摘要
介绍了基于Si473x的嵌入式收音机模块的软硬件设计方法。得益于Si473x内置DSP的先进数字低中频架构,该模块仅需要数个外围元件,且无需人工调校,便能实现从天线输入到音频输出的所有AM/FM接收功能。此外,该模块具有体积小、质量轻、支持多种串行控制方式等优点,因此容易嵌入到各种小型便携设备中。实验结果表明,该模块具有良好的灵敏度、选择性以及优秀的电台搜索能力。
Design of embedded AM/FM receiver based on Si473x is proposed. With advanced digital low-IF architecture and DSP processor, the complete AM/FM tuner function from antenna input to audio output can be realized without factory adjustments. In addition, this receiver has advantages of small size and light weight, and supports several serial control modes. It can be easily applied in many portable mini/micro systems. The results show that the receiver has good selectivity and sensitivity, and excellent seek tuning ability.
出处
《电声技术》
2009年第2期32-35,共4页
Audio Engineering
