ASIX ELECTRONICS CORPORATION

First Released Date: 01/31/2002

4F, NO.8, Hsin Ann Rd., Science-based Industrial Park, Hsin-Chu City, Taiwan, R.O.C.

TEL: 886-3-579-9500

FAX: 886-3-563-9799

http://www.asix.com.tw

AX88655 P

5-Port 10/100/1000BASE-T Ethernet Switch

5-Port Gigabit Ethernet Switch with Embedded Memory

Document No.: AX88655-1.0 / V1.0 / Mar, 12,2002

Features

•

5-Port Gigabit Ethernet switch integrating MACs,

packet buffer memory and switching engine with

GMII/MII interface

•

Full Duplex 1000 Mbit/s.

•

Full and Half Duplex 10/100 Mbit/s

•

Supports auto-sensing or manual selection for

speed and duplex capability with an embedded

MPU

•

Store-and-forward operation support

•

Performs full wire-speed switching with no HOL

blocking

•

Broadcast storm control

•

Quality-of-Service provisioning on 802.1P tag and

port-pairs with two priority queues

•

Embedded 128K Byte SRAM for packet buffer

•

Integrated two-way Address-Lookup engine and

table for 4K MAC addresses

•

Programmable aging mechanism for the two-way

4K MAC addresses table

•

Full-duplex IEEE 802.3x flow control

•

Half-duplex back pressure flow control

•

Port trunking for high-bandwidth links

•

Provides 5 GPIO ports

•

Provides EEPROM interface for auto-configuration

•

System clock input is one 27MHz Crystal and one

125MHz Oscillator

•

2.5 and 3.3V operations

•

3.3 I/Os and packaged in 256-pin PQFP

Product Description

The AX88655 is a 5-Port 10/100/1000 Mbps Ethernet switch with GMII or MII Interface. The switch controller

provides network system manufacturers the ideal platform for building smart and cost-effective backbone switches for

small to medium sized businesses.

The AX88655 5-Port 10/100/100 BASE-T single chip switch controllers combine the benefits of network simplicity,

flexibility and high integration. Its highly integrated feature set enables network system manufacturers to build smart

switches for the fast-growing small to medium business market segment.

Benefits of AX88655 Switches are below.

Ø

Simplicity

Provides a smart, simple and low maintenance plug-and-play network interconnect system for small to

medium size businesses

Ø

Flexibility

Highly scalable configuration allows system manufacturers to enable or disable a range of features to best meet

their target price point

Ø

Integration

Highly integrated design drives down overall switch manufacturing costs.

Target Applications

ü

5-Port Gigabit Layer 2 Switches for workgroup

ü

High-port count Layer 2 switches with trunking

ü

High performance solution of Ethernet backbone

Always contact ASIX for possible updates before starting a design.

This data sheet contains new products information. ASIX ELECTRONICS reserves the rights to modify the product specification without notice. No

liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product.