KSZ9031MNX 查看數據表（PDF） - Microsemi Corporation

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KSZ9031MNX

Gigabit Ethernet Transceiver with GMII/MII Support

Microsemi Corporation 

KSZ9031MNX

1.0 INTRODUCTION

1.1 General Description

The KSZ9031MNX is a completely integrated triple-speed (10BASE-T/100BASE-TX/1000BASE-T) Ethernet physical-

layer transceiver for transmission and reception of data on standard CAT-5 unshielded twisted pair (UTP) cable.

The KSZ9031MNX offers the industry-standard GMII/MII (Gigabit Media Independent Interface/Media Independent

Interface) for connection to GMII/MII MACs in Gigabit Ethernet processors and switches for data transfer at 1000 Mbps

or 10/100 Mbps.

The KSZ9031MNX reduces board cost and simplifies board layout by using on-chip termination resistors for the four

differential pairs and by integrating an LDO controller to drive a low-cost MOSFET to supply the 1.2V core.

The KSZ9031MNX offers diagnostic features to facilitate system bring-up and debugging in production testing and in

product deployment. Parametric NAND tree support enables fault detection between KSZ9031MNX I/Os and the board.

The LinkMD® TDR-based cable diagnostic identifies faulty copper cabling. Remote and local loopback functions verify

analog and digital data paths.

The KSZ9031MNX is available in a 64-pin, lead-free QFN package.

FIGURE 1-1:

SYSTEM BLOCK DIAGRAM

10/100/1000Mbps

GMII/MII

ETHERNET MAC

GMII/MII

MDC/MDIO

MANAGEMENT

KSZ9031MNX

(SYSTEM POWER CIRCUIT)

PME_N

LDO

CONTROLLER

VIN

3.3VA

VOUT

1.2V (FOR CORE VOLTAGES)

RJ-45

CONNECTOR

MEDIA TYPES

10Base-T

100Base-TX

1000Base-T

DS00002096C-page 4

 2016 Microchip Technology Inc.

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