Com3 And Com4 Wafer Connectors (Cn3 And Cn4); Audio Connector (Cn5); Digital I/O Connector (Cn6) - AXIOMTEK CAPA312 User Manual

2.4.3

COM3 and COM4 Wafer Connectors (CN3 and CN4)

The CN3 and CN4 are 2x5-pin connectors for COM4 and COM3 interface, respectively.
Only COM3 is equipped with +5V level power capability on DCD and +12V level on RI by
setting JP4 (see section 2.3.2).
Pin Signal
1 DCD
3 RXD
5 TXD
7 DTR
9 GND
2.4.4

Audio Connector (CN5)

This is a 2x5-pin connector for audio interface.
Pin Signal
1 MIC_IN
3 LINE_IN_L
5 LINE_IN_R
7 AUDIO_OUT_L
9 AUDIO_OUT_R
2.4.5

Digital I/O Connector (CN6)

This is a 2x5-pin (pitch=2mm) connector. The board is equipped with an 8-channel (4
inputs and 4 outputs) digital I/O that meets requirements for a system customary
automation control. The digital I/O can be configured to control cash drawers and sense
warning signals from an Uninterrupted Power System (UPS), or perform store security
control. You may use software programming to control these digital signals, please refer
to Appendix B.
Pin Signal
1 Digital Input 1
3 Digital Input 2
5 Digital Input 3
7 Digital Input 4
9 +5V
Board and Pin Assignments
Pin Signal
2 DSR
4 RTS
6 CTS
8 RI
10 No use
Pin Signal
2 GND
4 GND
6 GND
8 GND
10 GND
Pin Signal
2 Digital Output 8
4 Digital Output 7
6 Digital Output 6
8 Digital Output 5
10 GND
CAPA312 3.5" Board
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