AXIOMTEK SHB250R, Руководство пользователя

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SHB250R Intel LGA1151 Processor PICMG1.3 Half-size CPU Board
Board Layout and Pin Assignments 19
2.4.13 COM Connectors (COM1~COM2)
This pin header which is compliant with CATCH 1167-010-20MR. The COM port supports
RS-232/RS-422/RS-485 mode operation, see table below for its pin assignments. You
can change the transmission mode via BIOS setting.
Pin RS-232 RS-422 RS-485
1
Data Carrier Detect
(DCD1)
TX1- DATA1-
2 Data Set Ready (DSR1) NC NC
3 Receive Data (RXD1) TX1+ DATA1+
4 Request to Send (RTS1) NC NC
5 Transmit Data (TXD1) RX1+ NC
6 Clear to Send (CTS1) NC NC
7
Data Terminal Ready
(DTR1)
RX1-
NC
8 Ring Indicator (RI1) NC NC
9 Ground (GND) GND GND
10 Disconnect (NI) NI NI
11 Data Carrier Detect
(DCD2)
TX2- DATA2-
12 Data Set Ready (DSR2) NC NC
13 Receive Data (RXD2) TX2+ DATA2+
14 Request to Send (RTS2) NC NC
15 Transmit Data (TXD2) RX2+ NC
16 Clear to Send (CTS2) NC NC
17 Data Terminal Ready
(DTR2)
RX2-
NC
18 Ring Indicator (RI2) NC NC
19 Ground (GND) GND GND
20 Disconnect (NI) NI NI