微型机与应用
微型機與應用
미형궤여응용
MICROCOMPUTER & ITS APPLICATIONS
2011年
14期
28-30,33
,共4页
石鑫焱%曹成茂%刘权%毕如俊%葛俊
石鑫焱%曹成茂%劉權%畢如俊%葛俊
석흠염%조성무%류권%필여준%갈준
车载MP3播放器%AU7842%低功耗%I2C总线
車載MP3播放器%AU7842%低功耗%I2C總線
차재MP3파방기%AU7842%저공모%I2C총선
car MP3 player%AU7842%low power%I2C bus
介绍了AU7842解码芯片在车载MP3播放器中的应用,根据车载供电的特点设计电路,实现了省电模式下低功耗操作;利用I2C总线通信,控制AU7842芯片相应的寄存器实现音频文件的解码,并通过软件编程实现浏览播放、随机播放等多样化的播放模式,满足不同的播放要求。结合音效处理,播放器可实现摇滚、爵士、流行等多种音效播放。
介紹瞭AU7842解碼芯片在車載MP3播放器中的應用,根據車載供電的特點設計電路,實現瞭省電模式下低功耗操作;利用I2C總線通信,控製AU7842芯片相應的寄存器實現音頻文件的解碼,併通過軟件編程實現瀏覽播放、隨機播放等多樣化的播放模式,滿足不同的播放要求。結閤音效處理,播放器可實現搖滾、爵士、流行等多種音效播放。
개소료AU7842해마심편재차재MP3파방기중적응용,근거차재공전적특점설계전로,실현료성전모식하저공모조작;이용I2C총선통신,공제AU7842심편상응적기존기실현음빈문건적해마,병통과연건편정실현류람파방、수궤파방등다양화적파방모식,만족불동적파방요구。결합음효처리,파방기가실현요곤、작사、류행등다충음효파방。
This paper introduces the application of AU7842 decoder chip in car MP3 player in the applications,according to the characteristics of the automotive power supply,a reasonable circuit is designed,so the lower power consumption can be achieved in power-saving mode.The MCU control the corresponding registers of AU7842 chip by the I2C bus to control the audio file decoding.And in order to meet the different requirements,the diversification of playback mode,such as browse play and random play,can be realized by programming.Through the audio processing,the player can achieve kinds of sound effect,such as rock,jazz and pop.
