KSZ9031RNX Просмотр технического описания (PDF) - Micrel

Номер в каталоге

Компоненты Описание

производитель

KSZ9031RNX

Gigabit Ethernet Transceiver with RGMII Support

Micrel 

KSZ9031RNX

Gigabit Ethernet Transceiver

with RGMII Support

Revision 2.2

General Description

The KSZ9031RNX 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 KSZ9031RNX provides the reduced gigabit media

independent interface (RGMII) for direct connection to

RGMII MACs in gigabit Ethernet processors and switches

for data transfer at 10/100/1000Mbps.

The KSZ9031RNX 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 KSZ9031RNX 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 KSZ9031 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 standard KSZ9031RNX is available in the 48-pin,

lead-free QFN package, and the AEC-Q100 automotive

qualified parts, KSZ9031RNXUA and KSZ9031RNXVA,

are available in the 48-pin lead-free WQFN package (see

Ordering Information).

Data sheets and support documentation are available on

Micrel’s web site at: www.micrel.com.

Functional Diagram

Features

• Single-chip 10/100/1000Mbps IEEE 802.3-compliant

Ethernet transceiver

• RGMII timing supports on-chip delay according to

RGMII Version 2.0, with programming options for

external delay and making adjustments and corrections

to TX and RX timing paths

• RGMII with 3.3V/2.5V/1.8V tolerant I/Os

• Auto-negotiation to automatically select the highest link-

up speed (10/100/1000Mbps) and duplex (half/full)

• On-chip termination resistors for the differential pairs

• On-chip LDO controller to support single 3.3V supply

operation – requires only one external FET to generate

1.2V for the core

• Jumbo frame support up to 16KB

• 125MHz reference clock output

• Energy detect power-down mode for reduced power

consumption when the cable is not attached

• Energy Efficient Ethernet (EEE) support with low-power

idle (LPI) mode and clock stoppage for 100Base-TX/

1000Base-T and transmit amplitude reduction with

10Base-Te option

• Wake-On-LAN (WOL) support with robust custom-

packet detection

• AEC-Q100 qualified for automotive applications

(KSZ9031RNXUA, KSZ9031RNXVA)

LinkMD is a registered trademark of Micrel, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

May 14, 2015

Revision 2.2

Share Link: