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Altera_Forum
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14 years ago

DE2-115/tPad and RS-232

Hello, I've been fiddling a bit with this lately, interfacing with the UART chip on this board, and running into some strange problems. As far as I can see there are 4 ports/pins available...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

The UART is a "Universal Asynchronous Receiver Transmitter". It is a block that will format data in a serial way to send out and also decode it to receive it. The UART takes care of formatting the data in the right sequence (start, stop, parity, data bits) and at the standard speeds (baud rate)

On the DE2-115 you also have a RS232 level shifter changing the voltage levels of the DE2-115 (3.3 Volt I suppose) to the positive and negative voltages required by RS232.