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KTD-S0005-C Page 18 Serial Port Interfaces

MOPSlcdLX User's Guide

9 Serial Port Interfaces

Two fully functional serial ports (COMA and COMB) provide asynchronous serial communications. COMA and

COMB support RS-232 operation modes. They are 16550 high-speed UART compatible and support 16-byte

FIFO buffers for transfer rates from 50 Baud to 115.2 KBaud.

9.1 Connector

COMA is available through the X15000 connector (10 pins) and COMB through the X15001 connector (10

pins). To have the signals available on the standard serial interface connector DSUB9 an adapter cable is

required.

A 9 pin DSUB cable is available from KONTRON (KAB-DSUB9-2, part number 96017-0000-00-0). The fol-

lowing table shows the pinouts for COMA and COMB as well as necessary connections for DSUB adapters.

Header Pin Signal Name Function DSUB9

1 /DCD Data carrier detect 1

2 /DSR Data set ready 6

3 RXD Receive data 2

4 /RTS Request to send 7

5 TXD Transmit data 3

6 /CTS Clear to send 8

7 /DTR Data terminal ready 4

8 /RI Ring indicator 9

9 GND Ground 5

VCC

Power +5V ---

Note: 1) To protect the external power lines of peripheral devices make sure that

- the wires have the right diameter to withstand the maximum available current.

- to enclosure of the peripheral device fulfills the fire-protecting conditions of IEC/EN 60950.

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