In this paper, the digital interface of the audio signal based on the chip of the DSP56F826 and the digital stereo CODEC CS4218 is introduced. Some programs and the interface design of the application electro circuit are given.

• 介绍了16bit立体声数字音频信号编解码器CS4218与DSP56F826芯片组成的音频信号数字处理接口,给出了相应的应用电路接口设计和部分软件框图。