*Other brands and names are the property of their respective owners.
Information in this document is provided in connection with Intel products. Intel assumes no liability whatsoever, including infringement of any patent or
copyright, for sale and use of Intel products except as provided in Intel’s Terms and Conditions of Sale for such products. Intel retains the right to make
changes to these specifications at any time, without notice. Microcomputer Products may have minor variations to this specification known as errata.
October 1995COPYRIGHT
©
INTEL CORPORATION, 1996 Order Number: 290421-004
82503
DUAL SERIAL TRANSCEIVER (DST)
82503 PRODUCT FEATURE SET OVERVIEW
Y
Single Component Ethernet* Interface
to Both 802.3 10BASE-T and AUI
Y
Automatic or Manual Port Selection
Y
Manchester Encoder/Decoder and
Clock Recovery
Y
No Glue Interface to Industry-Standard
LAN Controllers
Ð Intel 82586, 82590, 82593 and 82596
Ð AMD 7990 (LANCE*)
Ð National Semiconductor 8390 and
83932 (SONIC*)
Ð Western Digital 83C690
Ð 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.
802.3i-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
Support of Cable Lengths
l
100m
AUI
Y
Complies with IEEE 802.3 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
802.3 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.
