AV1890 View Datasheet(PDF) - Integrated Circuit Systems

Part Name

Description

Manufacturer

AV1890

10Base-T/100Base-TX Integrated PHYceiver™

Integrated Circuit Systems 

Integrated

Circuit

Systems, Inc.

ICS1890

10Base-T/100Base-TX Integrated PHYceiver™

General Description

The ICS1890 is a fully integrated physical layer device

supporting 10 and 100Mb/s CSMA/CD Ethernet applications.

DTE (adapter cards or motherboards), switching hub, repeater

and router applications are fully supported. The ICS1890

is compliant with the ISO/IEC 8802-3 Ethernet standard

for 10 and 100Mb/s operation.A Media Independent Interface

allowing direct chip-to-chip connection, motherboard-to-

daughterboard connection or connection via an AUI-like

cable is provided. A station management interface is

provided to enable command information and status

information exchange. The ICS1890 interfaces directly to

transmit and receive isolation transformers and can support

shielded twisted pair (STP) and unshielded twisted pair

(UTP) category 5 cables up to 105 meters. Operation in half

duplex or full duplex modes at either 10 or 100 Mbps

speeds is possible with control by Auto-Negotiation or

manual selection. By employing Auto-Negotiation the

technology capabilities of the remote link partner may be

determined and operation automatically adjusted to the

highest performance common operating mode.

Block Diagram

Features

• One chip integrated physical layer

• All CMOS, Low power design (<200mA max)

• Small footprint 64-pin 14mm 2 QFP package

• ISO/IEC 8802-3 CSMA/CD compliant

• Media Independent Interface (MII)

• Alternate 100M stream and 10M 7-wire serial

interfaces provided

• 10Base-TX Half & Full Duplex

• 100Base-TX Half & Full Duplex

• Fully integrated TP-PMD including Stream

Cipher Scrambler, MLT-3 encoder, Adaptive

Equalization, and Baseline Wander Correction

Circuitry

ICS1890RevG 10/21/97

PHYceiver and QuickPoll are trademarks of Integrated

Circuit Systems, Inc. Patents pending.

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.

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