LAN8740AI-EN datasheet(5/136 Pages) MICROCHIP

номер детали	LAN8740Ai-EN

подробное описание детали	Small Footprint MII/RMII 10/100 Energy Efficient Ethernet Transceiver with HP Auto-MDIX and flexPWR짰 Technology

PDF	136 Pages

Scroll/Zoom	100%

производитель	MICROCHIP [Microchip Technology]

домашняя страница	http://www.microchip.com

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5 / 136 page

 2013-2015 Microchip Technology Inc.

DS00001987A-page 5

LAN8740A/LAN8740Ai

The LAN8740A/LAN8740Ai is available in commercial (0°C to +70°C) and industrial (-40°C to +85°C) temperature

range versions. A typical system application is shown in Figure 1-1. Figure 1-2 provides an internal block diagram of the

device.

FIGURE 1-1:

SYSTEM BLOCK DIAGRAM

FIGURE 1-2:

ARCHITECTURAL OVERVIEW

LAN8740A/

LAN8740Ai

10/100

Ethernet

MAC

MII/

RMII

Mode

LED

Transformer

Crystal or

Clock

Oscillator

MDI

RJ45

Interrupt

Generator

LEDs

PLL

Receiver

DSP System:

Clock

Data Recovery

Equalizer

Squeltch

& Filters

Analog-to-

Digital

10M RX

Logic

100M RX

Logic

100M PLL

10M PLL

Transmitter

10M

Transmitter

100M

Transmitter

10M TX

Logic

100M TX

Logic

Central Bias

PHY Address

Latches

LAN8740A/LAN8740Ai

RBIAS

LED1

nINT

XTAL2

XTAL1/CLKIN

LED2

Management

Control

Mode Control

Reset Control

MDIX

Control

HP Auto-MDIX

RXP/RXN

TXP/TXN

TXD[0:3]

TXEN

TXER

TXCLK

RXD[0:3]

RXDV

RXER

RXCLK

CRS

COL/CRS_DV

MDC

MDIO

Auto-

Negotiation

RMIISEL

nRST

MODE[0:2]

SMI

PHYAD[0:2]

WoL

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