ICS1892
10Base-T/100Base-TX Integrated PHYceiver™
TSD
Chapter 9 Pin Diagram, Listings, and Descriptions
ICS1892 Data Sheet
9.2 ICS1892 Pin Descriptions
The tables in this section list the ICS1892 pins by their functional grouping.
9.2.1 Transformer Interface Pins
Table 9-3 lists the pins for the transformer interface group of pins.
Table 9-3. Transformer Interface Pins
Pin
Pin
Pin
Pin Description
Name
Number
Type
TP_RXN
TP_RXP
11
10
Input
Input
Twisted-Pair Receive (Data) Negative.
Within this table, see the description at pin 10, TP_RXP.
Twisted-Pair Receive (Data) Positive.
Data reception of differential analog signals occurs over the TP_RXN
and TP_RXP pair of differential-signal pins. Together these pins receive
the serial bit stream from the UTP cable through an isolation
transformer.
Depending on the operating mode of the remote link partner, the
received data is one of the following types of signals:
• Two-level (10Base-T, that is, Manchester encoded) signals
• Three-level (100Base-TX, that is, MLT-3 encoded) signals
These signals interface directly to an isolation transformer, which in
turn, interfaces with the UTP cable.
TP_TXN
TP_TXP
6
5
Output Twisted-Pair Transmit (Data) Negative.
Within this table, see the description at pin 5, TP_TXP.
Output Twisted-Pair Transmit (Data) Positive.
Differential analog signal transmission occurs over the TP_TXN and
TP_TXP pair of pins. Together these pins drive the serial bit stream
over the UTP cable.
Depending on the operating mode of the ICS1892 MDI, the
current-driven differential driver produces one of the following types of
signals:
• Two-level (10Base-T, that is, Manchester encoded) signals
• Three-level (100Base-TX, that is, MLT-3 encoded) signals
These signals interface directly to an isolation transformer, which in
turn, drives the UTP cable.
ICS1892, Rev. D, 2/26/01
February 26, 2001
© 2000-2001, Integrated Circuit Systems, Inc.
All rights reserved.
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IDT™ / ICS™ 10Base-T/100Base-TX Integrated PHYceiver™
ICS1892
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IDT [ INTEGRATED DEVICE TECHNOLOGY ]
