Supports eight 10/100 Mbit/s Ethernet ports with RMII interface Capabl

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Supports eight 10/100 Mbit/s Ethernet ports with RMII interface Capabl

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AL116 Advance Information Port 10/100 Mbit/s Dual Speed Fast Ethernet Switch
Supports eight 10/100 Mbit/s Ethernet ports with RMII interface Capable trunking Mbit/s link Full- half-duplex mode operation Speed auto-negotiation through MDIO Built-in storage addresses expandable Designed utilize low-cost SGRAM Scalable design stackable switch implementation expansion link supports Gbit/s throughput Serial EEPROM interface low-cost system configuration Gigabit Ethernet ready Automatic source address learning 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 0.35 micron, 3.3V CMOS technology Packaged 456-pin
AL116 eight-port 10/100 Mbit/s dual speed Ethernet switch. low-cost scalable solution ports achieved through using low-cost buffer memory Allayer's proprietary architecture. addition, AL116 supports VLAN multiple-link aggregation trunks.
10/100 Switch Controller Buffer Manager
10/100 Expansion Interface
10/100 High Speed Switch Fabric
Address Control
10/100
10/100
Address Table
Address Table Expansion
10/100 EEPROM Interface Management Information 10/100
10/100
Figure
System Block Diagram
Reference Only Allayer Confidential
AL116 Advance Information
AL116 Overview
interface Gbit/s interface (4.8 Gbit/s full-duplex). interface support four switch chips. Various combinations used different configurations. maximum port configuration will either 32-100 Mbit/s ports 24-100 Mbit/s ports plus two-Gigabit Ethernet ports. interface also supports external management device, AL300A. SNMP RMON supported through this external management device. AL116 provides eight 10/100 Mbit/s Ethernet ports. Each port supports both Mbit data rate. operation mode auto-negotiated PHY. ports full-duplex capable. device also supports VLAN workgroup segment switching applications. AL116 also supports trunking applications. chip provides optional load balancing schemes, explicit dynamic. With trunking, possible group four full-duplex links together form single Mbit/s link. Data received from interface stored external memory buffer. AL116 utilizes cost effective SGRAM provide 8-Mbit 16-Mbit buffer memory. During transmission, data obtained from buffer memory routed destination port. half duplex operation, event collision, control will back retransmit accordance IEEE 802.3 specification. AL116 provides flow-control methods. half-duplex operations, 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, AL116 utilizes IEEE 802.3x flow-control mechanism. ports support multiple addresses. switch chip supports addresses internally. These addresses shared among eight ports. Additional SRAM added provide support addresses. initialization configuration switch programmed external EEPROM. unmanaged switch design, there need CPU. Field reconfiguration achieved using parallel interface reprogram EEPROM. managed switch applications, AL116 supports network management through network management option. When management option enabled, network statistics each port gathered sent across bus. management information base chip will collect store data network management agent. Access statistical counters provided interface device. AL116 supports port based VLAN. VLAN register used configure destination ports multicast broadcast frames. AL116 operates only store forward mode. entire frame checked error. Frames with errors automatically filtered will forwarded destination port. device also provides levels security intrusion protection which implemented port basis. Other features include port monitoring broadcast storm throttling.
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Reference Only Allayer Confidential

Supports eight 10/100 Mbit/s Ethernet ports with RMII interface Capabl

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