基于S3C2410A和UDA1341TS的嵌入式音频系统设计

介绍了基于S3A2410A和UDA1341TS语音编解码芯片的嵌入式音频系统的设计方案;首先介绍了音频编解码的基本理论和IIS总线协议、IIS总线和MSB-justified总线的时序区别;研究了S3C2410A的IIS总线接口,UDA1341TS的内部结构特点和IIS总线、L3总线,分析了UDA1341TS的工作模式,给出了S3C2410A和UDA1341TS的IIS总线接口以及L3总线接口电路设计方案,并分析了录音和播放音频的程序的设计方法;该嵌入式音频系统设计实现了录音、播放,调节音频效果等功能,利用多个小块缓冲区,提高了提高系统整体性能;文中提出的嵌入式音频电路以及音频处理程序已成功应用于E-BOOK等手持终端设备上,具有通用性和参考价值。

Design of Embedded Audio System Based on S3C2410A and UDA1341TS

T design of embedded audio system based on S3C2410A&UDA1341TS is introduced. First , the paper introduce the theory of audio CODEC and IIS protocol, the difference between IIS protocol and MSB-justified protocol . Then the paper study the structure of UDA1341TS , the IIS interface and L3 bus , the IIS interface of S3C2410A , analyze the two different modes of UDA1341TS . The hardware design of IIS and L3 bus interface based on S3C2410A&UDA1341TS is put forward besides the design of record and play audio program. The design of embedded audio system realize the functions of record, play audio and tune up, the design enhance the system' s performance through using multi -buffer . The design of the hardware and software of the embedded audio system have been used on many mobile terminals successfully , and it' s general and can be a good reference .