This repo is part of my larger put an SBC inside an original iPad. The goal of this component is to translate the PCM/I2S input/output of the Raspberry Pi CM4 to the iPad's headphone jack and internal speakers. (And possibly the line-out pins on the 30-pin connector.)
Eventually this may end up on a single board with the other parts of the project, but for now this will be a separate board that surrounds the touchscreen controller.