A reader sent me some measurements on the I2S lines with the latest driver. The first picture is with Fast Mode and the second picture is with Precision Mode. I think the error of 4 Hz is probably due to probe or calibration as the theoretical deviation in fast mode is 17 Hz (The measurement shows 21 Hz deviation)
In addition, he measured the LRCK signal in an oscilloscope. The waveform looks very clean. Note: device is powered with an external low noise regulator (not USB power)
44.1K Waveform
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