微型机与应用
微型機與應用
미형궤여응용
MICROCOMPUTER & ITS APPLICATIONS
2011年
19期
19-21
,共3页
车载音响%开关电源%低功耗%I2C总线
車載音響%開關電源%低功耗%I2C總線
차재음향%개관전원%저공모%I2C총선
car audio%switching power supply%low power consumption%I2C bus
介绍了新型数字多媒体存储式智能车载音响系统的解决方案。采用高效率的开关电源实现了省电模式下低功耗操作。单片机通过I2C总线控制收音、MP3解码、音效处理芯片相应的寄存器，分别实现数字调频立体收音、音频解码、音效处理功能。该系统融入了智能自检、异常应错机制，实现了记忆操作及MP3续播功能，且优化了用户操作及视听感受。
介紹瞭新型數字多媒體存儲式智能車載音響繫統的解決方案。採用高效率的開關電源實現瞭省電模式下低功耗操作。單片機通過I2C總線控製收音、MP3解碼、音效處理芯片相應的寄存器，分彆實現數字調頻立體收音、音頻解碼、音效處理功能。該繫統融入瞭智能自檢、異常應錯機製，實現瞭記憶操作及MP3續播功能，且優化瞭用戶操作及視聽感受。
개소료신형수자다매체존저식지능차재음향계통적해결방안。채용고효솔적개관전원실현료성전모식하저공모조작。단편궤통과I2C총선공제수음、MP3해마、음효처리심편상응적기존기，분별실현수자조빈입체수음、음빈해마、음효처리공능。해계통융입료지능자검、이상응착궤제，실현료기억조작급MP3속파공능，차우화료용호조작급시은감수。
This paper mainly introduces a solution of new digital storage smart car audio system. By using high-efficiency switching power supply, the lower power consumption can be achieved in power-saving mode. The MCU controls the corresponding registers of radio, MP3 decoder and audio processing chip by the I2C bus to implement the digital tuned stereo radio, audio decoding, audio processing functions. In order to achieve the operating memory and continuous playback function of MP3, and the optimization of the user operation and audio-visual experience, the system integrated into the intelligent serf-checking and error correction mechanism.
