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CA Series PC/104
Under Port Number, select a COM number to assign to the serial port. Select Auto Enumerating COM
Number to map subsequent ports in numerical order. For example, if COM 3 is assigned to Port 1, then COM
4 will be automatically assigned to Port 2.
4. Select an Rx FIFO Trigger and Tx FIFO Size. The default Rx FIFO Trigger is 120 bytes (high level). The
default Tx FIFO Size is 128 bytes (high level). Select Set the change to all ports to use this setting for all
serial ports on the board.
High
Middle
Low
5. Click OK to approve the settings for the selected port. Continue in the same way to configure the other ports.
When you have finished setting up the ports, click OK to close the Properties window and apply the new port
settings. Click OK again to close the Device Manager and restart the system.
Updating the Driver
You may configure the COM ports after the board and drivers have been installed.
1. In the Windows Control Panel, open the System applet.
TxFIFO
RxFIFO
128
120
64
60
1
1
3-34
Software Installation
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