说明：  清华毕业论文——USB接口设计方面。 从总线结构-数据流-总线协议等详细的以论文形式表现出来，是写相关论文的极好参考资料。
(Tsinghua University dissertation- USB interface design. From the bus architecture- data streams- such as detailed bus protocol to paper forms, is to write papers on an excellent reference.)