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LXT972A

3.3V Dual-Speed Fast Ethernet Transceiver

Intel 

3.3V Dual-Speed Fast Ethernet Transceiver Datasheet — LXT972A

Figure 1. LXT972A Block Diagram

RESET

ADDR0

MDIO

MDC

MDINT

MDDIS

TX_EN

TXD<3:0>

TX_ER

TX_CLK

LED/CFG<3:1>

COL

RX_CLK

RXD<3:0>

RXDV

CRS

RX_ER

Management /

Mode Select

Logic

Register Set

Clock

Generator

Pwr Supply

Parallel/Serial

Converter

Manchester

Encoder 10

Scrambler 100

& Encoder

Register

Set

Auto

Negotiation

OSP™

Pulse

Shaper

Collision

Detect

Clock

Generator

Media

Select

Serial-to-

Parallel

Carrier Sense Converter

Data Valid

Error Detect

Manchester

10 Decoder

100

Decoder &

Descrambler

OSP™

Slicer

+

TP

Driver

-

TP Out

OSP™

Adaptive EQ with

Baseline Wander

Cancellation

+

100TX

-

JTAG

TP In

+

10BT

-

VCC

GND

PWRDWN

REFCLK

TxSLEW<1:0>

TPOP

TPON

TDI,

TDO,

TMS,

TCK,

TRST

TPIP

TPIN

Datasheet

9

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