AXIOMTEK CAPA311, User Manual

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CAPA311/312 3.5
” Board
18 Board and Pin Assignments
2.4.13 COM1 and COM2 Wafer Connector (CN17 and CN18)
The CN17 (optional) and CN18 are 2x5-pin connectors for COM1 and COM2 interface,
respectively. The pin assignments of RS-232/422/485 are listed in table below. If you
need COM1 and COM2 to support RS-422 or RS-485 communication mode, please
refer to BIOS setting in section 4.4.
2.4.14 HDMI Connector (CN19)
The HDMI (High-Definition Multimedia Interface) is a compact digital interface which is
capable of transmitting high-definition video and high-resolution audio over a single
cable. Its interface is available through connector CN19.
Pin RS-232 RS-422 RS-485
1 DCD TX- Data-
2 DSR No use No use
3 RXD TX+ Data+
4 RTS No use No use
5 TXD RX+ No use
6 CTS No use No use
7 DTR RX- No use
8 RI No use No use
9 GND No use No use
10 No use No use No use
Pin Signal Pin Signal
1 HDMI OU 2 GND
3 HDMI OUT_DATA2- 4 HDMI OU
5 GND 6 HDMI OUT_DATA1-
7 HDMI OU 8 GND
9 HDMI OUT_DATA0- 10 HDMI OU
11 GND 12 HDMI OUT_Clock-
13 N.C. 14 N.C.
15 HDMI OUT_SCL 16 HDMI OUT_SDA
17 GND 18 +5V
19 HDMI_HTPLG