AM79C960KC datasheet(28/127 Pages) AMD

28 / 127 page

P R E L I M I N A R Y

AMD

1-370

Am79C960

PIN DESCRIPTION:

NETWORK INTERFACES

AUI Interface

CI+, CI–

Control Input

Input

This is a differential input pair used to detect Collision

(Signal Quality Error Signal).

DI+, DI–

Data In

Input

This is a differential receive data input pair to the PCnet-

ISA controller.

DO+, DO–

Data Out

Output

This is a differential transmit data output pair from the

PCnet-ISA controller.

Twisted Pair Interface

RXD+, RXD–

Receive Data

Input

This is the 10BASE-T port differential receive input pair.

TXD+, TXD–

Transmit Data

Output

These are the 10BASE-T port differential transmit

drivers.

TXP+, TXP–

Transmit Predistortion Control

Output

These are 10BASE-T transmit waveform pre-distortion

control differential outputs.

PIN DESCRIPTION

IEEE 1149.1 (JTAG) TEST ACCESS PORT

TCK

Test Clock

Input

This is the clock input for the boundary scan test mode

operation. TCK can operate up to 10 MHz. If left uncon-

nected, this pin has a default value of HIGH.

TDI

Test Data Input

Input

This is the test data input path to the PCnet-ISA control-

ler. If left unconnected, this pin has a default value of

HIGH.

TDO

Test Data Output

Output

This is the test data output path from the PCnet-ISA con-

troller. TDO is tri-stated when JTAG port is inactive.

TMS

Test Mode Select

Input

This is a serial input bit stream used to define the spe-

cific boundary scan test to be executed.

If left

unconnected, this pin has a default value of HIGH.

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