Trademarks

TM

Vitesse, ASIC-Friendly, FibreTimer, TimeStream, Snoop Loop, Super FEC, FOCUSConnect, Meigs-II, Meigs-IIe, Lansing, Campbell-I, Barrington,

PaceMaker, HOVCAT48, HOVCAT48e, HOVCAT192, HOVCAT192e, Micro PHY, FOCUS32, FOCUS16, IQ2200, NexSAS, VersaCAT, GigaStream, HawX,

SparX, StaX, VstaX, SimpliPHY, VeriPHY, ActiPHY, XFP PRO, SFP PRO, Smart-LINK, OctalMAC, EQ Technology are trademarks in the United States

and/or other jurisdictions of Vitesse Semiconductor Corporation. All other trademarks or registered trademarks mentioned herein are the property of their

respective holders.

Vitesse Semiconductor Corporation (“Vitesse”) retains the right to make changes to its products or specifications to improve performance, reliability or

manufacturability. All information in this document, including descriptions of features, functions, performance, technical specifications and availability, is

subject to change without notice at any time. While the information furnished herein is held to be accurate and reliable, no responsibility will be assumed by

Vitesse for its use. Furthermore, the information contained herein does not convey to the purchaser of microelectronic devices any license under the patent

right of any manufacturer.

Copyright © 2007

741 Calle Plano

Camarillo, CA 93012, USA

Tel: +1 805.388.3700

Fax: +1 805.987.5896

www.vitesse.com

sales@vitesse.com

VSC7344 and VSC7346

SPI-4.2

or XAUI

NPU or

ASIC

24× 1GbE Line Card

20×

SGMII

4×

SerDes

Switch

Fabric

SFP Module

SFP Module

SFP Module

SFP Module

Barrington-II

VSC7344

VSC7346

Octal Cu PHY

Octal Cu PHY

Quad Cu PHY

GENERAL DESCRIPTION:

APPLICA TION DIAGRAM:

APPLICA TIONS:

Ethernet L2/L3 switches and routers

Ethernet aggregation

Ethernet over SONET

Ethernet over DWDM

Security appliances

Storage networks

Barrington-II (VSC7344) is an advanced Ethernet

MAC containing 24 10/100/1000 Ethernet ports with

integrated

SGMII

and

100/1000

optical

serializers/deserializers. The host interface can be

configured as SPI-4.2, one XAUI, or two XAUI

interfaces. Each SPI-4.2 and XAUI host interface

uses a SPI-4.2 status channel for flow control. To support the high

oversubscription factor, the Barrington-II has a set of advanced QoS

features.

When using the SPI-4.2 host interface, both XAUI ports are available for

use as 10 gigabit Ethernet line ports.

In addition to Barrington-II, Vitesse offers Schaumburg-II (VSC7346), an

advanced Ethernet MAC containing 12 10/100/1000 Ethernet ports. It has

the same features and functionality as Barrington-II.

Barrington-Il™ — 24 × 10/100/1000 and 2 × 10G Ethernet MAC with SPI-4.2 and XAUI Host Interfaces

Schaumburg-Il™ — 12 × 10/100/1000 and 1 × 10G Ethernet MAC with SPI-4.2 and XAUI Host Interfaces