Single Port 10/100/1000BASE-T PHY with 1.25 Gbps SerDes for SFPs / GBICs

VSC8221

The VSC8221 is the smallest, lowest power Gigabit Ethernet over copper PHY available and is ideal for

SFP/GBIC and Media Converter applications. It is the only triple speed copper SFP PHY to meet the stringent

MSA power consumption requirement of <1W for the entire module. Its integrated switching regulator

enables it to be powered by a single 3.3V power supply, reducing board space requirements and system cost.

Vitesse’s mixed signal and DSP architecture yields robust performance, supporting both full and half duplex

10BASE-T, 100BASE-TX, and 1000BASE-T over >140m of Category 5, unshielded twisted pair (UTP) cable, with

industry leading tolerance to NEXT, FEXT, Echo, and system noise.

SPECIFICA TIONS:

GENERAL DESCRIPTION:

741 Calle Plano

Camarillo, CA 93012, USA

Tel: +1 805.388.3700

Fax: +1 805.987.5896

www.vitesse.com

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.

BLOCK DIAGRAM:

PARAMETER

TYP

UNIT

COMMENTS

700

mW

Steady state power consumption (1000BASE-T) including SerDes

100

mW

Power consumption in ActiPHY™ power down mode

150

m

Cable link length supported in 1000BASE-T & 100BASE-TX modes,

Serial Data Rate

1.25

Gbps

SerDes, SGMII interface data rate

VDD

3.3

V

DC power supply voltage range

25

MHz

Crystal parallel resonant frequency (+/- 100 ppm tolerance)

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

AUTO-NEGOTIATION

PCS

DECODER

PCS

ENCODER

TIMING RECOVERY

+

DAC

HYBRID

VGA

ADC

FFE

PMA (DSP Data Pump)

PCSMDI (Analog Front End)

TX FIR

X4

NC1

NC2

NC3

EC

REFREXT

REFFILT

XTAL1REFCLK

XTAL2

TDP

TDN

TXDIS/SRESET

RDP

RDN

MODDEF1/MDC

MODDEF2/MDIO

RXLOS/SIGDET

802.3z

SerDes

OR

SGMII

RESET

EEPROM and SERIAL

MANAGEMENT

INTERFACE

TRELLIS

DECODER

PAM-5 SYMBOL

MAPPER,

SCRAMBLER

PAM-5 SYMBOL

DE-MAPPER,

DESCRAMBLER

TDI

TDO

TMS

TCK

TRST

TXVPA

TXVNA

TXVPB

TXVNB

TXVPC

TXVNC

TXVPD

TXVND

REGOUT

PLL,

OSCILLATOR

LED2

LED1

LED0

BIASING,

SWITCHING

REGULATOR

LED

INTERFACE

MII

REGISTERS

TEST

MANAGER

+ JTAG

TBI

TBI

MODDEF0/CLKOUTMAC

PLLMODE/EECLK

EEDAT

REGEN

CMODE[3:0]

SCLKP

SCLKN

CLKOUTMICRO

Control