VSC8234 Datasheet, PDF (2/2 Pages) Vitesse Semiconductor Corporation – 10/100/1000BASE-T PHY with SGMII and SerDes MAC Interfaces

VSC8234
10/100/1000BASE-T PHY with SGMII and SerDes MAC Interfaces
GENERAL DESCRIPTION:
The VSC8234 is the industry’s smallest, lowest power quad port Gigabit Ethernet transceiver for multi-port
SGMII and SerDes switch and router applications. The VSC8234’s power consumption is 30% lower than
the next best competitor. Its serial MAC interface reduces pin count requirements by 66% (over RGMII) to
83% (over GMII). The device’s compact 19mm x 19mm BGA package makes it ideal for the highest-density
SGMII and SerDes switch applications. 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
PD
Serial Data Rate
VDD I/O
VDDA
VDDDIG
F_{TOL (REFERENCE)}
TYP
<640
1.25
3.3, 2.5, 1.5
3.3
1.2
25
UNIT
mW
Gbps
V
V
V
MHz
COMMENTS
Steady state power consumption per port
SerDes, SGMII interface data rate
I/O power supply voltage options
Analog supply voltage
Core power supply voltage
Crystal parallel resonant frequency (+/- 100ppm tolerance)
BLOCK DIAGRAM:
TDP_n
TDN_n
RDP_n
RDN_n
SIGDET_n
SerDes
SGMII
or
Serial
I/O
PCS
PCS
ENCODER
PAM-5 SYMBOL
MAPPER,
SCRAMBLER
PMA (DSP Data Pump)
TX FIR
NC1
NC2
NC3
EC
PCS
DECODER
PAM-5 SYMBOL
DE-MAPPER,
DESCRAMBLER
TRELLIS
DECODER
4
+
FFE
X4
TIMING RECOVERY
MDI (Analog Front End)
DAC
HYBRID
Port 3
Port 2
Port 1
Port 0
ADC
VGA
TXVP_A_n
TXVN_A_n
TXVP_B_n
TXVN_B_n
TXVP_C_n
TXVN_C_n
TXVP_D_n
TXVN_D_n
CMODE[7:0]
RESET
SOFT_RESET
MDC
MDIO
MDINT_n
EEDAT
EECLK
CONTROL
MANAGEMENT
INTERFACE
JTAG
TEST
MANAGER
For more information on Vitesse Products visit the Vitesse web site
at www.vitesse.com or contact Vitesse Sales at (800) VITESSE
or [e-mail]
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.
SYSTEM
LED INTERFACE
XTAL1/2
REF_FILT
REF_REXT
CLK125_MAC
CLK125_micro
LED[4:0]_n
741 Calle Plano
Camarillo, CA 93012, USA
Tel: [phone]
Fax: [phone]
www.vitesse.com