In a very similar vein we can connect to an audio DAC, a D to A converter. Here’s the 1854 connecting to the Blackfin. Again the SPI interface, the Blackfin configures and controls the converter, and this time of course the data is flowing in the other direction. The SPORT sends the audio to be made in analog form, sends it over the SPORT to the 1854, the 1854 converts it and then sends it out for output on speaker or some other medium.