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www.vitesse.com

The VSC7280 is a Dual XAUI – Dual XGMII

Transceivers tailored for 10 Gigabit Ethernet

(10GbE) and 10 Gigabit Fibre Channel

(10GFC) applications. The feature set and

flexibility of these devices make them

perfectly suited for Backplane and other

Serial Interconnect applications such as Serial Rapid I/O, PCI

Express and XAUI.

With eight channels of serial transmitter/receiver pairs, these

transceivers can deliver a duplex data rate of greater than 40

Gbps. These serial channels can be configured for independent

operation, as two fully 10GbE/10GFC compliant XAUI (10 Gigabit

Attachment Unit Interface) serial buses, or a combination thereof.

The parallel bus is fully XGMII (10 Gigabit Media Independent

Interface) compliant. When independent channel operation is

required, the parallel bus can be configured for either 8- or 10-bit

operation with the ability to enable or bypass the internal 8B/10B

encoders/decoders.

No additional external logic is required for the basic operation of

these devices. However, for flexibility and systems adaptability,

an MDIO (Management Data Input/Output) interface is provided

for internal register access. These registers are MDIO compliant

and allow for monitoring and configuration of special modes for

diagnostics, BIST (Built-In-Self Test), and various control of

special channel features, such as pre-emphasis, cable

equalization, reduced output swing, loopback, signal detection

and XGMII/XAUI port selection.

The flexibility of this device is not only seen in the MDIO register

programmable feature set, but also in a wide range of supported

frequencies. With a serial data rate that can range from 0.95

Gbps to 3.25 Gbps, this device supports multiple communication

applications such as Fibre Channel, InfiniBand, and Ethernet. The

VSC7280 have the functionality to support these common rates

simultaneous with a single external reference clock.

Whether the application is a high-speed backplane, chassis-to-

chassis communication or an optical link, these devices can

provide the flexibility and reliability required in today’s high-end

Data Communication systems.

GENERAL DESCRIPTION:

Dual XAUI – Dual XGMII Octal 0.95 Gbps to 3.25 Gbps Transceiver

VSC7280

2GFC, 1GFC, and 1GbE Simultaneous Operation

APPLICA TIONS:

MODES OF OPERA TION:

The VSC7280 allow for flexibility in multiple systems

environments.

A or

B

Dual Port XAUI/XGMII

Port-to-Port Switch

- Any Combination, A-B ports

• Single Port XGMII-Dual XAUI

- Supervisor and Redundant XAUI

- Link Ready State Diagnostics

XAUI-B

XAUI-A

XGMII-B

XGMII-A

A or

B

•

--

-

XAUI

Retimer

•

-Through

Retimer/Switch

•

-up

XAUI-B

XAUI-A

XAUI

Retimer

XAUI Loop

XAUI

XGMII Bypass

Supervisor

High Speed Signal Clean

-

-

-

XGMII-B

XGMII-A

10 Gigabit Ethernet Port Application

• Driving out-of-box optics or backplane

XENPAK

Optical Module

Backplane

Interconnect

10GE MAC(s),

10GE Switch,

and/or

Switch Fabric(s)

XGMII

XAUI-B

XAUI-A

VSC7280

SerDes

Transceiver

XENPAK

Optical Module

Backplane

Interconnect

10GE MAC(s),

10GE Switch,

and/or

Switch Fabric(s)

10GbE and 10GFC Simultaneous Operation

10GbE

Operation

XAUI-B

XAUI-A

XGMII-B

XGMII-A

10GFC

Operation

2x2.125Gbps

2-lane FC

2-lane FC

4-lane GbE

2x1.06Gbps

4x1.25Gbps

2x2.125G

2x1.06G

4x1.25G

Vitesse, ASIC-Friendly, FibreTimer, TimeStream and Snoop Loop are trademarks 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.

For more information on Vitesse Products visit the Vitesse web site

at www.vitesse.com or contact Vitesse Sales at (800) VITESSE

or sales@vitesse.com