1893Y-10 IDT, Integrated Device Technology Inc, 1893Y-10 Datasheet - Page 50
1893Y-10
Manufacturer Part Number
1893Y-10
Description
Manufacturer
IDT, Integrated Device Technology Inc
Datasheet
1.1893Y-10.pdf
(152 pages)
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7.4.7 100Base-TX Operation: Auto Polarity Correction
7.4.8 100Base-TX Operation: Isolation Transformer
ICS1893 Rev C 6/6/00
The ICS1893 can sense and then automatically correct a signal polarity that is reversed on its Twisted-Pair
Receiver inputs. A signal polarity reversal occurs when the input signals on the TP_RXP and TP_RXN pins
are crossed or swapped (a problem that can occur during network installation or wiring). This function is
primarily a 10Base-T function, however, it is also active during Auto-Negotiation. For more information on
the 10Base-T Auto Polarity Correction, see
The ICS1893 interfaces with a medium through isolation transformers. The PHY requires two isolation
transformers: one for its Twisted-Pair Transmitter and the other for its Twisted-Pair Receiver. These
isolation transformers provide both physical isolation as well as the means for coupling a signal between
the ICS1893 and the medium for both 10Base-T and 100Base-TX operations.
Note:
ICS1893 Data Sheet - Release
For information on isolation transformers (also referred to as magnetic modules), see
“ Twisted-Pair Interface”
Copyright © 2000, Integrated Circuit Systems, Inc.
All rights reserved.
.
Section 7.5.13, “ 10Base-T Operation: Auto Polarity Correction”
50
Chapter 7 Functional Blocks
Section 6.5,
June, 2000
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