USB 2.0 IPCORE 包含源代码，说明文档，仿真文件 This core provides a function (peripheral device) interface. It can be used to interface almost any peripheral to a computer via USB. This core fully complies to the USB 2.0 specification and can operate at USB Full and High Speed rates (12 and 480 Mb/s)
资料中的文档讲的很专业很详细，准备仔细研究研究！谢谢