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ICS1889Y

100Base-FX Integrated PHYceiver™

Integrated Circuit Systems 

Integrated

Circuit

Systems, Inc.

ICS1889

100Base-FX Integrated PHYceiverTM

General Description

The ICS1889 is a fully integrated physical layer device

supporting 100 Megabits per second CSMA/CD Fast

Ethernet fiber optic applications. It is designed to support

the requirements of DTEs (adapter cards), repeaters and

switches. It is compliant with the ISO/IEC 8802 Fast

Ethernet standard for 100Base-FX. It provides a Media

Independent Interface (MII) allowing direct chip-to-chip

connection, motherboard-to-daughter board connection or

connection via a cable in a similar manner to the AUI

approach used with 10Base-Tsystems. A station

management interface is provided to receive command

information and send status information. It transmits and

receives NRZI data and interfaces directly to the optical

transceiver. It can operate in either half duplex or full

duplex.

Features

• One chip integrated physical layer

• All CMOS, low power design

• ISO/IEC 8802-3 CSMA/CD compliant

• 100Base-FX Half & Full Duplex

• Far end fault detection

• Media Independent Interface (MII)

• Station management interface

• Extended register set including QuickPollTM detailed

status monitoring

• Transmit clock synthesis

• Receive clock and data recovery

• Detailed receive error reporting

• Extended Test Modes

• 52-pin MQFP package with 2.0 mil body thickness

Block Diagram

ICS1889RevF092497P

PHYceiver and QuickPoll are trademarks of Integrated Circuit Systems, Inc.

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