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I2C multi-master with USBi and microcontroller

Question asked by wygonski on May 14, 2015
Latest reply on May 15, 2015 by wygonski

We are debugging ADAU1701 algorithms on our custom target hardware using SigmaStudio and USBi.   Our target hardware also has a microcontroller as I2C master connected to ADAU1701.  The microcontroller implements DSP Readback functions from the DSP as part of a control loop, and we would like to tune the DSP parameters in real-time with SigmaStudio with the microcontroller in the loop.


Can the USBi as an I2C master interact with the DSP along with the microcontorller?


I know that I2C protocol supports multi-master--I am asking whether the USBi implements this.  I looked at AN-1006, "Using the EVAL-ADUSB2EBZ app note but it was silent on this topic as far as I could tell.