silicon labs si4730/31收音机代码，支持FM/AM收音功能，可用于设计单芯片，外围电路非常简单的收音头。-silicon labs si4730/31 radio code, support for FM/AM radio function, can be used to design a single chip, the external circuit is very simple radio head.

silicon 公司SI47XX类型收音IC开发官方应用文档-silicon SI47XX develop aap note

SI4702-4703 demo source code。-SI4702-4703 demo source code.