基于AU6842芯片的家用音响USB数字音频模块的设计

Design of AU6842 Chip-based USB Digital Audio Module for Home Theater System

AU6842芯片是一款数字音频soc芯片,其中集成了USB主机控制器,可以用单芯片实现USB数字音频模块。利用该芯片设计的USB数字音频模块通过标准串行口同音响主控制器通信,处理音响主控制器发出的操作命令,实现从USB存储设备中读取并播放MP3文件。本文将介绍USB数字音频模块的结构和各个子模块的功能;针对USB音频模块功能分析AU6842各个功能模块的技术参数,提供USB音频模块的硬件电路设计;描述该模块控制软件的通信协议和模块的工作状态。

AU6842 chip is a kind of digital audio soc chip. It integrates USB host controller which can realize USB digital audio module with single-chip. The AU6842 chip-based USB digital audio module can process the operating commands from audio host controller through standard serial port and realize reading and playing of MP3 files from USB storage devices. The article introduces the structure of USB digital audio module and the functions of its sub-modules, analyzes the technological parameters of AU6842 functional modules, provides hardware circuit design of USB audio module and describes communication protocol of module controlling software and work state of modules against USB audio module function