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changes to these specifications at any time without notice Microcomputer Products may have minor variations to this specification known as errata

October 1995

COPYRIGHT

INTEL CORPORATION 1996

Order Number 290421-004

82503

DUAL SERIAL TRANSCEIVER (DST)

82503 PRODUCT FEATURE SET OVERVIEW

Y

Single Component Ethernet Interface

to Both 8023 10BASE-T and AUI

Y

Automatic or Manual Port Selection

Y

Manchester EncoderDecoder and

Clock Recovery

Y

No Glue Interface to Industry-Standard

LAN Controllers

Intel 82586 82590 82593 and 82596

AMD 7990 (LANCE )

National Semiconductor 8390 and

83932 (SONIC )

Western Digital 83C690

Fujitsu 86950 (Etherstar )

Y

Diagnostic Loopback

Y

Reset Low Power Modes

Y

Network Status Indicators

Y

Defeatable Jabber Timer

Y

User Test Modes

Y

10 MHz Transmit Clock Generator

Y

One Micron CHMOS

IV (Px48)

Technology

Y

Single 5-V Supply

INTERFACE FEATURES

TPE

Y

Complies with 10BASE-T IEEE Std

8023i-1990 for Twisted Pair Ethernet

Y

Selectable Polarity Switching

Y

Direct Interface to TPE Analog Filters

Y

On-Chip TPE Squelch

Y

Defeatable Link Integrity (LI)

Y

AUI

Y

Complies with IEEE 8023 AUI Standard

Y

Direct Interface to AUI Transformers

Y

On-Chip AUI Squelch

A block diagram of a typical application is shown in Figure 1 The 82503 Dual Serial Transceiver is a high-inte-

gration CMOS device designed to simplify interfacing industry standard Ethernet LAN Controllers to IEEE

8023 local area network applications (10BASE5 10BASE2 and 10BASE-T) The component supports both

an attachment unit interface (AUI) and a Twisted Pair Ethernet interface (TPE) It allows OEMs to design a

state-of-the-art media interface that is jumperless and fully automatic The 82503 includes on-chip AUI and

TPE drivers and receivers it offers designers a cost-effective integrated solution for interfacing LAN control-

lers to the wire medium

CHMOS is a patented process of Intel Corporation

Ethernet is a registered trademark of Xerox Corporation

LANCE is a registered trademark of Advanced Micro Devices

Etherstar is a registered trademark of Fujitsu Electronics

Sonic is a registered trademark of National Semiconductor Corporation