MTD981AF 查看數據表（PDF） - Myson Century Inc

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MTD981AF

10/100 Ethernet Transceiver

Myson Century Inc 

MYSON

TECHNOLOGY

MTD981A

10/100 Ethernet Transceiver

FEATURES

· 10BASE-T, 100BASE-TX, and 100BASE-FX IEEE-802.3 compliant transmit and receive functions

· IEEE 802.3u Clause 28 compliant Auto-Negotiation function

· Full duplex operation capable

· Baseline wander compensation

· Supports 1:1 or 1.25:1 transmit transformer

· Output waveform shaping – no external filter required

· LED indicators: LINK, TX, RX, COL, 100, 10, FDX

· Single 3.3-V power supply with 5V tolerant I/O

· 100-pin PQFP package

GENERAL DESCRIPTIONS

The MTD981A is a highly integrated analog interface IC for twisted pair Ethernet applications. It provides the

active circuitry to interface IEEE 802.3 media independent interface (MII) compliant controllers to 10BASE-T

or 100BASE-TX media. It also provides an ECL-type interface for use with 100BASE-FX fiber networks.

The MTD981A supports full duplex operation at 10 and 100 Mbps. Its operating condition can be set by

using Auto-Negotiation, parallel detection, or manual control. The MTD981A is ideal as a media interface for

10BASE-T/100BASE-TX network interface cards, motherboards, 10/100 repeaters, switching hubs, and

external PHYs.

BLOCK DIAGRAM

Transmit

100M

4B/5B Encoder,

Scrambler,

Parallel/Serial

MII Serial

Manage-

ment &

Co nt ro l

10M

MII Reg-

isters &

Interface

Logic

Parallel/Serial,

Manchester

Encoder

Manchester

Decoder, Serial/

Parallel

Receive

Se ria l/ Parallel

Descrambler,

5B/4B Decoder

NRZ/NRZI ,

MLT3 Encoder

TX Clock

Generator

Pulse

Shaper &

Filter

UTP

Driver

TXOP

TXON

Carrier Sense,

Collision Detect

Auto Nego-

tiation

LEDs

Clock

Recovery

Clock Ref-

erence

10M UTP

Adaptive EQ.

Receiver

Baseline Wander 100M

Corrector, MLT3

Decoder, NRZI/NRZ

LINK

TX

RX

COLL ISIO N

100X

RXIP

RXIN

Vcc

Ground

This datasheet contains new product information. Myson Technology reserves the rights to modify the product specification without

notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product.

MTD981A Revision 1.2 02/19/2001

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