MVTX2801 Datasheet, PDF (1/106 Pages) Zarlink Semiconductor Inc – Unmanaged 4-Port 1000 Mbps Ethernet Switch

MVTX2801
Unmanaged 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
• 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
October 2003
Ordering Information
MVTX2801AG 596-pin HSBGA
-40°C to +85°C
• 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
Frame Data Buffer A
ZBT-SRAM (1M/2MB)
VTX2800
64bit
FDB Interface
Frame
Engine
Scheduler
SRAM 256/512K
SW Databasee
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
Serial /
I2C
Figure 1 - Chip Block Diagram
1
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Copyright 2003, Zarlink Semiconductor Inc. All Rights Reserved.