Serial Com1 Port (J22); Table 21: Pin Assignment Serial Com1 Port (J22); Figure 17: Serial Com 1 - Kontron mITX-SKL-H User Manual

8.8. Serial COM1 Port (J22)

The mITX-SKL-H supports one RS232 serial port.

Figure 17: Serial COM 1

Table 21: Pin Assignment Serial COM1 Port (J22)

Pin Signal Type
1
DCD I
2
DSR I
3
RxD I
4
RTS O
5
TxD O
6
CTS I
7
DTR O
8
RI I
9
GND PWR
10
5V PWR
Signal Description
Signal Description
TxD
Transmitted Data, sends data to the communications link. The signal is set to the marking state
(-12 V) 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.
GND
Power Supply GND signal
DB9 adapter cables are available to implement standard COM ports on chassis.
Available Cable Kit (DB9 adapter cables)
9 7 5
10 8 6
Ioh / Iol Pull U / D Note
PN 821017 - 100 mm or PN 821016 - 200 mm
www.kontron.com
3 1
4 2
The COM1 5 V supply is fused with common
1.5 A resettable fuse.
mITX-SKL-H – User Guide, Rev.1.1
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