ETHERNET PRODUCTS
VSC8244
Quad Port 10/100/1000BASE-T PHY with RGMII / RTBI MAC Interfaces
Copper Media
+1.2 V
10/100/1000 Mbps
Ethernet MAC
10/100/1000 Mbps
Ethernet MAC
10/100/1000 Mbps
Ethernet MAC
10/100/1000 Mbps
Ethernet MAC
MDC, MDIO
Management
Interface
MDINT#_n
Serial I/F
Optional
EEPROM
RGMII, RTBI
+3.3 V
Magnetics
VSC8244
Quad
10/100/1000BASE-T
Transceiver
RJ-45
Magnetics
Magnetics
RJ-45
RJ-45
Magnetics
RJ-45
F E AT U R E S :
Lowest Power Consumption in the Industry at Less Than 640m W/port
(1000BASE-T mode)
Patented, Low EMI Line Driver with Integrated Line Side Termination
Resistors
Supports RGMII v1.3 (2.5V & 3.3V) & v2.0 (1.5V HSTL), 1.8V (SSTL
Compatible)
User-programmable RGMII Timing Compensation
Compliant with IEEE 802.3 (10BASE-T, 100BASE-TX, 1000BASE-T)
Specifications
>10kB Jumbo Frame Support with Programmable Synchronization FIFOs
Five Direct Drive LEDs with On-chip Filtering Interface Option
Serial LED Interface Option
Three User Configuration Options: 1) Optional Serial EEPROM,
2) Hardware Configuration Pins, or 3) Serial Management Interface (SMI)
Full Suite of BIST, MAC, and Far-end Loopback Modes
VeriPHY™ Link Cable Diagnostics Software Suite
Automatic Detection and Correction of Cable Pair Swaps, Pair Skew and
Pair Polarity, Along with HP Auto MDI/MDI-X Crossover Function
Manufactured in Advanced 0.13µm, 3.3V/1.2V Digital CMOS Process
BENEFITS:
Eliminates Heatsinks and Fans for Gigabit to the Desktop LAN Switches
Removes 576 Passive Components in 48-port Switch Applications
Compatible with a Wide Variety of Parallel I/F Switch ICs
Simplifies PCB Layout; Eliminates PCB Trombones
Ensures Seamless Deployment Throughout Copper Networks with Industry’s
Highest Tolerance to Noise and Substandard Cable Plants
Provides for Maximum Jumbo Frame Sizes in Custom SAN and LAN Systems
Eliminates External Components and EMI Issues
Provides Maximum System Design Flexibility
Offers Design Engineer a Solution to Fit any Unmanaged or Managed
System Requirement
Simplifies Comprehensive In-system Test to Ensure the Highest Product
Quality
Enables Network Manufacturers to Simplify Deployment and Improve
Network Management Capabilities of Gigabit Ethernet Links
Compatible with 1st Generation 1000BASE-T PHYs; Supports Auto
MDI/MDI-X Even when Autonegotiation is Disabled
Most Cost Effective Technology Eliminates More Expensive Analog
Process Variants
A P P L I C AT I O N S :
High Density 10/100/100BASE-T LAN & MAN Switches and Routers
Workgroup LAN Switches and Routers
PICMG 2.16 and 3.0 Backplane Applications
Gigabit Ethernet-based SAN, NAS, and MAN Systems
High Performance Workstations and Multi-port Server NICs
PB-VSC8244-002
VSC8244
Quad Port 10/100/1000BASE-T PHY with RGMII / RTBI MAC Interfaces
GENERAL DESCRIPTION:
The VSC8244 is the industry’s smallest, lowest power quad port Gigabit Ethernet transceiver for low-cost
RGMII and RTBI switch and router applications. In 1000BASE-T mode, the VSC8244’s power consumption
is 30% lower than the next best competitor. The device’s compact 19mm x 19mm BGA package is ideal for
high-density 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.
S P E C I F I C AT I O N S :
PARAMETER
P
D
VDD I/O
VDDA
VDDDIG
F
TOL (REFERENCE)
TYP
<640
3.3, 2.5, 1.5
3.3
1.2
25
UNIT
mW
V
V
V
MHz
COMMENTS
Steady state power consumption per port
I/O power supply voltage options
Analog supply voltage
Core power supply voltage
Crystal parallel resonant frequency (+/- 100ppm tolerance)
BLOCK DIAGRAM:
PCS
Interface Selection and Autonegotiation
PMA (DSP Data Pump)
MDI (Analog Front End)
Port 3
Port 2
Port 1
Port 0
PCS
ENCODER
PAM-5 SYMBOL
MAPPER,
SCRAMBLER
TX FIR
DAC
HYBRID
TXVP_A_n
TXVN_A_n
TXVP_B_n
TXVN_B_n
TXVP_C_n
TXVN_C_n
TXVP_D_n
TXVN_D_n
TXD[3:0]_n
TX_CTL_n
TX_CLK_n
RXD[3:0]_n
RX_CTL_n
RX_CLK_n
MAC I/F
NC1
NC2
NC3
EC
RGMII
or
RTBI
PCS
DECODER
PAM-5 SYMBOL
DE-MAPPER,
DESCRAMBLER
TRELLIS
DECODER
4
+
X4
FFE
ADC
VGA
TIMING RECOVERY
CMODE[7:0]
RESET
SOFT_RESET
XTAL1/2
CONTROL
JTAG
TEST
MANAGER
MANAGEMENT
INTERFACE
SYSTEM
REF_FILT
REF_REXT
CLK125
MAC
CLK125
micro
MDC
MDIO
MDINT_n
EEDAT
EECLK
TDI
LED INTERFACE
LED[4:0]_n
TMS
TDO
TCK
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.
TRST
741 Calle Plano
Camarillo, CA 93012, USA
Tel: +1 805.388.3700
Fax: +1 805.987.5896
www.vitesse.com
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