Rev. 8/28/03

SP3508 Evaluation Board Manual

© Copyright 2003 Sipex Corporation

7

TABLE 1.

EIA-232

EIA-530

EIA-449

V.35

X.21

Signal Name

source

Mnemonic

Pin

Mnemonic

Pin

Mnemonic

Pin

Mnemonic

Pin

Mnemonic

Pin

Shield

—

—

1

—

1

—

1

—

A

—

1

Transmitted data

DTE

BA

2

BA(A)

2

SD(A)

4

103

P

Circuit T(A)

2

BA(B)

14

SD(B)

22

103

S

Circuit T(B)

9

Received Data

DCE

BB

3

BB(A)

3

RD(A)

6

104

R

Circuit R(A)

4

BB(B)

16

RD(B)

24

104

T

Circuit R(B)

11

Request To Send

DTE

CA

4

CA(A)

4

RS(A)

7

105

C

Circuit C(A)

3

CA(B)

19

RS(B)

25

Circuit C(B)

10

Clear To Send

DCE

CB

5

CB(A)

5

CS(A)

9

106

D

Circuit I(A)

5

CB(B)

13

CS(B)

27

Circuit I(B)

12

DCE Ready (DSR) DCE

CC

6

CC(A)

6

DM(A)

11

107

E

CC(B)

22

DM(B)

29

DTE Ready (DTR)

DTE

CD

20

CD(A)

20

TR(A)

12

108

H*

CD(B)

23

TR(B)

30

Signal Ground

—

AB

7

AB

7

SG

19

102

B

Circuit G

8

Recv. Line Sig.

DCE

CF

8

CF(A)

8

RR(A)

13

109

F

Det. (DCD)

CF(B)

10

RR(B)

31

Trans. Sig.

DCE

DB

15

DB(A)

15

ST(A)

5

114

Y

Circuit S(A)

6

Elemt. Timing

DB(B)

12

ST(B)

23

114

AA

Circuit S(B)

13

Recv. Sig.

DTE

RL

17

DD(A)

17

RT(A)

8

115

V

Circuit B(A)**

7

Elemt. Timing

DD(B)

9

RT(B)

26

115

X

Circuit B(B)**

14

Local Loopback

DCE

DD

18

LL

18

LL

10

141

L*

Remote Loopback

DTE

LL

21

RL

21

RL

14

140

N*

Ring Indicator

DCE

CE

22

—

—

—

—

125

J*

Trans. Sig.

DTE

DA

24

DA(A)

24

TT(A)

17

113

U*

Circuit X(A)**

7

Elemt. Timing

DA(B)

11

TT(B)

35

113

W*

Circuit X(B)**

14

Test Mode

DCE

TM

25

TM

25

TM

18

142

NN*

* Optional signals

** Only one of the two x.21 signals, Circuit B or X, can be implemented and active at one time.