LXT974A Ver la hoja de datos (PDF) - Intel

Número de pieza

componentes Descripción

Fabricante

LXT974A

Fast Ethernet 10/100 Quad Transceivers

Intel 

Fast Ethernet 10/100 Quad Transceivers — LXT974/LXT975

Figure 1. LXT974/975 Block Diagram

VCCMII

MII_MD<1:0>

CFG<2:0>

ADDR<4:2>

MDIO

MDC

MDINT

TX_ENn

MII

TX_ERn

TXDn<3:0>

TRSTEn

TX_CLKn

RX_CLKn

MII RXDn<3:0>

CRSn

COLn

RX_DVn

RX_ERn

Management /

Mode Select

Logic

MII Power Global Functions

Supply

3.3V or 5V

Internal Clocks

Register Set

Parallel/Serial

Converter

Manchester

Encoder

10

Scrambler 100

& Encoder

Auto

Negotiation

Pulse

Shaper

Tristate Control

Clock

Generator

Media Select &

Line Energy Monitor

Carrier Sense

Collision Detect

Data Valid

Error Detect

Serial to

Parallel

Converter

Manchester

10 Decoder

100

Decoder &

Descrambler

Slicer

Baseline

Wander

Correction

Per-Port Functions

+

TP

Driver

-

+

ECL

Driver

-

FDX Status

& LED

Drivers

+

TP

Rcvr

-

+

ECL

Rcvr

-

PORT 0

PORT 1

PORT 2

PORT 3

Pwr Supply /

PwrDown

3

TP Out

/

Fiber In

3

Fiber Out

/

TP In

CLK25M

VCC

GND

PWRDN

RESET

SerLED

LEDENA

LEDCLK

LEDDAT

TPOP/FIBINn

TPON/FIBIPn

LEDn<2:0>

SD/TXn

TPIP/FIBOPn

TPIN/FIBONn

Datasheet

9

Share Link: