requirements. Two types of

sleep states (soft-off and power-on-suspend) are supported with hardware automatic wake-up. Additional functionality

includes event monitoring, CPU clock throttling (Intel processor protocol), modular power control, hardware- and software-

based event handling, general purpose IO, chip select and external SMI.

f) Distributed DMA capability for support of ISA legacy DMA over the PCI bus.

g) Plug and Play controller that allows complete steerability of all PCI interrupts to any interrupt channel. Three additional

steerable interrupt channels are provided to allow plug and play and reconfigurability of on-board peripherals for Windows

95 compliance.

h) External IOAPIC support for Intel-compliant symmetrical multiprocessor systems.

The VT82C586B 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-2.1 specification, the VT82C586B supports delayed transactions so that

slower ISA peripherals do not block the traffic of the PCI bus. Special circuitry is built in to allow concurrent operation without

causing dead lock even in a PCI-to-PCI bridge environment The chip also includes eight levels (doublewords) of line buffers from

the PCI bus to the ISA bus to further enhance overall system performance.

CPU / Cache

CA

CD

Sideband Signals:

Init / CPUreset

IRQ / NMI

SMI / StopClk

FERR / IGNNE

RTC

Crystal

Boot ROM

North Bridge

VT82C586B

208PQFP

MA/RAS/CAS

MD

PCI

System Memory

I2C (Module ID)

USB

KBC

IDE

Expansion

Cards

GPIO, Power Control, Reset

ISA

Figure 1. PC System Configuration Using the VT82C586B

Revision 1.0 May 13, 1997

-3-

Overview

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