The Development and Realization of Embedded MP3 Player Technology

There are two kind of MP3 decode，one is software and another is hardware.The first one use computer software to decode MP3 file. It cost lots of CPU time. This paper introduces a kind of MP3 player based on hardware decode and D/A converting technology, then makes an detail description of the structure and principal of HI99-MP3 Player, at last proposes a kind of facility hardware controlled circuit and software design method.