Hi,
Although we use SPI interface, we do not readback register values.
Then, could you please tell us pin processing of MDO at unused?
If we pull down MSEL pin to gnd and supply the required power to PCM1795, MDO pin is a cmos output and this output is Hi-z.
Therefore, we believe that MDO may be opened.
Is our understanding correct?
Best Regards,
Kato