MVTX2803 查看數據表（PDF） - Zarlink Semiconductor Inc

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MVTX2803

Unmanaged 8-Port 1000 Mbps Ethernet Switch

Zarlink Semiconductor Inc 

MVTX2803

Data Sheet

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 MVTX2803 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 11.904M 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 8 Gigabit Ethernet ports.

Two Frame Buffer Memory domains utilize cost effective, high–performance ZBT-SRAM with aggregated bandwidth

of 16Gbps 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.

The MVTX2803AG 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.

The MVTX2803AG is fabricated using 0.25µm technology. Inputs, however, are 3.3V tolerant and the outputs are

capable of directly interfacing to LVTTL levels. The MVTX2803AG is packaged in a 596-pin Ball Grid Array

package.

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Zarlink Semiconductor Inc.

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