ACCULINK 316x DSU/CSU

RS449 Port Interface

Connector

The RS449 Port Interface connector information is shown in Table D-8 and Figure D-7.

Table D-8

RS449 Port Interface Connector

Signal

Circuit

CCITT

Direction

Pin

Mnemonic

Number

 

 

 

 

 

 

 

 

Shield

Ð

Ð

Ð

1

 

 

 

 

 

Signal Ground

SG

102A

Ð

19

 

 

 

 

 

Receive Ground

RC

102B

Ð

20

 

 

 

 

 

Send Common

SC

Ð

Ð

37

 

 

 

 

 

Send Data

SD

103

To DCE

4 (A)

 

 

 

 

22 (B)

 

 

 

 

 

Receive Data

RD

104

From DCE

6 (A)

 

 

 

 

24 (B)

 

 

 

 

 

Request-to-Send

RS

105

To DCE

7 (A)

 

 

 

 

25 (B)

 

 

 

 

 

Clear-to-Send

CS

106

From DCE

9 (A)

 

 

 

 

27 (B)

 

 

 

 

 

Receiver Ready

RR

109

From DCE

13 (A)

 

 

 

 

31 (B)

 

 

 

 

 

Data Mode

DM

107

From DCE

11 (A)

 

 

 

 

29 (B)

 

 

 

 

 

Terminal Ready

TR

108/1, /2

To DCE

12 (A)

 

 

 

 

30 (B)

 

 

 

 

 

Terminal Timing

TT

113

To DCE

17 (A)

 

 

 

 

35 (B)

 

 

 

 

 

Send Timing

ST

114

From DCE

5 (A)

 

 

 

 

23 (B)

 

 

 

 

 

Receive Timing

RT

115

From DCE

8 (A)

 

 

 

 

26 (B)

 

 

 

 

 

Local Loopback

LL

141

To DCE

10

 

 

 

 

 

Remote Loopback

RL

140

To DCE

14

 

 

 

 

 

Test Mode

TM

142

From DCE

18

 

 

 

 

 

D-10

December 1996

3160-A2-GB22-10

Page 174
Image 174
Paradyne 316x manual Table D-8 RS449 Port Interface Connector Signal Circuit