AX88655 AB
5-Port 10/100/1000BASE-T Ethernet Switch
5-Port Gigabit Ethernet Switch with Embedded Memory
Document No.: AX88655AB / V0.8 / June 11, 2003
Features
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5-port Gigabit Ethernet switch integrating MACs,
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Programmable aging mechanism for the two-way
4K MAC addresses table
Two hashing schemes: direct and XOR mode.
Support ingress port security mode, incoming
packets with unknown source MAC address could
be dropped
Egress/Ingress Port Mirroring for Sniffer function.
Flow control
- Full-duplex IEEE 802.3x flow control
- Half-duplex back pressure flow control
- Optional smart flow control for mix-speed
connection
packet buffer memory and switching engine with
RGMII/GMII/MII interface
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RGMII support REV 1.3 with 3.3V IO
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
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Store-and-forward operation support
Performs full wire-speed switching with Head of
Line (HOL) blocking prevention
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Supports port-based trunking for high-bandwidth
links
Provides 5 GPIO ports
Provides EEPROM interface for auto-configuration
System clock input is one 25MHz Crystal and one
125MHz from PHY GCLK output
1.8 and 3.3V operations
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Supports up to 8 Port-based VLAN Groups
Supports broadcast storm filtering.
Quality-of-Service provisioning on 802.1P tag and
port-pairs with two priority queues
By-port Egress/Ingress bandwidth (rate) control
Embedded 128K Byte SRAM for packet buffer
Supports packet length up to 1522 bytes
Supports 9K/12K byte JUBMO packet
Integrated two-way Address-Lookup engine and
table for 4K MAC addresses
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3.3 I/Os and packaged in 272-pin BGA
Product Description
The AX88655AB is an 5-port 10/100/1000 Mbps Ethernet switch with, GMII/RGMII 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 AX88655AB 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 AX88655AB Switches are below.
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Simplicity
Provides a smart, simple and low maintenance plug-and-play network interconnect system for small to
medium size businesses
Flexibility
Highly scalable configuration allows system manufacturers to enable or disable a range of features to best
meet their target price point.
Integration
Highly integrated design drives down overall switch manufacturing costs.
Target Applications
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5-port Gigabit Layer 2 Switches for workgroup
High-port count Layer 2 switches with trunking
High performance solution of Ethernet backbone
ASIX ELECTRONICS CORPORATION
4F, NO.8, Hsin Ann Rd., Science-based Industrial Park, Hsin-Chu City, Taiwan, R.O.C.
First Released Date: 11/07/2002
TEL: 886-3-579-9500
FAX: 886-3-563-9799
http://www.asix.com.tw
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