基于单片机MP3设计

毕业论文

基于单片机的MP3的播放器设计

专 业： 通信工程 学生姓名： 郭帅 考 号： 指导教师： 完成日期：

摘 要

Mp3作为常用音乐播放工具已经进入寻常百姓家，而单片机技术在工业控制领域发挥着重要作用。采用以ST C89C58RD+ 单片机为控制核心设计MP3 播放器, 该系统通过单片机控制USB 接口芯片CH375 外接的U 盘, 读取数据并进行缓冲, 传输给专用MP3 音频解码芯片VS1003, 实现特定格式的音频数据解码, 并通过耳机或有源音响输出。经测试, 该M P3 播放器可实现音频播放功能, 该播放器具有播放声音流畅, 操作简单, 功耗低等特点。

Abstract:

Mp3as a music playback tool has entered the homes of ordinary people, and the SCM technology in the field of industrial control plays an important role in. By ST C89C58RD+ single-chip microcomputer to control the core design of MP3 player, the system controlled by the single chip computer USB interface chip CH375 external U disk, read data and buffering, transmission to a dedicated MP3 audio decoding chip VS1003, achieving a specific format audio data decoding, and through a headset or active audio output. After the test, the M P3 player capable of implementing audio playback, the player has a playback sound smooth, simple operation, low power consumption.

关键词：mp3、单片机、硬件、CH375芯片、VS1003芯片

目录

第一章 绪 论................................................................................................................ 1 第二章 单片机技术...................................................................................................... 1 2.1单片机简介 ....................................................................................................... 1 2.2单片机的发展及应用 ....................................................................................... 1 2.3单片机型号的选择 ........................................................................................... 2 第三章 CH375芯片....................................................................................................... 2 3.1 CH375芯片概述 ............................................................................................. 2 3.2 CH375芯片特点 ............................................................................................. 3 3.3 CH375芯片的封装 ......................................................................................... 3 3.5 CH375芯片的功能说明 ................................................................................. 5 第四章 VS1003芯片..................................................................................................... 8 4.1 VS1003芯片概述 ............................................................................................ 8 4.2 VS1003芯片特点 ............................................................................................ 8 4.3 VS1003芯片的封装 ........................................................................................ 9 4.4 VS1003芯片的连接 ........................................................................................ 9 第五章 单片机MP3原理图........................................................................................ 10 5.1 硬件系统设计 ................................................................................................ 10 5.2 单片机读取MP3 数据模块 ......................................................................... 10 5.3 音频解码模块 ................................................................................................ 12 5.4 键盘及显示模块 ............................................................................................ 12 5.5 电源模块 ........................................................................................................ 13 5.6 软件系统设计 ................................................................................................ 13

致谢.............................................................................................................................. 15 参考文献...................................................................................................................... 16