ICS1893Y-10 IDT, Integrated Device Technology Inc, ICS1893Y-10 Datasheet - Page 51

• Manufacturer Part Number: ICS1893Y-10
• Description: PHYCEIVER LOW PWR 3.3V 64-TQFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: PHYceiver™r
• Type: PHY Transceiverr

Specifications of ICS1893Y-10

• 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: Contains lead / RoHS non-compliant
• Number Of Drivers/receivers: -
• Lead Free Status / Rohs Status: Not Compliant
• Other names: 1893Y-10; 800-1934-5; ICS1893Y-10

6.4.4 100Base-TX Operation: Adaptive Equalizer
6.4.5 100Base-TX Operation: Twisted-Pair Transmitter
6.4.6 100Base-TX Operation: Twisted-Pair Receiver
ICS1893Y-10 Rev F 1/20/04
The ICS1893Y-10 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 ICS1893Y-10 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 ICS1893Y-10. This technique closes the loop on the
entire data reception process and provides a very high overall reliability.
The ICS1893Y-10 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 ICS1893Y-10 interfaces with the medium through an isolation transformer (sometimes referred to as a
magnetic module). The ICS1893Y-10’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 ICS1893Y-10, the term ‘Twisted-Pair Transmitter’ refers to the set of Twisted-Pair
2. For information on the 10Base-T Twisted-Pair Transmitter, see
The ICS1893Y-10 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 ICS1893Y-10, the term ‘Twisted-Pair Receiver’ refers to the set of Twisted-Pair
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
ICS1893Y-10 - Release
Transmit output pins (TP_TXP and TP_TXN).
Twisted-Pair
Receive output pins (TP_RXP and TP_RXN).
Twisted-Pair
Transmitter”.
Receiver”.
Copyright © 2004, Integrated Circuit Systems, Inc.
All rights reserved.
51
Section 6.5.12, “10Base-T Operation:
Section 6.5.11, “10Base-T Operation:
Chapter 6 Functional Blocks
January, 2004