AD9102 SPI clock polarity

Thanks, Larry,

I had already gotten the chip to work by assuming this, but it's good to get confirmation that this wasn't just accidental.  To date, this remarkable chip seems to be performing as expected with one minor exception.  I can't get the built-in random noise generator to do anything except to randomly jump between two discrete values, rather than randomly selecting among all 2^14 output values as I had expected.  Is there something that needs to be configured other than setting the AD9102 for continuous waveform generation, selecting the pseudorandom sequence with the WAV_CONFIG register (0x27), and setting the gains to reasonable values?

My actual requirements need only the arbitrary waveform generator and the DDS, not this built-in pseudorandom noise feature.  It's just one of those things that seems like it ought to work, and it would be nice to know it's available.

  -Ed

Thanks, Larry,

I had already gotten the chip to work by assuming this, but it's good to get confirmation that this wasn't just accidental.  To date, this remarkable chip seems to be performing as expected with one minor exception.  I can't get the built-in random noise generator to do anything except to randomly jump between two discrete values, rather than randomly selecting among all 2^14 output values as I had expected.  Is there something that needs to be configured other than setting the AD9102 for continuous waveform generation, selecting the pseudorandom sequence with the WAV_CONFIG register (0x27), and setting the gains to reasonable values?

My actual requirements need only the arbitrary waveform generator and the DDS, not this built-in pseudorandom noise feature.  It's just one of those things that seems like it ought to work, and it would be nice to know it's available.

  -Ed