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MVTX2802 Folha de dados(PDF) 3 Page - Zarlink Semiconductor Inc |
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MVTX2802 Folha de dados(HTML) 3 Page - Zarlink Semiconductor Inc |
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3 / 154 page  MVTX2802 Data Sheet 3 Zarlink Semiconductor Inc. Description The MVTX2800 family is a group of 1000 Mbps non-blocking Ethernet switch chips with on-chip address memory. A single chip provides a maximum of eight 1000 Mbps ports and a dedicated CPU interface with a 16/8-bit bus for managed and unmanaged switch applications. The MVTX2800 family consists of the following four products: • MVTX2804 8 Gigabit ports Managed • MVTX2803 8 Gigabit ports Unmanaged • MVTX2802 4 Gigabit ports Managed • MVTX2801 4 Gigabit ports Unmanaged The MVTX2802AG supports up to 64K MAC addresses to aggregate traffic from multiple wiring closet stacks. The centralized shared-memory architecture allows a very high performance packet-forwarding rate of 5.952M packets per second at full wire speed. The chip is optimized to provide a low-cost, high performance workgroup, and wiring closet, layer 2 switching solution with 4 Gigabit Ethernet ports. One Frame Buffer Memory domains utilize cost effective, high–performance ZBT-SRAM with aggregated bandwidth of 8.5Gbps to support full wire speed on all external ports simultaneously. With Strict priority, Delay Bounded, and WRR transmission scheduling, plus WRED memory congestion scheme, the chip provides powerful QoS functions for convergent network multimedia and mission-critical applications. The chip provides 8 transmission priorities and 2 level drop precedence. Traffic is assigned its transmission priority and dropping precedence based on the frame VLAN Tag priority or DS/TOS fields in IP packets. IP multicast snooping provides up to 64k simultaneous IP Multicast groups. With 4K IEEE 802.1Q VLANs, the MVTX2802AG provides the ability to logically group users to control multicast traffic. The MVTX2802AG supports port trunking/load sharing on the 1000 Mbps ports with fail-over capability. The port trunking/load sharing can be used to group ports between interlinked switches to increase the effective network bandwidth. In full-duplex mode, IEEE 802.3x flow control is provided. The Physical Coding Sublayer (PCS) is integrated on- chip to provide a direct 10-bit GMII interface, or the PCS can be bypassed to provide an interface to existing fiber- based Gigabit Ethernet transceivers. Statistical information for Etherstat SNMP and Remote Monitoring Management Information Base (RMON MIB) are collected independently for each of the four ports. Access to these statistical counter/registers is provided via the CPU interface. SNMP Management frames can be received and transmitted via the CPU interface, creating a complete network management solution. The MVTX2802AG is fabricated using 0.25 µm technology. Inputs, however, are 3.3V tolerant and the outputs are capable of directly interfacing to LVTTL levels. The MVTX2802AG is packaged in a 596-pin Ball Grid Array package. |
Nº de peça semelhante - MVTX2802 |
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Descrição semelhante - MVTX2802 |
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