185

Pin Description

PIN

SYMBOL

SECTION

DESCRIPTION

Recs/Trans

Supply pin 5 volts

±5%.

2

429 DI1 (A)

Receiver

ARlNC 429 data input to Receiver 1.

3

429 DI1 (B)

Receiver

ARlNC 429 data input to Receiver 1.

4

429 Dl2 (A)

Receiver

ARINC 429 data input to Receiver 2.

5

429 DI2 (B)

Receiver

ARINC 429 data input to Receiver 2.

6D/R1

Receiver

Device ready flag output from Receiver 1 indicating a valid data word is ready to be fetched.

7D/R2

Receiver

Device ready flag output from Receiver 2 indicating a valid data word is ready to be fetched.

8

SEL

Receiver

Bus Data Selector - Input signal to select one of two 16-bit words from either Receiver 1 or 2.

9EN1

Receiver

Input signal to enable data from Receiver 1 onto the data bus.

10

EN2

Receiver

Input signal to enable data from Receiver 2 onto the data bus.

11

BD15

Recs/Trans

Bi-directional data bus for fetching data from either of the Receivers, or for loading data into

the Transmitter memory or control word register. See Control Word Table for description of

Control Word bits.

12

BD14

Recs/Trans

See Pin 11.

13

BD13

Recs/Trans

See Pin 11.

14

BD12

Recs/Trans

See Pin 11.

15

BD11

Recs/Trans

See Pin 11.

16

BD10

Recs/Trans

See Pin 11.

17

BD09

Recs/Trans

See Pin 11.

18

BD08

Recs/Trans

See Pin 11.

19

BD07

Recs/Trans

See Pin 11.

20

BD06

Recs/Trans

See Pin 11.

21

GND

Recs/Trans

Circuit Ground.

22

BD05

Recs/Trans

See Pin 11.

23

BD04

Recs/Trans

See Pin 11. Control Word function not applicable.

24

BD03

Recs/Trans

See Pin 11. Control Word function not applicable.

25

BD02

Recs/Trans

See Pin 11. Control Word function not applicable.

26

BD01

Recs/Trans

See Pin 11. Control Word function not applicable.

27

BD00

Recs/Trans

See Pin 11. Control Word function not applicable.

28

PL1

Transmitter

Parallel load input signal loading the first 16-bit word into the Transmitter memory.

29

PL2

Transmitter

Parallel load input signal loading the first 16-bit word into the Transmitter memory and ini-

tiates data transfer into the memory stack.

30

TX/R

Transmitter

Transmitter flag output to indicate the memory is empty.

HS-3282