文档介绍：基于TEA5767模块的数字FM收音机设计
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摘要
本设计是一个数字调频收音机(FM),就是接受频率调制的无线电信号,经过解调还原成原信号的电子设备,利用单片机控制有FM功能的专用芯片,设计一个收音机系统。本设计采用模块化设计,整个系统由控制模块,FM音频模块,电源模块和功放模块组成。未处理系统采用单片机控制。单片机自从20世纪70年代问世以来,以极其高的性能价格比受到人们的重视和关注,所以应用很广,发展很快。STC89C52单片机的特点是体积小、集成度高、重量轻、抗干扰能力强,对环境要求不高,价格低廉,可靠性高,灵活性好,开发较为容易。
本设计另一核心采用的是TEA5767芯片,它是由PHILIPS公司推出的针对低电压应用的单芯片数字调谐FM立体声收音机芯片。TEA5767芯片内集成了完整的IF频率选择和鉴频系统,就可实现FM收音机的全部功能。设计的液晶屏采用的是Nokia5110,该液晶屏的性价比高,接口简单,速度快,适合便携式供电设备。本设计主要是体现单片机系统的自动控制能力,更重要的意义是单片机的应用改变了控制系统传统的设计思想和方法。
关键词:STC89C52 Nokia5110 TEA5767
Abstract
The design is a digital FM radio (FM), It is to receive the frequency modulated radio signals, electronic equipment restored to the original signal after demodulation, the use of dedicated chip MCU control FM functions, design a radio system. The system consists of the control module, FM audio module, power module and power amplifier module. The The
micro-processing system microcontroller. The singlechip e out since the 1970s, compared to is valued people's and the attention by the extremely high performance price, therefore the application is very broad, the development is very quick. STC89C52 Monolithic integrated circuit's characteristic is the volume is small, the integration rate is high, the weight is light, antijamming ability, is not high to the environment request, the low in price, the reliability is high, the flexibility is good, the development is easier. What this design uses is the TEA5767 chip, it is promotes by PHILIPS Corporation in view of the low voltage application single chip digit harmonious FM stereophonic receiver chip. In the TEA5767 chip integrated plete IF frequency selection and the frequency discrimination system, only need the very few low cost periphery part, be possible to realize the FM radio'plete function. The design of the LCD screen is Nokia5110, The LCD screen have high cost , simple interface, fast, and suitable for portable power supply equipment. A more vital significance was monolithic integrate