1893Brief Rev B 9/10/99

September, 1999

ICS reserves the right to make changes in the device data identified in

this publication without further notice. ICS advises its customers to

obtain the latest version of all device data to verify that any information

being relied upon by the customer is current and accurate.

Integrated Circuit Systems, Inc.

3.3-V 10Base-T/100Base-TX Integrated PHYceiver

™

ICS1893 Brief

Document Type: Brief

Document Stage: Release

Features

24 dB at 100 MHz across a temperature range from -5

° to

+85

° C

eliminate killer packets across temperature range of from

-5

° to +85° C

PMD, and AUTONEG sublayers of IEEE standard

– Adaptive equalization and baseline wander correction

– Transmit wave shaping and stream cipher scrambler

– MLT-3 encoder and NRZ/NRZI encoder

– Node, repeater, and switch applications

– Managed and unmanaged applications

– 10M or 100M half- and full-duplex modes

– Parallel detection

– Auto-negotiation, with Next Page capabilities

– 10M or 100M Media Independent Interface

– 100M Symbol Interface (bypasses the PCS)

– 10M 7-wire Serial Interface

General

The ICS1893 is a low-power, physical-layer device (PHY)

that supports the ISO/IEC 10Base-T and 100Base-TX

Carrier-Sense Multiple Access/Collision Detection

(CSMA/CD) Ethernet standards. The ICS1893 architecture

is based on the ICS1892. The ICS1893 supports managed or

unmanaged node, repeater, and switch applications.

The ICS1893 incorporates digital signal processing (DSP)

in its Physical Medium Dependent (PMD) sublayer. As a

result, it can transmit and receive data on unshielded

twisted-pair (UTP) category 5 cables with attenuation in

excess of 24 dB at 100 MHz. With this ICS-patented

technology, the ICS1893 can virtually eliminate errors from

killer packets.

The ICS1893 provides a Serial Management Interface for

exchanging command and status information with a Station

Management (STA) entity.

The ICS1893 Media Dependent Interface (MDI) can be

configured to provide either half- or full-duplex operation at

data rates of 10 MHz or 100 MHz. The MDI configuration

can be established manually (with input pins or control

r e gis t er se t t i n g s ) or automati c a ll y (u s i ng the

Au to - N e g o tiatio n featu r es). Wh en th e I C S1 8 9 3

Auto-Negotiation sublayer is enabled, it exchanges

technology capability data with its remote link partner and

automatically selects the highest-performance operating

mode they have in common.

Clock

Power

LEDs and PHY

Address

Twisted-

Pair

Interface to

Magnetics

Modules and

RJ45

Connector

Integrated

Switch

MII

Extended

Register

Set

Interface

MUX

ICS1893 Block Diagram

PCS

•Frame

•

CRS/COL

Detection

•

Parallel to Serial

•4B/5B

Auto-

Negotiation

10Base-T

100Base-T

TP_PMD

•MLT-3

•

Stream Cipher

•

Adaptive Equalizer

•

Baseline Wander

Correction

PMA

•

Clock Recovery

•

Link Monitor

•

Signal Detection

•

Error Detection

Low-Jitter

Clock

Synthesizer

Configuration

and Status

10/100 MII or

Alternate

MAC/Repeater

Interface

MII Serial

Management

Interface