ASIX ELECTRONICS CORPORATION

First Released Date : APR/02/1999

2F, NO.13, Industry East Rd. II, Science-based Industrial Park, Hsin-Chu City, Taiwan, R.O.C.

TEL: 886-3-579-9500

FAX: 886-3-579-9558

http://www.asix.com.tw

AX88615P

5-Port 10/100BASE Ethernet Switch

5-Port 10/100BASE Ethernet Switch Controller

Document No.: AX615-13 / V1.3 / Aug. 11 ’99

Features

•

Support 5 10/100 Mbps Ethernet ports with

RMII/MII interface

ü Provides packet switching functions between 5

10/100 Mbps, auto-negotiated ports

ü Ideal for SOHO switches and its application

•

Build in 5-ports 10/100Mbps Switch engine with

following features

ü Low cost SSRAM interface to reduce system cost

ü One or two 64K*32bit SSRAM to buffer packets

ü 4/8 K MAC address look up Table is supported

ü Address mapping of look up table can be linear or

use hash algorithm

ü Auto learning and filtering

ü Aging the look up table is supported optionally

ü Aging time can be 1min to 640 mins 7 steps

ü Three forwarding modes are supported : Store-

and-Forward, Fragment-Free and Auto Forward

which is based on network quality

ü Flow-control is supported optionally

ü 802.3x flow control is supported when running in

full-duplex mode

ü Back-pressure base flow control is supported

when running in half-duplex mode

ü Ext. Buffer Memory auto testing

ü Routing and Learning at wire speed (148800

packets/sec at 100Mbps)

•

LED display buffer utilization (%) for whole system

and external SSRAM test.

•

Power on LED diagnosis. All the LED display will

follow the “ON-OFF-ON-OFF-Normal” operation

procedure during/after power on reset

•

60MHz Operation, 3.3volt, 208-pin PQFP

Product description

The AX88615 is a 5-ports 10/100 Mbps Ethernet switch with MII PHY or RMII PHY. It is design for low cost dumb

Switch application, e.g. SOHO Ethernet Switch, with low cost 64K*32 SSRAM buffer memory.

Key Applications

ü

SOHO Ethernet Switch

ü

IP Router

System Block Diagram

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.

AX88615

Switch Controller

1 or 2 64K*32 SSRAM

1 Quad RMII/MII PHY

RMII/MII PHY for Down-link or Server

5 Port 10/100Mb SOHO Switch