L80227 Datasheet, PDF (15/140 Pages) List of Unclassifed Manufacturers – 10BASE-T/ 100BASE-TX Ethernet PHY

Chapter 1
Introduction
This chapter contains a brief introduction to the L80227 10BASE-
T/100BASE-TX Ethernet Physical Layer Device (PHY). It contains the
following sections:
Section 1.1, “Overview”
Section 1.2, “Features”
1.1 Overview
This manual describes the L80227 device. The device contains a single
PHY channel. The convention used in this manual is that device refers
to the IC, and channel refers to the PHY in the device.
The L80227 is a highly-integrated analog interface IC for twisted-pair
Ethernet applications and can be congured for either 100 Mbits/s
(100BASE-TX) or 10 Mbits/s (10BASE-T) Ethernet operation.
The PHY channel contains the following blocks:
4B5B Encoder/Manchester Encoder
Scrambler
10BASE-T Transmitter
100BASE-TX Transmitter
10BASE-T Receiver
100BASE-TX Receiver
Squelch
Clock and Data Recovery
Link Integrity and Autonegotiation
L80227 10BASE-T/100BASE-TX Ethernet PHY Technical Manual
1-1
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