Kontron KTA70M-mITX Manuel d'utilisateur télécharger pdf (Page 37)

KTD-N0861-B Page 30 Pin Connectors

KTA70M/mITX Users Guide

7.7 COM1/COM2 (J23/J22)

Two serial ports provide asynchronous serial communication via RS-232 interfaces. The connector is type

Pinrex 512-90-10GBE5 or similar.

The pinout of Serial ports COM1 and COM2 is as follows:

Note

Ioh/Iol

Type

Signal

Type

Ioh/Iol

Note

DCD

DSR

RxD

RTS

TxD

CTS

DTR

PWR

GND

PWR

Note 1: The COM1 and COM4 5V supply is fused with a common 1.1A resettable fuse.

The typical definition of the signals in the COM ports is as follows:

Signal Description

TxD

Transmitted Data, sends data to the communications link. The signal is set to the marking state (-

12V) on hardware reset when the transmitter is empty or when loop mode operation is initiated.

RxD Received Data, receives data from the communications link.

DTR

Data Terminal Ready, indicates to the modem etc. that the on-board UART is ready to establish a

communication link.

DSR Data Set Ready, indicates that the modem etc. is ready to establish a communications link.

RTS Request To Send, indicates to the modem etc. that the on-board UART is ready to exchange data.

CTS Clear To Send, indicates that the modem or data set is ready to exchange data.

DCD Data Carrier Detect, indicates that the modem or data set has detected the data carrier.

RI Ring Indicator, indicates that the modem has received a ringing signal from the telephone line.

Available cable kit (DB9 adapter cables):

PN 821017 - 100 mm or PN 821016 - 200 mm

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Kontron KTA70M-mITX Manuel d'utilisateur Page 37