4.2. USB的框架

对于USB的框架,暂时先贴出一些相关图片,细节的解释,有空再写。

图 4.1. USB Implementation Areas

USB Implementation Areas

图 4.2. USB Physical Bus Topology

USB Physical Bus Topology

图 4.3. USB Logical Bus Topology

USB Logical Bus Topology

图 4.4. USB Communication Flow

USB Communication Flow

图 4.5. USB Layers in Linux

USB Layers in Linux