1893CKLFT IDT, 1893CKLFT Datasheet - Page 14

• Manufacturer Part Number: 1893CKLFT
• Description: Ethernet ICs 3.3V 10/100 BASE TX INTEGRATED PHYCEIVER
• Manufacturer: IDT

Specifications of 1893CKLFT

• Rohs: yes
• Part # Aliases: ICS1893CKLFT

4.5 100Base-TX Operations
4.6 10Base-T Operations
4.7 Half-Duplex and Full-Duplex Operations
ICS1893CK-40, Rev. C, 06/02/09
The ICS1893CK-40 100Base-TX mode provides 100Base-TX physical layer (PHY) services as defined in
the ISO/IEC 8802-3 standard. In the 100Base-TX mode, the ICS1893CK-40 is a 100M translator between
a MAC and the physical transmission medium. As such, the ICS1893CK-40 has two interfaces, both of
which are fully configurable: one to the MAC and one to the Link Segment. In 100Base-TX mode, the
ICS1893CK-40 provides the following functions:
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To accurately transmit and receive data, the ICS1893CK-40 employs DSP-based wave shaping, adaptive
equalization, and baseline wander correction. In addition, in 100Base-TX mode, the ICS1893CK-40
provides a variety of control and status means to assist with Link Segment management. For more
information on 100Base-TX, see
The ICS1893CK-40 10Base-T mode provides 10Base-T physical layer (PHY) services as defined in the
ISO/IEC 8802-3 standard. In the 10Base-T mode, the ICS1893CK-40 is a 10M translator between a MAC
and the physical transmission medium. In 10Base-T mode, the ICS1893CK-40 provides the following
functions:
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The ICS1893CK-40 supports half-duplex and full-duplex operations for both 10Base-T and 100Base-TX
applications. Full-duplex operation allows simultaneous transmission and reception of data, which
effectively doubles the Link Segment throughput to either 20 Mbps (for 10Base-T operations) or 200 Mbps
(for 100Base-TX operations).
As per the ISO/IEC standard, full-duplex operations differ slightly from half-duplex operations. These
differences are necessary, as during full-duplex operations a PHY actively uses both its transmit and
receive data paths simultaneously.
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For more information on half-duplex and full-duplex operations, see the following sections:
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Data conversion from both parallel-to-serial and serial-to-parallel formats
Data encoding/decoding (4B/5B, NRZ/NRZI, and MLT-3)
Data scrambling/descrambling
Data transmission/reception over a twisted-pair medium
Data conversion from both parallel-to-serial and serial-to-parallel formats
Manchester data encoding/decoding
Data transmission/reception over a twisted-pair medium
In 10Base-T full-duplex operations, the ICS1893CK-40 disables its loopback function (that is, it does not
automatically loop back data from its transmitter to its receiver) and disables its SQE Test function.
Section 7.2, “Register 0: Control Register”
Section 7.2.8, “Duplex Mode (bit 0.8)”
Section 7.3, “Register 1: Status Register”
Section 7.6, “Register 4: Auto-Negotiation Register”
ICS1893CK-40 Data Sheet - Release
Copyright © 2009, Integrated Device Technology, Inc.
Section 6.4, “Functional Block: 100Base-TX TP-PMD
All rights reserved.
14
Chapter 4 Operating Modes Overview
Operations”.
June 2009