HCR CLF BLF bit[3] OCR SOC The HcCommandStatus register is used by the Host Controller to receive commands issued by the Host Controller Driver, as well as reflecting the cur...
图7-19:HcRhDescriptorA寄存器 寄存器位布局(31:0) 字段功能说明 The HcRhDescriptorA register is the first register of two describing the characteristics of the Root Hub. Reset values are implemen...
字段功能说明 The HcRhPortStatus[1:NDP] register is used to control and report port events on a per-port basis. NumberDownstreamPorts represents the number of HcRhPortStatus registers t...
Hub descriptors are derived from the general USB device framework. Hub descriptors define a hub device and the ports on that hub. The host accesses hub descriptors through the hub...
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...