Kontron mITX-E38 - Manual (Page 32)

KTD-N0903-A Page 30 Internal Connectors
mITX-E38 Users Guide
Serial COM Ports (COM1-6, J19, J18, J37, J38, J10, J9) 7.9
Six RS232 serial ports are available via 10-pin-row connectors.
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.
Note 1: The COM1/COM2 5V supply is fused with common 1.5A resettable fuse and similar for COM3/COM4
and COM5/COM6.
Available cable kit DB9 adapter cables are available for implementing standard COM ports on chassis.
PN 821017 - 100 mm or PN 821016 - 200 mm
Note Ioh/Iol Type Signal PIN Signal Type Ioh/Iol Note
- I DCD 1 2 DSR I -
- I RxD 3 4 RTS O
O TxD 5 6 CTS I -
O DTR 7 8 RI I -
- PWR GND 9 10 5V PWR - 1