图7-20:HcRhDescriptorB 寄存器 寄存器位布局(31:0) 字段功能说明 The HcRhDescriptorB register is the second register of two describing the characteristics of the Root Hub. These fields are writte...
There are four data transfer types defined in USB. Each type is optimized to match the service requirements between the client software and the USB device. The four types are:· In...