SP504AN

SP504 Application Note

© Copyright 2000 Sipex Corporation

6

DTE/DCE Serial Port Configuration with the SP504

78

21

79

24

17

22

TxD

TxC

DTR

RTS

RxD

RxC

CTS

DCD

2 3 4 5 12 11 10 9

2345 12 11 10 9

14

15

13

16

1

20

80

19

DSR

RI

SCT

LL

RL

ST

78

21

79

24

17

22

61

SD(A)

SD(B)

TT(A)

TT(B)

TR(A)

TR(B)

RS(A)

RS(B)

RT(A)

RT(B)

RD(A)

RD(B)

CS(A)

CS(B)

RR(A)

RR(B)

DM(A)

DM(B)

SCT(A)

SCT(B)

IC(A)

IC(B)

LL(A)

LL(B)

ST(A)

ST(B)

SP504

DTE

Config.

SP504

DCE

Config.

59

63

65

58

56

54

52

70

71

37

38

66

67

35

36

68

69

76

77

39

40

51

49

42

44

61

59

63

65

58

56

54

52

70

71

37

38

66

67

35

36

68

69

76

77

40

39

51

49

42

44

47

RL(A) 47

TxD

TxC

DTR

RTS

RxD

RxC

CTS

DCD

14

15

13

16

1

20

80

19

DSR

RI

SCT

LL

RL

ST

SD(A)

SD(B)

TT(A)

TT(B)

TR(A)

TR(B)

RS(A)

RS(B)

RT(A)

RT(B)

RD(A)

RD(B)

CS(A)

CS(B)

RR(A)

RR(B)

DM(A)

DM(B)

SCT(A)

SCT(B)

IC(A)

IC(B)

LL(A)

ST(A)

ST(B)

RL(A)

LL(B)

0

0

0

0

2 34 5 12 11 10 9

14

15

13

16

1

20

80

19

78

21

79

24

17

22

61

59

63

65

58

56

54

52

70

71

37

38

66

67

35

36

68

69

76

77

40

39

51

49

42

44

47

0

1

1

0

TxD

TxC

DTR

RTS

RxD

RxC

CTS

DCD

DSR

RI

SCT

LL

RL

ST

SD(A)

SD(B)

TT(A)

TT(B)

TR(A)

TR(B)

RS(A)

RS(B)

RT(A)

RT(B)

RD(A)

RD(B)

CS(A)

CS(B)

RR(A)

RR(B)

DM(A)

DM(B)

SCT(A)

SCT(B)

IC(A)

IC(B)

LL(A)

LL(B)

ST(A)

ST(B)

RL(A)

SP504

DCE

Config.

0

1

1

0

DB-37 Connector

DB-37 Connector

(V.35 150

Ω termination resistors not shown)