For car MP3 traditional design, the system needs to have USB host system and the MP3 file decoding system. The use of single-chip SC95862BP directly integrates USBHost system with MP3 decoder, which is efficient, fast, not only saves the cost of host, reduces the alignment, simplifies the circuit board, but also greatly improves car MP3 host's ability to cope with harsh environment, including the circuit damage caused by seismic and long working.
Car MP3 system includes several modules: control module, power amplifier module, power module and keyboard control module. The whole system is designed on the basis of Single-chip SC95862BP and integrated power amplifier TDA7384A. Control Module is controlled by highly integrated single-chip SC95862BP, including the circuit control; key control;analog \ digital audio processing,;MP3 decode. power amplifier module is designed on the basis of integrated power amplifier TDA7384A, including small amplifier 4558D, which has small distortion, low wear and tear. Button module is controlled by a single-chip SC95862BP, including functions of the volume size adjustment,;the former song,;after song,;start,;suspend,;Mode switch. Car MP3 System has the function of playing MP3 audio files with USB mass storage device.
Keywords: MP3; enumeration; decoding; USB controller;