图7-21:HcRhStatus寄存器结构说明 寄存器位布局(31:0) 字段功能详述 7.4.3 HcRhStatus Register The HcRhStatus register is divided into two parts. The lower word of a Dword represents the Hub Status fi...
The Host Controller Communications Area (HCCA) is a 256-byte structure of system memory that is used by system software to send and receive specific control and status information...