O V ERVI EW

®

Phone: 949-450-8700

Fax: 949-450-8710

E-mail: info@broadcom.com

Web: www.broadcom.com

BROADCOM CORPORATION

16215 Alton Parkway, P.O. Box 57013

Irvine, California 92619-7013

© 2005 by BROADCOM CORPORATION. All rights reserved.

5482-PB00-R

4/29/05

Corporation and/or its subsidiaries in the United States and certain other countries. All other trademarks

mentioned are the property of their respective owners.

A member of Broadcom’s third generation of Gigabit Ethernet PHYs,

the BCM5482 consists of two complete 10/100/1000BASE-T Gigabit

Ethernet transceivers integrated on a single monolithic CMOS chip. The

BCM5482 is optimized for low power and small footprint size to reduce

design complexity for space-constrained IP phone applications. For 10/

100BASE-TX applications, the single package offers a compelling

advantage over two single devices for Gigabit uplinks.

The BCM5482 DSP-based architecture and advanced power

management techniques combine to achieve robust and low-power

operation over existing Category 5 twisted-pair wiring. The BCM5482

architecture not only meets the requirements of IEEE 802.3,

IEEE 802.3u, and IEEE 802.3ab, but also maintains the industry’s

highest level of margin over IEEE requirements for echo, near-end

crosstalk (NEXT), and far-end crosstalk (FEXT). With the industry's

lowest power at 600 mW per port, the BCM5482 assists in reducing the

power distribution requirements of IP phone systems. In addition, the

BCM5482 has extremely low EMI emissions, which reduces the design

constraints required to meet EMI radiation specifications.

The BCM5482 supports the RGMII, SGMII, and SerDes MAC

interfaces. The RGMII, SGMII, and serial SerDes inteerfaces are

reduced-pin-count (12, 6, and 4, respectively, versus 25) versions of the

GMII. The RGMII clock timing can be adjusted to eliminate the board

trace delays required by the RGMII specification. These reduced-pin-

count interfaces simplify design and lower system cost by reducing the

number of layers required for signal routing. In addition, these interfaces

allow fewer pins at the MAC/switch, which reduces the MAC/switch

cost by enabling smaller die sizes than would be possible with full GMII.

This device is another member of Broadcom’s 0.13-µm Gigabit Ethernet

copper PHY family, joining more than 25 other quad and single

products. The 0.13-µm process is the optimal process that offers the best

performance, lowest cost, and lowest power for Gigabit Ethernet copper

solutions. Broadcom continues to expand its leadership in 0.13-µm

technology with the BCM5482, part of its third generation of 0.13-µm

Gigabit Ethernet copper transceivers.

Each BCM5482 port is fully independent and has individual interface,

control, and status registers, and incorporates a number of advanced

features. This includes identifying physical wiring defects that the

BCM5482 cannot automatically correct for, and channel conditions such

as excessive cable length and return loss, crosstalk, echo, and noise.

Broadcom’s cable analyzer software can be used with the device to

provide remote management of the cable and a first level of diagnostics

and fault isolation.

The BCM5482 also has ESD tolerance that is well above typical industry

standards. This prevents ESD damage not only during manufacturing,

but also during CESD events in the field. The CESD is an ESD event that

occurs when an electrically charged network cable is plugged into a

network port. This is an issue becoming more prevalent with

contemporary cable installations. The BCM5482 can tolerate over 3 kV

of CESD.

TXD[3:0]{2:1}

TX_EN{2:1}

GTXCLK{2:1}

RX_DV{2:1}

RXD[3:0]{2:1}

RXC{2:1}

SGIN(1){2:1}

SCLK(1){2:1}

SGOUT(1){2:1}

MDC{2:1}

MDIO{2:1}

MODES

LED[2:1]{2:1}

SYMBOL ENCODER

SERIAL/SGMII

LED DRIVERS

MII REGISTERS

VOLTAGE

REGULATOR

BIAS GENERATOR

AUTO-

NEGOTIATION

TX DAC

ECHO

CANCELLER

FFE

ADC

PGA

TRD[3:0]{2:1}

XTAL1

XTAL0

RDAC

REGSUP[2:1]

REGCNTL[2:1]

REGSEN[2:1]

+

+

+

BASELINE

WANDER

CORRECTION

CLOCK

GENERATOR

TIMING AND PHASE

RECOVERY

XTALK

CANCELLER

DFE AND

TRELLIS

DECODER

MII MGMT

CONTROL

SYMBOL DECODER/

ALIGNER

+