Kontron MITX-CFL0 Series, Руководство пользователя

Страница: 44 / 104

MITX-CFL0 Series - User Guide, Rev. 1.1
www.kontron.com
// 44
7.8. Serial COM 1 - COM 4 Ports (COMA, COMB, COMC & COMD)
The serial connections COMA, COMB, COMC and COMD provide RS232 connections.
Figure 24: Serial COM COMA, COMB, COMC, COMD
Table 29: Pin Assignment COMA, COMB, COMC, COMD
Pin RS232 Signal Note
1 DCD
2 DSR
3 RXD
4 RTS
5 TXD
6 CTS
7 DTR
8 RI
9 GND
10 +5V
The COM ports need to install an OS patch from ITE. The patch is only available for
Windows and is not available Linux.
Table 30: Serial COM 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 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.