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LXT9781

Fast Ethernet 10/100 Multi-Port Transceiver with RMII

Intel 

Fast Ethernet 10/100 Multi-Port Transceiver with RMII — LXT9761/9781

Figure 1. LXT9781 Block Diagram

QSTAT

QCLK

ADD<4:0>

MDIO

MDC

MDINT

RMII

TXENn

TXDn_0

TXDn_1

Management /

Mode Select

Logic

Global Functions

Register Set

Parallel/Serial

Converter

Manchester

Encoder

10

Scrambler 100

& Encoder

Mgmt Counters

Auto

Negotiation

CIM

OSP TM

Pulse

Shaper

REFCLK

Clock

Generator

Pwr Supply /

PwrDown

VCC

GND

PWRDWN

RESET

8

LEDS<7:0>

LEDLATCH

+

TP

LEDCLK

Driver

-

+

TP / Fiber

Out

TPFOPn

TPFONn

ECL

Driver

-

RMII

RXDn_0

RXDn_1

CRS_DVn

RXERn

Register Set

Clock

Generator

Media

Select

Serial to

Parallel

Carrier Sense Converter

Data Valid

Error Detect

Manchester

10 Decoder

100

Decoder &

Descrambler

OSP TM

Slicer

Per-Port Functions

OSP TM

Adaptive EQ

with BaseLine

Wander

Cancellation

+

100TX

-

+

100FX

-

+

10BT

PORT 0

-

PORT 1

PORT 2

PORT 3

PORT 4

PORT 5

PORT 6

PORT 7

TP / Fiber

In

SDn/TXn

TPFIPn

TPFINn

Datasheet

9

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