VITESSE VSC7145 Datasheet

Dual Speed 10-bit Serializer/Deserializer

Storage

Communication

Products

Features and Benefits

• Dual Speed Operation:

- Fibre Channel: 1.06/2.12 Gb/s

- Gigabit Ethernet: 1.25 Gb/s

- InfiniBand

• 10-bit, SSTL_2 or SSTL_3

Interface

• HSPI Interface Compliant

• ASIC-Friendly

Transmitter

: 2.5 Gb/s

Timing to the

VSC7145

Product Brief

• Separate Transmitter/Receiver

Rate Controls support Auto Speed Negotiation

• No Passives needed on High

Speed Signals

• On-chip, 100 Ohm Termination

• Write Pre-Emphasis in

Transmitter

• Cable Equalization in Receiver

• Analog/Digital Signal Detection

• Flexible Reference Clock

• Single 3.3V Supply , 800mW

• 64-pin, 14 mm PQFP Package

• Pin Compatible to Agilent

HDMP-263x

General Description

The VSC7145 is a dual-speed Fibre Channel, Gigabit Ethernet and InfiniBand Serializer/Deserializer (SerDes) optimized for performance and power in an industry-standard pinout. It accepts 10-bits of SSTL, 8B/ 10B encoded transmit data, latches it synchronously to the Transmit Byte Clock (TBC) and serializes it onto the SO differential output at a baud rate which is 10, 20 or 40 times the REFCLK frequency. The VSC7145 samples serial receive data on the SI input, recovers the clock and data, deserializes it onto a 10-bit SSTL bus and outputs two recovered clocks at

or 1/20th of the baud rate. Both

1/10 disparities of the K28.5 characters are

detected and used for aligning the serial data to the parallel output bus. Independent speed selectors control the transmitter and receiver separately to support industry-standard automatic speed negotiation protocols. A combined analog/digital signal detect circuit indicates the presence of valid signal levels on the SI input. The VSC7145 contains on-chip PLL circuitry for synthesis of the bit rate transmit clock, and extraction of the clock from the received serial stream. The parallel bus of the VSC7145 is compliant with the High Speed Parallel Interface (HSPI) standard developed by the T11.2 Fibre Channel Committee.

www.vitesse.com

InfiniBand ASIC-FriendlyTM is a trademark of Vitesse Semiconductor Corporation

TM/SM

is a trademark and service mark of the InfiniBand Trade Association

Dual Speed 10-bit Serializer/Deserializer

SI+ SI-

R(0:9)

COMDET

ENCDET

T(0:9)

SO+ SO-

EWRAP

RBC0 RBC1

REFCLK1

RX_LOS

TBC

TXRATE

RXRATE

RBCSYNC

REFCLK0

REFRATE

EQAMP

Q D

D QD Q

TXC P1

TXCAP0

0.1uF

Serial to

Parallel

to Serial

Clock

Multiplier

x10/x20/x40

Comma

Detect

Clock

Recovery

Signal Detect

Product Brief

Specifications

• Data Rate: 1.0 - 2.5 Gb/s

• REFCLK: 52.5 to 126 MHz

• Frequency Offset: +/-200 ppm

• Fast Locking: <300 data edges

• Transmitter Output: 1.0V p-p

Minimum

• Receiver Input: 200mV p-p

Minimum

VSC7145

Storage

Communication

Products

VSC7145 Block Diagram

• 3.3V +/- 5% Supply

• 0° - 70°C Ambient Operation

Applications

• Fibre Channel

-Host Adapters

-Hubs/Switches

-RAID systems

• Gigabit Ethernet

-NICs

-Switches

-Proprietary Uplinks

• InfiniBand

-Host Channel Adapters

-Target Channel Adapters

-Switches

• Proprietary Serial Links

www.vitesse.com

Dual Speed Auto Negotiation Fibre Channel Application

VSC7145

T(0-9) TBC EN_CDET EWRAP

106.25 MHz

OSCILLATOR

TXRATE

R(0:9) RXRATE

RBC0 RBC1 RX_LOS COMDET REFRATE RBCSYNC

REFCLK

1.05 - 1.26

(Half Speed)

or 2.10 - 2.52

(Full Speed)

Protocol

Controller

Product Options

Part Number Low Speed I/O Speed (Gb/s) HS Termination Compatibility

VSC7145RU-30

VSC7145RU-31 VSC7145RU-34

SSTL_2 SSTL_3

SSTL_2

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

1.06 / 2.12 Gb/s Link

SO+

SO-

CAP0

CAP1

SI+

SI-

Optical

0.1uF

GBIC

100 Ohms

and the Vitesse logo

Agilent HDMP-2630 Agilent HDMP-2631

Agilent HDMP-2634

are all registered trademarks

of Vitesse Semiconductor Corporation