基于单片机和TEA5767HN的FM收音机系统的设计_蓝土庆.pdf

2011 6 1 Jun.2011 34 11 Modern Electronics Technique Vol.34 No.11 基于单片机和TEA5767HN 的FM 收音机系统的设计 1, 2 3 蓝土庆 , 黄春贵 (1. , 　400044;2. , 　524048; 3., 　525400) 　:为了在电子产品中嵌入立体声 FM 数字收音机功能。 采用单片机 AT 89S52 和 TEA5 6 HN 为 件核心, 运用 2 I C 总线通信方式进行软件设计, 给出了实现手动搜台、自动搜台等功能的FM 数字调频收音机的设计方法。 该方法采用 PT225 对音频进行处理, 以实现立体声输出, 因而具有轻巧、方便、频带范围宽、低功耗、高灵敏度等特点, 并可以嵌入 MP3、 手机、便携式播放器等小型电子产品中。 :单片机;AT 89S52;T EA5 6 H N;PT225 :TN8-34 　　　　　:A　　　　　:1004-3 3X(2011)11-0181-04 Design of FM Radio System Based on Single Chip Mic ocont olle and TEA5767HN 1, 2 3 LAN Tu-qing , H UANG Chun-gui (1.College of Computer Science, Chongqing University, Chongqing 400044, China; 2.Department of experiment t eaching management, Z hanjiang Normal U niversity, Zhanjiang 524048, China; 3.Maoming N o.1 V ocational School of T echnology, M aoming 525400, China) Abstract:In order to meet the requirements of consumers for electronic products, the function of digital FM stereo radio embedded in electronic products is achieved.MCU AT 89S52 and TEA5 6 H N are taken as the hardware core.The softw are design is conducted with I2C bus communication mode.The manual tuning and automatic tuning functions of digital FM radio were implemented.The audio processing is performed by PT225 to achieve the stereo output.The system has the characte- ristics of light weight, easy operation, wide band, low-power and high sensitivity, and can be embedded in MP3, mobile phones, portable players and other small electronic products. Keyw ords:single chip m