SP502 datasheet(15/32 Pages) SIPEX

15 / 32 page

Rev. 7/21/03

SP502 Multi-Mode Serial Transceiver

Figure 8. Mode Diagram — V.35

RD(a) 70

RxD 1

RD(b) 71

MODE: V.35

DRIVER

RECEIVER

TDEC3 TDEC2 TDEC1 TDEC0 RDEC3 RDEC2 RDEC1 RDEC0

RT(a) 37

RxC 20

RT(b) 38

13 DTR

58 TR(a)

CS(a) 66

CTS 80

16 RTS

54 RS(a)

DM(a) 68

DSR 78

17 RL

47 RL(a)

RR(a) 35

DCD 19

24 LL

51 LL(a)

IC(a) 39

RI 21

RxT 79

14 TxD

61 SD(a)

59 SD(b)

15 TxC

42 ST(a)

44 ST(b)

6 ST/TT

63 TT(a)

65 TT(b)

ST/TT

RxT*

Enabled

Disabled

Active

Disabled

Enabled

Inactive

* TT driver must be disabled to allow TT(a) and TT(b)

to serve as receiver inputs.

* When the RxT receiver is active, TT(a) and TT(b) act

as receiver inputs. When the RxT receiver is inactive,

it cannot serve as a receiver since its inputs are internally

connected to the TT(a) and TT(b) driver outputs.

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