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external SPI control of eval board AD7794

Question asked by efferre on May 20, 2015
Latest reply on Jun 4, 2015 by efferre

I have an eval board of the AD7794 ADC.

 

I want to program and use the AD7794 using an external microcontroller driving directly the SPI pins. The USB microcontroller on the eval board is driving the chip using the SPI lines, I'm wondering if the USB microcontroller lines are left in high impedance state when the board is not connected to a personal computer? Or should I force the reset of the USB micro?

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