The Extensible Host Controller Interface (xHCI) specification describes the register-level host controller interface for Universal Serial Bus (USB) Revision 2.0 and above. The specification includes a descr iption of the hardware/software interface
The Enhanced Host Controller Interface (EHCI) specification describes the register-level interface for a Host Controller for the Universal Serial Bus (USB) Revision 2.0. The specification includes a descr iption of the hardware/software interface be
The xHCI Specification is dedicated to the memory of Brad Hosler, a good friend and the impact of whose accomplishments have made the Universal Serial Bus one of the most successful technology innovations of the Personal Computer era.
The goal of xHCI architecture is to define a USB host controller to ultimately replace UHCI/OHCI/EHCI, to provide highly power efficient operation, higher performance, and extensibility to new USB specifications, such as USB3 and beyond.
