ASIX ELECTRONICS CORPORATION First Released Date: 01/31/2002
4 F, NO. 8 , Hsin Ann Rd. , Science - based Industrial Park, Hsin - Chu City, Taiwa n, R.O.C.
TEL: 886 - 3 - 579 - 9500 FAX: 886 - 3 - 563 - 9 799 http://www.asix.com.tw

AX8865 5 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 - Serv ice 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
• Ful l - 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 2 7 MHz 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 feat ure 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 inter connect 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 overa ll 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 d esign.
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.