:o Been looking for a fast 8+ bit DAC similar to ... AD5330.
It seems all the 3v and 5v compatible ones are in SIOC and small packages.
Have an MCP4921 atm and it works well (software bit banged) however I want to put sound with video output so need the sound to be as fast as possible (hence parallel)
My benchmarking on 22050Hz audio showed SD card read was 15%, DAC output was ~20% and other was 5% of total CPU when playing on the Arduino Due.
Anyone one had experience with the AD5330?
Although I have DMA/SPI working well the sound output is in an interrupt and I don't want to be sorting out SPI interrupt conflicts :o
Other question I have is ... If I dedicate 8 outputs d0-d7 for the DAC can I reuse these same pins for another 8 bit parallel device given the CS line for the DAC has to go low for it to take any notice? I assume I can unless I'm missing something.