Just got an MSP430FR5739 board to do some testing; also got all the latest software. Unfortunately, the one thing we need it for is the one thing least documented: IrDA. The chip says it has an encoder/decoder built in, and shows register addresses, but that's about it. No sample code, no register use chart. Also, there doesn't see to be a physical transceiver on the board. TI's own transceivers seem to be all marked "obsolote". So my question is: what extra hardware do I need to test IrDA functions with this board, and is there better documentation for the encoder/decoder somewhere (perhaps with another chip)?