MVTX2802 Datasheet, PDF (1/154 Pages) Zarlink Semiconductor Inc – Managed 4-Port 1000 Mbps Ethernet Switch

MVTX2802
Managed 4-Port 1000 Mbps
Ethernet Switch
Data Sheet
Features
• 4 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
• 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
• Provides Port based and ID Tagged VLAN
(IEEE802.1Q) up to 4K VLAN
• Support IP Multicast with IGMP snooping up to
64K groups.
October 2003
Ordering Information
MVTX2802AG 596 Pin HSBGA
-40°C to +85°C
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
Frame Data Buffer A
ZBT-SRAM (1M/2MB)
MVTX2802 ^64bit
FDB Interface
Frame
Engine
Scheduler
SRAM 256/512K
SW Database
MAC Table
32bit
SDB Interface
LED
Search
Engine
GMII
/PCS
Port 0
GMII
/PCS
Port 1
GMII
/PCS
Port 2
GMII
/PCS
Port 3
Management
Module
16/8bit-
Bus/
Serial
CPU
Figure 1 - MVTX2802AG Functional Block Diagram
1
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Copyright 2003, Zarlink Semiconductor Inc. All Rights Reserved.