Hello......
I have A Processor of R2A15218FP Audio Processor 8channel And 2 Wired Data Control Processor....But it doesn't have any Datasheet to register and Making Code for Arduino......How to Create A Code For that Aduio Processor
You either need to track down some documentation or will have to spend a lot of time trying to reverse engineer the behavior of the chip, which will not be easy and very likely not successful, especially if you don't have several of them in case you damage some while testing it.