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Interfacing ADRF6620 with Ardunio, Rpi or Odroid via Spi

     I have a project about indoor positioning. I have ADRF6620 mixer and I design PCB and print it. Now I want to interface mixer with Ardunio, Raspberry Pi or ODROID. ADRF6620 has bi-directional 3-wire SPI. I have made some search on google and Rpi bi-directional mode not available. For Ardunio I see just example. Is it possible to interface ADRF6620 with Ardunio, Odroid or Rpi? Also I have some question about ADC. I have cirrus logic WM8224 ADC which use for Video and has 3-Channel for RGB. Can I interface mixer output with WM8224 and use single channel? You can see ADC datasheet on attachment.

  

     Happy New Year!

     Best Regards

     Suat Yetiş

WM8224_v4.2.pdf
  • Hi Suat,

    The SPI specifications are defined within the datasheet for both the controller and the ADRF6620. You have to refer to the datasheets of the microcontrollers to check the 3-wire SPI mode. I would advise to check for the timing constraints and the compatible logic levels. For interfacing with the ADC, I would advise to check for the input impedance of the ADC and full scale input level. I hope this answers your questions.

    Regards,

    Gokhan

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