I fixed a wiring error on the board I was having problems with. I now get 2 of the 3 outputs I expect to get from the chip. The ADC is giving me the BCLK and the LRCLK that I expect but I still don't see any data on DOUT.
I'm using an electric guitar as my analog input. This has two implications for me: first, the signal from the guitar is a pretty low-level analog signal. This shouldn't prevent me from seeing data coming from the ADC, however. The other problem is that I need to strum the guitar to generate a signal, and strumming while holding an oscilloscope probe can be an exercise in manual dexterity. I'm thinking of building an analog waveform generator to use as a test input signal while I do further troubleshooting.
I'm going to pore over the datasheet to try to figure out why I'm not getting any output on the DOUT pin. Hopefully I missed something simple.