4

ML2652/ML2653

NAME

FUNCTION

RxD

Receive data output. Digital output which

contains receive data sent to the controller.

RxE

Receive data valid. Digital output to the controller

that indicates when the receive data (RxD) is

valid.

LPBK

Local loopback. Digital input from the controller

which forces the device to loopback transmit data

without sending it on the media.

FD

Full Duplex Enable. When enabled the 10BASE-T

MAU loopback and collision detect are disabled.

LPBK must be disabled when using this function.

CS0

Controller selection input. Digital input which

selects one of four standard controller timing

interfaces. This pin has an internal pulldown

resistor to GND.

CS1

Controller select input. Digital input which selects

one of four standard controller timing interfaces.

This pin has an internal pulldown resistor to GND.

CS2

Controller select input. Digital input which selects

one of four standard controller timing interfaces.

This pin has an internal pulldown resistor to GND.

RSL

Receive squelch level select input. Pin has

internal pullup resistor to VCC.

RSL = High Receive squelch level = 10Base-T

RSL = Low Receive squelch level = extended

distance

XMT

Transmit status output. Digital output which

indicates data transmission on Tx+ and Tx–.

Pin is open drain output with resistor pullup and is

capable of driving an LED. XMT pin and RCV pin

are the same pin for the ML2653.

RCV

Receive status output. Digital output which

indicates unsquelched data reception on Rx+

and Rx–. Pin is an open drain output with resistor

pullup and is capable of driving an LED.

NAME

FUNCTION

CLS

Collision status output. Digital output which

indicates that collision condition has been

detected. Pin is an open drain output with resistor

pullup and is capable of driving an LED.

LTP

Link test pass output/input. This pin consists of an

open drain output transistor with a resistor pullup

that serves both as a link test pass output and a

link test disable input. When used as an output,

this pin is capable of driving an LED.

LTP = High, link test failed

LTP = Low, link test pass

LTP = GND, link test disabled

AUI/TP AUI/twisted pair interface select input.

AUI/TP = High, AUI selected

AUI/TP = Low, TP selected

RPOL This pin must be grounded at all times.

JAB

Jabber detect output. Digital output which

indicates that the jabber condition has been

detected. Pin is an open drain output with resister

pullup and is capable of driving a LED.

JAB = High, normal

JAB = Low, jabber detected

AUISEL AUI/TP port output status

AUISEL = High, TP port selected

AUISEL = Low, AUI port selected

JABDIS Jabber disable input

JABDIS = High, jabber disabled

JABDIS = Low, normal operation

NC

No connect. Leave this pin open circuit.

ABSOLUTE MAXIMUM RATINGS

Absolute maximum ratings are limits beyond which the

life of the integrated circuit may be impaired. All voltages

unless otherwise specified are measured with respect to

GND. (Note 1)

Input current per pin ............................................. ±25 mA

Power dissipation .............................................. 0.75 Watt

Storage temperature range ........................ –65°C to 150°C

Junction Temperature .............................................. 150°C

Lead temperature (soldering, 10 sec) ....................... 260°C

Thermal Resistance (

28-Lead PLCC ................................................... 60°C/W

44-Lead PLCC ................................................... 54°C/W

44-Lead TQFP ................................................... 67°C/W