B.2.1. Serial interface connectors

The pinout of the serial ports is shown in Figure B.3 and Table B.3.

Figure B.3. Serial interface connector pinout

Table B.3. Serial interface signal descriptions

Pin

Signal

Type

Function

1

DCD

Input

Data carrier detect

2

Rx

Input

Receive

3

Tx

Output

Transmit

4

DTR

Output

Data terminal ready

5

GND

-

Ground

6

DSR

Input

Data set ready

7

RTS

Output

Ready to send

8

CTS

Input

Clear to send

9

RI

InputRing indicator

Note

The serial interfaces signals operate at RS232 signal levels.

Serial port functionality corresponds to the DTE configuration.

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