ICS1893YI-10LF IDT, Integrated Device Technology Inc, ICS1893YI-10LF Datasheet - Page 49
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ICS1893YI-10LF
Manufacturer Part Number
ICS1893YI-10LF
Description
PHYCEIVER LOW PWR 3.3V 64-TQFP
Manufacturer
IDT, Integrated Device Technology Inc
Series
PHYceiver™r
Type
PHY Transceiverr
Specifications of ICS1893YI-10LF
Protocol
MII
Voltage - Supply
3.14 V ~ 3.47 V
Mounting Type
Surface Mount
Package / Case
64-TQFP, 64-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of Drivers/receivers
-
Lead Free Status / Rohs Status
Compliant
Other names
1893YI-10LF
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ICS1893YI-10LF
Manufacturer:
IDT
Quantity:
390
Company:
Part Number:
ICS1893YI-10LF
Manufacturer:
IDT, Integrated Device Technology Inc
Quantity:
10 000
Part Number:
ICS1893YI-10LF
Manufacturer:
IDT
Quantity:
20 000
Company:
Part Number:
ICS1893YI-10LFT
Manufacturer:
IDT, Integrated Device Technology Inc
Quantity:
10 000
7.4.4 100Base-TX Operation: Adaptive Equalizer
7.4.5 100Base-TX Operation: Twisted-Pair Transmitter
7.4.6 100Base-TX Operation: Twisted-Pair Receiver
ICS1893 Rev C 6/6/00
The ICS1893 has a TP-PMD sublayer that uses adaptive equalization circuitry to compensate for signal
amplitude and phase distortion incurred from the transmission medium. At a data rate of 100 Mbps, the
transmission medium (that is, the cable) introduces significant signal distortion because of high-frequency
attenuation and phase shift. The high-frequency loss occurs primarily because of the cable skin effect that
causes the conductor resistance to rise as the square of the frequency rises.
The ICS1893 has an adaptive equalizer that accurately compensates for these losses in shielded
twisted-pair (STP) and unshielded twisted-pair (UTP) cables. The DSP-based adaptive equalizer uses a
technique that compensates for a wide range of cable lengths. The optimizing parameter for the
equalization process is the overall bit error rate of the ICS1893. This technique closes the loop on the entire
data reception process and provides a very high overall reliability.
The ICS1893 uses the same Twisted-Pair Transmit pins (TP_TXP and TP_TXN) for both 10Base-T and
100Base-TX operations. Each twisted-pair transmitter module is a current-driven, differential driver that
can supply either of the following:
•
•
The ICS1893 interfaces with the medium through an isolation transformer (sometimes referred to as a
magnetic module). The ICS1893’ s transmitter uses wave-shaping techniques to control the output signal
rise and fall times (thereby eliminating the need for external filters) and interfaces directly to the isolation
transformer.
Note:
1. In reference to the ICS1893, the term ‘ Twisted-Pair Transmitter’ refers to the set of Twisted-Pair
2. For information on the 10Base-T Twisted-Pair Transmitter, see
The ICS1893 uses the same Twisted-Pair Receive pins (TP_RXP and TP_RXN) for both 10Base-T and
100Base-TX operations. The internal twisted-pair receiver modules interface with the medium through an
isolation transformer. The 100Base-TX receiver module accepts and processes a differential three-level
100Base-TX (that is, MLT-3 encoded) signal from the isolation transformer. (In contrast, the 10Base-T
receiver module accepts and processes a differential two-level, Manchester- encoded, 10Base-T signal
from the isolation transformer).
Note:
1. In reference to the ICS1893, the term ‘ Twisted-Pair Receiver’ refers to the set of Twisted-Pair Receive
2. For information on the 10Base-T Twisted-Pair Receiver, see
A two-level 10Base-T (that is, Manchester-encoded) signal
A three-level 100Base-TX (that is, MLT-3 encoded) signal
ICS1893 - Release
Transmit output pins (TP_TXP and TP_TXN).
Twisted-Pair Transmitter”
output pins (TP_RXP and TP_RXN).
Twisted-Pair Receiver”
.
.
Copyright © 2000, Integrated Circuit Systems, Inc.
All rights reserved.
49
Section 7.5.12, “ 10Base-T Operation:
Section 7.5.11, “ 10Base-T Operation:
Chapter 7 Functional Blocks
June, 2000