VSC8221 データシートの表示（PDF） - Vitesse Semiconductor
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VSC8221
Vitesse Semiconductor
VSC8221 Datasheet PDF : 2 Pages
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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.
SPECIFICATIONS:
PARAMETER
TYP
PD
700
PDQ
100
L1G, L100M
150
Serial Data Rate
1.25
VDD
3.3
FTOL (REFERENCE)
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:
TDP
TDN
RDP
RDN
SCLKP
SCLKN
CMODE[3:0]
RESET
TXDIS/SRESET
802.3z
SerDes
OR TBI
SGMII
PCS
PCS
ENCODER
TBI
PAM-5 SYMBOL
MAPPER,
SCRAMBLER
Control
PCS
DECODER
PAM-5 SYMBOL
DE-MAPPER,
DESCRAMBLER
PMA (DSP Data Pump)
TX FIR
NC1 NC2 NC3
EC
TRELLIS
DECODER
+
FFE
X4
TIMING RECOVERY
MDI (Analog Front End)
DAC
HYBRID
ADC
VGA
TXVPA
TXVNA
TXVPB
TXVNB
TXVPC
TXVNC
TXVPD
TXVND
TDI
TDO
TMS
TCK
TRST
MODDEF1/MDC
MODDEF2/MDIO
RXLOS/SIGDET
PLLMODE/EECLK
EEDAT
TEST
MANAGER
+ JTAG
EEPROM and SERIAL
MANAGEMENT
INTERFACE
AUTO-NEGOTIATION
MII
REGISTERS
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.
PLL,
OSCILLATOR
BIASING,
SWITCHING
REGULATOR
LED
INTERFACE
CLKOUTMICRO
MODDEF0/CLKOUTMAC
XTAL2
XTAL1REFCLK
REFFILT
REFREXT
REGEN
REGOUT
LED0
LED1
LED2
741 Calle Plano
Camarillo, CA 93012, USA
Tel: +1 805.388.3700
Fax: +1 805.987.5896
www.vitesse.com
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