After some hours of debugging and fixing a hardware problem, the DSP hardware seems to work now.
There are still cables soldered for I2C debugging purposes, but writing to the DSP works without problems now. I still have to work on reading data back from the DSP. Therefore the debug cables are still soldered. You also see, that the voltage regulator at the bottom is not used yet. I will do some comparison tests with a separate voltage regulator for the analog circuit.
I created a simple DSP program that generated different waveforms on the different output. Let’s see what happens on the output:
Looks good! The DSP now runs at 48kHz, therefore the triangle waveform is not exactly a triangle. But that’s what you would expect.