ICS1893AGILF View Datasheet(PDF) - Integrated Circuit Systems

Part Name

Description

MFG CO.

ICS1893AGILF

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

Integrated Circuit Systems 

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ICS1893AG Data Sheet - Preliminary

Chapter 6 Interface Overviews

6.3.2 Twisted-Pair Receiver Interface

Figure 6-2 shows the design for the ICS1893AG twisted-pair receiver interface.

• Two 56.2Ω 1% resistors are in series, with the center bypassed to ground with a 0.1µF bypass capacitor.

• No bypass capacitor is used with the receive transformer center tap.

• A 4.7-pF capacitor must be included across the ICS1893AG side of the receive transformer.

Note:

1. Keep leads as short as possible.

2. Install the resistor network as close to the ICS1893AG as possible.

Figure 6-2. ICS1893AG Receiver Twisted Pair

System Ground Plane Chassis Ground Plane

TP_RXP 21

ICS1893AG

4.7 pF

TP_RXN 22

1:1

56.2Ω 1%

Center

Tap

56.2Ω 1%

0.1 µF

Separate Ground

Plane

To RJ-45

75Ω

0.1 µF 2 kV

ICS1893AG, Rev. A 04/14/05

Copyright © 2005, Integrated Circuit Systems, Inc.

All rights reserved.

27

April, 2005

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