AL103
Revision 1.0
8 PORT LOW COST 10/100 SWITCH
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Supports 8 10/100 Mbit/s MII ports
Capable of trunking up to 800 Mbit/s link
Trunk fail-over feature
Full- and half-duplex mode operation
Speed auto-negotiation through MDIO
Built-in storage of 1K MAC addresses
Design to utilize low-cost SGRAM
Serial EEPROM interface for low-cost
system configuration
Automatic source address learning
Secure mode traffic filtering
Broadcast storm control
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Port monitoring support
IEEE 802.3x flow control for full-duplex
operation
Optional backpressure flow control sup-
port for half-duplex operation
Supports store-and-forward mode
switching
VLAN support
AL102A pin compatible
3.3V operation
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Packaged in 256-pin PQFP
Product Description
The AL103 is an eight-port 10/100 Mbit/s dual speed Ethernet switch. A low-cost Fast Ethernet
switch can be implemented using the AL103 with low-cost SGRAM. The AL103 also supports
VLAN and multiple port aggregation trunks.
10/100 MAC
10/100 MAC
Switch
Controller
Buffer
Manager
10/100 MAC
10/100 MAC
Address
Control
High Speed
Switch Fabric
10/100 MAC
Address
Table
10/100 MAC
10/100 MAC
EEPROM
Interface
10/100 MAC
Figure 1
System Block Diagram
Reference Only / Allayer Communications
ABC [ ABC Taiwan Electronics Corp ]
