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MVTX2801AG Arkusz danych(PDF) 1 Page - Zarlink Semiconductor Inc |
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MVTX2801AG Arkusz danych(HTML) 1 Page - Zarlink Semiconductor Inc |
1 / 106 page 1 Zarlink Semiconductor Inc. Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc. Copyright 2003, Zarlink Semiconductor Inc. All Rights Reserved. Features • 4 Gigabit Ports with GMII and PCS interface - Gigabit Port can also support 100/10 Mbps MII interface • High Performance Layer 2 Packet Forwarding (11.904M packets per second) and Filtering at Full-Wire Speed • Maximum throughput is 4 Gbps non-blocking • Centralized shared-memory architecture • Consists of two Memory Domains at 133 MHz - Frame Buffer Domain: one bank of ZBT-SRAM with 1M/2MB total - Switch Database Domain with 256K/512K SRAM. • Up to 64K MAC addresses to provide large node aggregation in wiring closet switches 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 • QoS Support • Supports IEEE 802.1p/Q Quality of Service with 8 Priority • Buffer Management: reserve buffers on per class and per port basis October 2003 Ordering Information MVTX2801AG 596-pin HSBGA -40 °C to +85°C MVTX2801 Unmanaged 4-Port 1000 Mbps Ethernet Switch Data Sheet Figure 1 - Chip Block Diagram VTX2800 GMII /PCS Port 0 GMII /PCS Port 1 GMII /PCS Port 2 GMII /PCS Port 3 Management Module Frame Engine Search Engine Frame Data Buffer A ZBT-SRAM (1M/2MB) 64bit Serial / I2C Scheduler SDB Interface FDB Interface SW Databasee 32bit SRAM 256/512K MAC Table LED |
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