文档介绍：Enhanced Host Controller Interface Specification for
Universal Serial Bus
Date: March 12, 2002
Revision:
EHCI Revision 3/12/2002
THIS SPECIFICATION IS PROVIDED "AS IS" WITH NO WARRANTIES WHATSOEVER, INCLUDING ANY
WARRANTY OF MERCHANTABILITY, NON-INFRINGEMENT, FITNESS FOR ANY PARTICULAR
PURPOSE, OR ANY WARRANTY OTHERWISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION OR
SAMPLE. Information in this specification is provided in connection with Intel products. No license, express
or implied, by estoppel or otherwise, to any intellectual property rights is granted herein, except that a license
is hereby granted to copy and reproduce this specification for internal use only.
Contact Intel for information on further licensing agreements and requirements.
Intel disclaims all liability, including liability for infringement of any proprietary rights, relating to use of
information in this specification. Except as provided in Intel’s Terms and Conditions of Sale for such
products, Intel assumes no liability whatsoever, and Intel disclaims any express or implied warranty, relating
to sale and/or use of Intel products including liability or warranties relating to fitness for a particular
purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Intel
products are not intended for use in medical, life saving, or life sustaining applications.
Intel may make changes to documents, specifications and product descriptions at any time, without notice.
Designers must not rely on the absence or characteristics of any features or instructions marked "reserved"
or "undefined." Intel reserves these for future definition and shall have no responsibility whatsoever for
conflicts or patibilities arising from future changes to them.
Contact your local Intel sales office or your distributor to obtain the latest documents and/or specifications,
and before placing