Other Parts Discussed in Thread: PCM5242
I'm about to start experimenting with custom filters on the PCM5142.
The datasheet says:
"184.108.40.206 Interpolation Filter The PCM514x provides 4 types of interpolation filters, selectable by writing to Page 0, Register 43, D(4:0). Additional RAM based Hybrid Flows can be implemented by selecting Program 31, and downloading instructions and coefficients to the device."
But PurePath (2.1 for PCM5242) does not have settings for custom FIR filters.
Please let me know how to start exploring custom interpolation filters.
In my application I have custom C code that accesses the PCM5142 over I2C. It is straightforward to write the contents of a data structure to the DAC. But it will be a bit more tricky to have PurePath connected live to the DAC.