Supports eight 10/100 Mbits/s Ethernet ports with integrated 10/100Bas

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Supports eight 10/100 Mbits/s Ethernet ports with integrated 10/100Bas

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AL216 Advance Information 8-Port 10/100 Ethernet Switch with Integrated
Supports eight 10/100 Mbits/s Ethernet ports with integrated 10/100Base-T/-TX/FX Transceivers Scalable ports using four AL216 devices. Non-blocking ports Scalable design stackable switch implementation Capable trunking Mbits/s link Built-in storage media access control (MAC) addresses expandable Designed utilize low-cost SGRAM SDRAM expansion link supports Gbits/s throughput Gigabit Ethernet ready Automatic source address learning Serial EEPROM interface low-cost system configuration Secure mode traffic filtering Broadcast storm control Port monitoring support IEEE 802.3x flow control full-duplex operation. Optional backpressure flow control support half-duplex operation Supports store-and-forward mode switching VLAN support RMON SNMP support with external management (MIB) device 0.25 CMOS technology 388-pin package
AL216 highly integrated, scalable eight-port 10/100 switch/MAC/PHY Ethernet standard product. This device supports both fiber ports. targeted high performance low-cost desktop workgroup switches. AL216 uses 0.25 low-power CMOS achieve extremely low-power dissipation, operates from single power supply.
Buffer Manager
TP/FIBER TP/FIBER TP/FIBER TP/FIBER TP/FIBER TP/FIBER TP/FIBER TP/FIBER
10/100 10/100 10/100 10/100 10/100 10/100 10/100 10/100
10/100 10/100 10/100 10/100 10/100 10/100 10/100 10/100 High Speed Switch Fabric
Switch Controller
Address Control
Expansion Interface
Address Table
Address Table Expansion
EEPROM Interface Switch Controller
Figure
System Block Diagram
Reference Only Allayer Confidential
AL216 Advance Information
AL216 Overview
AL216 eight-port 10/100 Mbit/s dual-speed Ethernet switch with integrated 10/100 Mbit/s transceivers. Each port supports both Mbit/s Mbit/s data rate. operation mode auto-negotiated PHY. ports full-duplex capable. low-cost scalable solution 32-ports achieved through low-cost buffer memory architecture. interface Gbit/s interface (4.8 Gbit/s full-duplex). interface support four switch chips. Various system configurations achieved using family components. maximum port configuration will either 32-port Mbit/s ports 24-port Mbit/s plus Gigabit Ethernet ports. interface also supports external management device. SNMP RMON supported through this external management device. addition, AL216 also supports VLAN workgroup segment switching applications multiple-link aggregation trunks. trunking applications, chip provides optional load balancing schemes, explicit dynamic. With trunking, group four full-duplex links together form single Mbit/s link. AL216 provides flow-control methods. half-duplex operation, optional jamming based flow-control (also known backpressure) available prevent loss data. With this method flow-control, switch will generate signal when receive buffer full. sending station will transmit until line clear. full-duplex mode, AL216 utilizes IEEE 802.3x PAUSE frames flow-control mechanism. ports support multiple addresses. AL216 supports addresses internally. These addresses shared among eight ports. Additional SRAM added provide addresses support. initialization configuration switch programmed external EEPROM. unmanaged switch design, there need CPU. Field reconfiguration achieved using parallel interface reprogram EEPROM. managed switch applications, AL216 supports network management through network management option, AL300A. When management option enabled, network statistics each port gathered sent across ring. management information base chip will collect store data network management agent. Access statistic counters provided interface device. AL216 also supports port-based VLAN. VLAN register used configure destination ports multicast broadcast frames. device also provides levels security intrusion protection which implemented per-port basis. AL216 operates only store forward mode. entire frame checked errors. Frames with errors automatically filtered will forwarded destination port. Other features include port monitoring broadcast storm throttling.
2/2000
Reference Only Allayer Confidential

Supports eight 10/100 Mbits/s Ethernet ports with integrated 10/100Bas

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