Pico Class (Arduino IDE) for the IIS MA12070P based amplifier board from Shenzhen Pillor
See https://www.diyaudio.com/community/threads/infineon-ma12070-class-d.347422/page-103 for a thread regarding this amp. The configuration in the .h file retains the left-justified default as the code was tested using the AD1896 board that converts between formats. Make the appropriate changes 0x35 and 0x36 registers for use natively with the RPi or Squeezelite-ESP32. I will try to add these when I get around to testing these platforms without the AD1896 board.
The Arduino IDE based .ino file has some simple code to demonstrate it's use. Note: This was developed specifically for a RPi Pico so some minor editsz may be necessary for Arduino platforms - notable to Wire usage and GPIO definitions.