目 录
1 前言..............................................................................................................................................................1
1.1 设计指标...................................................................................................................................................1
1.1.1 设计要求................................................................................................................................................1
2 文献综述......................................................................................................................................................1
2.1 软件介绍...................................................................................................................................................1
2.1.1 PROTUES仿真功能介绍.....................................................................................................................1
2.1.2 KEIL ΜVISION IDE仿真功能介绍...................................................................................................2
3 方案比较以及硬件介绍..............................................................................................................................2
3.2 .1 STC12C5A602S...................................................................................................................................5
3.2.2 VS1003-MP3/WMA 音频解码器.........................................................................................................5
3.2.3 LPH7366LCD模块...............................................................................................................................6
3.2.4 SD存储卡...........................................................................................................................................7
3.2.5 74LS245单元.....................................................................................................................................8
3.2.6 AMS1117单元....................................................................................................................................8
4 系统硬件设计..............................................................................................................................................8
4.1 系统总体硬件设计...................................................................................................................................8
4.2 各模块硬件设计.......................................................................................................................................9
4.2.1 显示模块硬件设计................................................................................................................................9
4.2.2 音频解码模块设计................................................................................................................................9
4.2.3 SD卡模块设计.....................................................................................................................................10
4.3 系统原理图.............................................................................................................................................11
