MVTX2804中文资料ZARLINK数据手册PDF规格书

描述 Description

The MVTX2800AG family is a group of 8-port 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.

特性 Features

• 8 Gigabit Ports with GMII and PCS interface

- Gigabit Port can also support 100/10 Mbps MII interface

- Provide Hot plug support for GMII/PCS module

- 2 Gigabit ports can be aggregated into 2Gbps Stacking port working with VTX2600 in stacking mode

• High Performance Layer 2 Packet Forwarding (11.904M packets per second) and Filtering at Full-Wire Speed

• Maximum throughput is 8 Gbps non-blocking

• Centralized shared-memory architecture

• Consists of two Memory Domains at 133 MHz

- Frame Buffer Domain: Two banks of ZBT-SRAM with 2M/4MB total

- Switch Database Domain with 256K/512K SRAM

• Up to 64K MAC addresses to provide large node aggregation in wiring closet switches

• Provides Port based and ID Tagged VLAN (IEEE802.1Q) up to 4K VLAN

• Support IP Multicast with IGMP snooping up to 64K groups.

• Traffic Classification

• Classify traffic into 8 transmission priorities per port

• Supports Delay Bounded, Strict Priority, and WFQ

• Provides 2 level dropping precedence with WRED mechanism

- User controlled thresholds for WRED

• Classification based on layer 2, 3 markings

- VLAN Priority field in VLAN tagged frame

- DS/TOS field in IP packet

• The precedence of above two classifications can be programmable