USB的固件代码。是实现枚举功能的。代码简洁明了，删除了不必要的寄存器设置。

usb function audio. programa em C/C++ para teste de funç ã o de audio.

If you’re involved with designing or programming devices that incorporate a USB mass-storage device or host interface, this book will help you get your projects up and running. You’ll also find the book useful if you’re designing or programming