基于AU7850的触摸式多媒体播放器设计

Design of a Touch Multimedia Player Based on AU7850

随着电子科学技术的发展,多媒体播放设备在生活中无处不在。本文阐述了一种触摸式多媒体播放器的整体系统设计方案。此播放器选用AU7850芯片,能解码MP3及WMA格式文件,同时支持U盘、SD卡和TF卡的读卡功能,从而可以从外接存储设备中进行音频文件的播放。播放器外部面板配备LCD显示屏实现多种功能的显示,并采用触摸式按键来执行多种播放功能。系统采用5V锂电池供电,可通过迷你USB接口对电池进行充电,并带有锂电池保护电路,防止过度充放电造成电池的损坏。此播放器对多种外接存储设备的支持使得其实用性大幅提高,LCD显示屏和触摸式按键也使得系统设计更加便捷化与人性化。

Along with the development of electronic science and technology, multimedia player has been widely used in people＇s life. This paper describes the design of a touch multimedia player system. This player uses AU7850 chip, can decode the MP3 and WMA audio formats, and it can support USB. SD card and TF card, so it can play the audio format files from external storage devices. The external panel of the player is provided with LCD display used to perform various functions on display, and uses touch key to implement a variety of play functions. This system is powered by 5V lithium battery, it can be charged through mini USB interface, and it has lithium battery protection circuit for preventing battery from the damage caused by excessive charge or discharge. This multimedia player supports various external storage devices so that the practicality can be improved. Meantime, the LCD display screen and touch keys make the system design more convenient and humanization.