基于51单片机的数字FM收音机
设计与实现
XXXX大学毕业设计（论文） 摘 要
现在人们常使用的收音机为手动调频收台，使用较为麻烦，而且由于接收
灵敏度不高，所接收的频段较窄。TEA5767具有高性能的RF AGC电路，其接收灵敏度高、参考频率选择灵活、可实现自动搜台。本课题采用STC89C52单片机和TEA5767为核心器件，用I2C通信方式联接单片机与TEA5767，实现数字FM收音机系统。通过编写软件利用单片机控制TEA5767实现手动活自动调频，收到的信号通过TAD2822功放器件放大后，再用扬声器输出信号。在调频的过程中可以通过LCD1602液晶显示屏来随时查看信号的频率。 关键词：数字调频； STC89C52； TEA5767； TDA2030
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XXXX大学毕业设计（论文）
ABSTRACT
Nowadays people usually use the radio for manual FM accept , it is much trouble, and because the rx sensitivity is not high, the frequency band received is very narrow。TEA5767 has high-performance RF AGC circuit, high sensitivity receiving, reference frequency selection flexible and it can be the realization of automatic search platform。So in this designing I will use the STC89C52 single-chip microcomputer and TEA5767 as the core components of digital FM radio system and Use the I2C communication to connect between STC89C52 and TEA5767 chip。Through the software written and using single chip computer control TEA5767 achieve manually live to be automatic FM, received signal through the TAD2030 amplifier
amplification device, then use the speaker output the signal。In the process of FM the frequency of the signal can be checked by LCD1602 。
Key words：Digital FM； STC89C52； TEA5767； TAD2030
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