Philips Semiconductors

Product specification

NE83C92

Low-power coaxial Ethernet transceiver

1995 May 1

2

PIN DESCRIPTIONS

PIN NO.

N PKG

PIN NO.

PLCC

SYMBOL

DESCRIPTION

1

2

2

3

CD+

CD–

Collision Outputs. Balanced differential line driver outputs which send a 10MHz signal to the DTE in

the event of a collision, jabber interrupt or heartbeat test. External pull-down resistors are optional with

local/integrated MAU application.

3

6

4

12

RX+

RX–

Receiver Outputs. Balanced differential line driver outputs which send the received signal to the DTE.

External pull-down resistors are optional with local/integrated MAU application.

7

8

13

14

TX+

TX–

Transmitter Inputs. Balanced differential line receiver inputs which accept the transmission signal from

the DTE and apply it to the coaxial cable at TXO, once it meets Tx squelch threshold.

9

15

HBE

when connected to GND or left floating.

11

12

18

19

RR+

RR–

External Resistor. A 1k

Ω (1%) resistor connected between these pins establishes the signaling current

at TXO.

14

26

RXI

Receiver Input. This pin is connected directly to the coaxial cable. Received signals are equalized,

amplified, and sent to the DTE through the RX

± pins, once it meets Rx squelch threshold.

15

28

TXO

Transmitter Output. This pin is connected directly (Thin Ethernet) or through an external isolating

diode (Ethernet) to the coaxial cable.

16

1

CDS

Collision Detect Sense. Ground sense connection for the collision detection circuitry. This pin should

be connected directly to the coaxial cable shield for standard Ethernet operation.

10

16

17

GND

Positive Supply Pin.

4

5

13

5 to 11

20 to 25

Negative Supply Pins.

NOTE:

1. The IEEE 802.3 name for CD is CI; for RX is DI; for TX is DO.