ACC2087 查看數據表（PDF） - Unspecified

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ACC2087

ENHANCED SUPER CHIP

Unspecified 

ACC MicroTM

2087

Section 1

Introduction

1.1 2087 Features

Supports Intel iDX4, AMD AM486, Cyrix 5x86, TI 486s, and IBM Blue Lightning microprocessor with

operation up to 50 MHz

3.3V / 5.0V mixed voltage system design

Level 1 Write Back Cache

Level 2 Cache Controller

- Support either write back or write through implementation

- Up to 2 MB in cache size

High Performance DRAM Controller

- Supports four banks of 32-bit DRAM, Fast Page Mode only, allowing up to 64 MB memory

Integrated Peripheral Controller: 2 x 8237, 2 x 8259, 1 x 8254, 1 x 74612

Integrated Floppy Disk Controller supports two floppy disk drives

Supports one IDE interface

Supports two high speed 16C550 compatible UARTs with 16 Byte FIFOs

Supports one bi-directional Parallel port with ECP mode

Support PPM mode where Floppy Disk Drive can be used on Parallel Port

PS/2 compatible Keyboard Controller and Mouse

Power Management Control

- Power-On Suspend

- Power-Off Suspend

- Doze / Idle Detection

- Suspend / resume Button

- APM support

- SMM / SMI

- Stop Clock Protocol

- Battery monitoring signal and dedicated low-battery warning alarm

Supports Flash EPROM

Local Bus IDE

Fast reset / Fast gate A20 (Port 92)

256-pin PQFP device

1

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