ICS1893BY-10 Data Sheet - Release
Chapter 8 Pin Diagram, Listings, and Descriptions
8.3 ICS1893BY-10 Pin Descriptions
The tables in this section list the ICS1893BY-10 pins by their functional grouping.
8.3.1 Transformer Interface Pins
Transformer connections on the ICS1893BY-10 signals TP_AP, TP_AN, TP_BP and TP_BN are shown in
Table 8.2. The previous TP_CT pin on the ICS1893AF is not used with the ICS1893BY-10. The typical
Twisted Pair Transformers connections are shown in Chapter 5. The transformer must be 1:1 ratio and
symetrical for 10/100 MDI/MDIX applications since the transmit twisted pair and receive twisted pair are
interchangeable. ICS1893 PHYs do not have power connections to the transformer. All transformer power
is supplied by the ICS1893. Note the twisted pair are polarity sensitive and must connect to the RJ45 with
the same polarity as shown in the figure.
Table 8-2 lists the pins for the transformer interface group of pins.
Table 8-2. Transformer Interface Pins
Signal Name
TP_AP
Pin No.
Signal Description
5
6
Twisted Pair A Positive
Twisted Pair A Negative
Twisted Pair B Positive
Twisted Pair B Negative
TP_AN
TP_BP
10
9
TP_BN
ICS1893BY-10 Rev A 3/24/04
March, 2004
Copyright © 2004, Integrated Circuit Systems, Inc.
All rights reserved.
100
ICSI [ INTEGRATED CIRCUIT SOLUTION INC ]
