VSC8601 and VSC8641

© 2007, 2009 by Vitesse Semiconductor Corporation. VPPD-01969 Revision 1.1. Vitesse Semiconductor Corporation ("Vitesse") retains the right to make changes to its products or

specifications. As such, all information in this document, including descriptions of features, functions, performance, technical specifications and availability, is subject to change

without notice at any time, and Vitesse assumes no responsibility for use of any information herein. Nothing contained herein conveys to the purchaser of microelectronic devices

any license under the patent or any other intellectual property rights of any manufacturer. Vitesse®, and numerous other trademarks, are trademarks of Vitesse in the United States

and/or other jurisdictions. Other trademarks used herein that are not the property of Vitesse are the property of their respective owners. While Vitesse products support IEC 60825,

use of Vitesse products does not ensure compliance to IEC 60825. Buyers are responsible for ensuring compliance to IEC 60825. Buyers must fully indemnify Vitesse for any

damages resulting from non-compliance to IEC 60825.

General Description

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.

VSC8641

LED Interface

10/100/

1000BASE-T

PCS

LED[3:0]

TXD[7:0]

TX_ER

RGMII/GMII

MAC

Interface

Jumbo Packet

FIFO

TXVPA

TXVNA

TXVPB

TXVNB

TXVPC

TXVNC

TXVPD

TXVND

PLL

JTAG

CMODE[4:0]

RESET

EECLK

Management and

Control Interface

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