基于SPI协议的音频流解码系统的研究与设计

摘要

The paper introduced SPI communication protocol, proposed a design scheme of audiostream decoding system by use of ARM-controller LPC2368 and voice-processing chip VS1003, and described structure, transmission theories of SCI and SDI of the system and design of key codes of the system's software in details. The system can realize playing function of audio-analog signals perfectly by initialization debugging and sine-wave testing.%介绍了SPI通信协议,提出了一种采用ARM控制器LPC2368与VS1003语音处理芯片的音频流解码系统的设计方案,详细介绍了系统架构、SCI与SDI传输原理以及系统软件关键代码的设计.通过初始化调试与正弦波测试,该系统能够较好地实现音频模拟信号的播放功能.