AXIOMTEK PICO300, User Manual

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PICO300 Pico-ITX Board
58 I/O Boards (Optional)
A.5 AX93275 Jumper Settings
Properly configure jumper settings on the AX93275 I/O board to meet your application purpose.
Below you can find a summary table of all jumpers and onboard default settings.
Note
Once the default jumper setting needs to be changed, please do it under power-off
condition.
Jumper Description Setting
JP1
COM1 Data/Power Selection
Default: RS-232 Data
CN6B Pin 1: DCD 3-5 Close
CN6B Pin 9: RI 4-6 Close
A.5.1 COM1 Data/Power Selection (JP1)
The COM1 port has +5V level power capability on DCD and +12V level on RI by setting
JP1. When this port is set to +12V or +5V level, please make sure its communication
mode is RS-232 (see BIOS setting in section 4.4).
Function Setting
Power: Set CN6B pin 1 to +5V level 1-3 close
Data: Set CN6B pin 1 to DCD (Default) 3-5 close
Power: Set CN6B pin 9 to +12V level 2-4 close
Data: Set CN6B pin 9 to RI (Default) 4-6 close