VSC8221
Single Port 10/100/1000BASE-T PHY with 1.25 Gbps SerDes for SFPs / GBICs
GENERAL DESCRIPTION:
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.
S P E C I F I C AT I O N S :
PARAMETER
P
D
P
DQ
L
1G
, L
100M
Serial Data Rate
VDD
F
TOL (REFERENCE)
TYP
700
100
150
1.25
3.3
25
UNIT
mW
mW
m
Gbps
V
MHz
COMMENTS
Steady state power consumption (1000BASE-T) including SerDes
Power consumption in ActiPHY™ power down mode
Cable link length supported in 1000BASE-T & 100BASE-TX modes,
SerDes, SGMII interface data rate
DC power supply voltage range
Crystal parallel resonant frequency (+/- 100 ppm tolerance)
BLOCK DIAGRAM:
802.3z
SerDes
OR
SGMII
TDP
TDN
RDP
RDN
SCLKP
SCLKN
TBI
PCS
PMA (DSP Data Pump)
MDI (Analog Front End)
TXVPA
TXVNA
PCS
ENCODER
TBI
PAM-5 SYMBOL
MAPPER,
SCRAMBLER
TX FIR
DAC
HYBRID
TXVPB
TXVNB
NC1
NC2
NC3
EC
CMODE[3:0]
RESET
TXDIS/SRESET
TXVPC
TXVNC
Control
PCS
DECODER
PAM-5 SYMBOL
DE-MAPPER,
DESCRAMBLER
TRELLIS
DECODER
+
X4
FFE
ADC
VGA
TXVPD
TXVND
TIMING RECOVERY
TDI
TDO
TMS
TCK
TRST
PLL,
OSCILLATOR
TEST
MANAGER
+ JTAG
EEPROM and SERIAL
MANAGEMENT
INTERFACE
AUTO-NEGOTIATION
BIASING,
SWITCHING
REGULATOR
MII
REGISTERS
LED
INTERFACE
CLKOUTMICRO
MODDEF0/CLKOUTMAC
XTAL2
XTAL1REFCLK
REFFILT
REFREXT
REGEN
REGOUT
MODDEF1/MDC
MODDEF2/MDIO
RXLOS/SIGDET
PLLMODE/EECLK
EEDAT
LED0
LED1
LED2
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
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.
741 Calle Plano
Camarillo, CA 93012, USA
Tel: +1 805.388.3700
Fax: +1 805.987.5896
www.vitesse.com
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
