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EHCI – Enhanced Host Controller Interface

Vangie Beal
Last Updated May 24, 2021 7:42 am

The Enhanced Host Controller Interface (EHCI) specification describes the register-level interface for a Host Controller for the Universal Serial Bus (USB).

EHCI specification

The EHCI specification describes a host controller that correctly supports all compliant USB 2.0 low-, full-, and high-speed devices. It includes a description of the hardware/software interface between system software and the host controller hardware. This specification is intended for hardware component designers, system builders and device driver developers.