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80220 Datasheet

(80220 / 80221) 100BASE-TX/10BASE-T Ethernet Media Interface Adapter

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80228002/8200/82022211
100BASE-TX/10BASE-T Ethernet
Media Interface Adapter
98184
Features
s Single Chip 100Base-TX / 10Base-T Physical Layer
Solution
s Dual Speed - 100/10 Mbps
s Half And Full Duplex
s MII Interface To Ethernet Controller
s MI Interface For Configuration & Status
s Optional Repeater Interface
s AutoNegotiation: 10/100, Full/Half Duplex
s Meets All Applicable IEEE 802.3, 10Base-T,
100Base-TX Standards
s On Chip Wave Shaping - No External Filters
Required
s Adaptive Equalizer
s Baseline Wander Correction
s Interface to External 100Base-T4 PHY
s LED Outputs
- Link
- Activity
- Collision
- Full Duplex
- 10/100
- User Programmable
s Many User Features And Options
s Few External Components
s Pin configuration
- 44L PLCC - 80220
- 64L LQFP - 80221
Note: Check for latest Data Sheet revision
before starting any designs.
SEEQ Data Sheets are now on the Web, at
www.lsilogic.com.
This document is an LSI Logic document. Any
reference to SEEQ Technology should be
considered LSI Logic.
Description
The 80220/80221 are highly integrated analog interface
IC's for twisted pair Ethernet applications. The 80220/
80221 can be configured for either 100 Mbps (100Base-
TX) or 10 Mbps (10Base-T) Ethernet operation. The
80220 is packaged in a 44L package, while the 80221 is
packaged in a 64L package and contains a few more
features.
The 80220/80221 consist of 4B5B/Manchester encoder/
decoder, scrambler/descrambler, 100Base-TX/10Base-T
twisted pair transmitter with wave shaping and output
driver, 100Base-TX/10Base-T twisted pair receiver with
on chip equalizer and baseline wander correction, clock
and data recovery, AutoNegotiation, controller interface
(MII), and serial port (MI).
The addition of internal output waveshaping circuitry and
on-chip filters eliminates the need for external filters nor-
mally required in 100Base-TX and 10Base-T applications.
The 80220/80221 can automatically configure itself for
100 or 10 Mbps and Full or Half Duplex operation with the
on-chip AutoNegotiation algorithm.
The 80220/80221 can access eleven 16-bit registers though
the Management Interface (MI) serial port. These registers
contain configuration inputs, status outputs, and device
capabilities.
The 80220/80221 are ideal as media interfaces for
100Base-TX/10Base-T adapter cards, motherboards, re-
peaters, switching hubs, and external PHY's.
MD400159/E
4-11
LSI
LSI



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