The P4 Mainboard Series
Page 35
UART Mode Select
Your system may offer a variety of infrared modes on the second serial
port. The options are Standard, HPSIR or ASKIR.
RxD, TxD Active
This field allows you to set the IR reception/transmission polarity as high or
low. To determine which polarity is appropriate you must refer to the docu-
mentation for your IR peripheral.
This field is usually found under the Onboard Serial Port 2 option. If you
disable the Onboard Serial Port 2 option then you will probably not be able
to configure this field.
IR Transmission Delay
This field allows you to “Enable” or “Disable” the IR Transmission Delay.
UR2 Duplex Mode
This field appears in an infrared port mode. You have two options: half or
full duplex function. The full duplex mode allows bi-directional transmission
at a single time where as the half duplex mode only allows transmission in
one direction at a time. This setting depends on the nature of your IR pe-
ripheral device. Check the IR device’s manual to determine the appropriate
setting.
Use IR Pins
To determine the correct settings for the TxD and RxD signals of your IR
peripheral component, you need to consult the components manual.
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