SP504EB datasheet(6/18 Pages) SIPEX

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504/505 AppNote/03

New SP504/505 Evaluation Board

SP504 Pin Assignments (cont)

Pin #

Pin Name

Pin Function

Pin Description

Control Line Group

DTR

TTL Input

Data terminal ready DTR driver.

RTS

TTL Input

Ready to send RTS driver.

TTL Input

Remote loopback RL driver.

V35_STAT

TTL Output

Outputs logic high in V.35 mode.

DCD

TTL Output

Data carrier detect DCD receiver.

TTL Output

Ring indicate RI receiver.

TTL Input

Local loopback LL driver.

RR(a)

Analog Input

Data carrier detect DCD receiver.

RR(b)

Analog Input

Data carrier detect DCD receiver.

IC(a)

Analog Input

Incoming call RI receiver.

IC(b)

Analog Input

Incoming call RI receiver.

RL(b)

Analog Output

Remote loopback RL driver.

RL(a)

Analog Output

Remote loopback RL driver.

LL(b)

Analog Output

Local loopback LL driver.

LL(a)

Analog Output

Local loopback LL driver.

RS(b)

Analog Output

Ready to send RTS driver.

RS(a)

Analog Output

Ready to send RTS driver.

TR(b)

Analog Output

Terminal ready DTR driver.

TR(a)

Analog Output

Terminal ready DTR driver.

CS(a)

Analog Input

Clear to send CTS receiver.

CS(b)

Analog Input

Clear to send CTS receiver.

DM(a)

Analog Input

Data mode DSR receiver.

DM(b)

Analog Input

Data mode DSR receiver.

DSR

TTL Output

Data set ready DSR receiver.

CTS

TTL Output

Clear to send CTS receiver.

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