Trademarks

TM

Vitesse, ASIC-Friendly, FibreTimer, TimeStream, Snoop Loop, Super FEC, FOCUSConnect, Meigs-II, Meigs-IIe, Lansing, Campbell-I, Barrington,

PaceMaker, HOVCAT48, HOVCAT48e, HOVCAT192, HOVCAT192e, Micro PHY, FOCUS32, FOCUS16, IQ2200, NexSAS, VersaCAT, GigaStream, HawX,

SparX, StaX, VstaX, SimpliPHY,VeriPHY, ActiPHY, XFP PRO, SFP PRO, Smart-LINK, OctalMAC, EQ Technology are trademarks in the United States and/or

other jurisdictions 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. While the information furnished herein is held to be accurate and reliable, no responsibility will be assumed by

Vitesse for its use. Furthermore, the information contained herein does not convey to the purchaser of microelectronic devices any license under the patent

right of any manufacturer.

Copyright © 2007

741 Calle Plano

Camarillo, CA 93012, USA

Tel: +1 805.388.3700

Fax: +1 805.987.5896

www.vitesse.com

sales@vitesse.com

VSC8601, VSC8641

VSC8641

LED Interface

10/100/

1000BASE-T

PCS

LED[3:0]

TXD[7:0]

TX_ER

R/GMII

MAC

Interface

Jumbo Packet

FIFO

TXVPA

TXVNA

TXVPB

TXVNB

TXVPC

TXVNC

TXVPD

TXVND

PLL

JTAG

CMODE[4:0]

RESET

EECLK

EEDAT

MDINT

MDIO

MDC

MDI

Twisted Pair

Interface

10/100/

1000BASE-T

PMA

REF_FILT

REF_REXT

TX_CLK

Power Regulation

REG_OUT

REG_EN

SRESET

MDI Reference

GTX_CLK

TX_EN

RXD[7:0]

RX_ER

RX_CLK

RX_DV

COL

CRS

CLKOUT

XTAL1

XTAL2

Management

and Control

Interface

GENERAL DESCRIPTION:

BLOCK DIAGRAM:

Designed for high-performance, low-power, and

low-cost Gigabit Ethernet, the VSC8601 and

VSC8641 are the industry’s lowest-power and most

highly integrated Gigabit Ethernet (GbE) PHYs. The

VSC8601 is optimized for Gigabit LAN on

Motherboard (GLOM) and Gigabit Ethernet switch

applications, while the VSC8641 is optimized for Gigabit Ethernet Passive

Optical Network (GE-PON) applications.

The devices feature integrated, line side termination to simplify PCB

design, maximize board space, and create a cleaner, higher-performance

product. To further reduce complexity, component count, and system cost,

they include an internal 1.2 V power regulator that operates on a single

3.3 V supply. Additionally, integrated RGMII timing compensation

eliminates the need for on-board delay lines.

Vitesse’s mixed signal and digital signal processing (DSP) architecture

assures robust performance. It supports both half-duplex and full-duplex

10BASE-T, 100BASE-TX, and 1000BASE-T communication speeds over

Category 5 (Cat5) unshielded twisted pair (UTP) cable at distances greater

than 140 m, displaying excellent tolerance to NEXT, FEXT, echo, and other

types of ambient environment and system electronic noise.

VSC8601 — 10/100/1000BASE-T PHY with RGMII MAC Interface

VSC8641 — 10/100/1000BASE-T PHY with RGMII and GMII MAC Interface