http://www.usb.org/developers/docs/

USB 3.0 Specification

Universal Serial Bus Revision 3.0 Specification (.zip file format, size 3.80 MB) provides the technical details to understand USB 3.0 requirements and design USB 3.0 compatible products. Modifications to the USB 3.0 specification are made through Engineering Change Notices (ECNs). Enclosed in this zip file are the following documents:

   1. The USB 3.0 Specification released on November 12, 2008
   2. USB 3.0 Adopters Agreement
   3. New Addition of Link Command LDN Engineering Change Notice as of April 4, 2009
   4. USB 3.0 Standard-B and Standard-B Crosstalk Engineering Change Notice as of April 4, 2009
   5. Reset Propagation Engineering Change Notice as of May 8, 2009
   6. Reset Propagation Figure
   7. Q1 09 USB 3.0 Errata as of May 15, 2009

USB 3.0 white papers referenced in this specification can be found here.

USB 2.0 Specification

Universal Serial Bus Revision 2.0 specification (.zip file format, size 10.2 MB) provides the technical details to understand USB requirements and design USB compatible products. Modifications to the USB specification are made through Engineering Change Notices (ECNs). Enclosed in this zip file are the following documents:

   1. The Original USB 2.0 specification released on April 27, 2000
   2. Errata to the USB 2.0 specification as of December 7, 2000
   3. Mini-B connector Engineering Change Notice to the USB 2.0 specification.
   4. Pull-up/pull-down Resistors Engineering Change Notice to the USB 2.0 specification.
   5. Errata to the USB 2.0 specification as of May 28, 2002
   6. Interface Association Descriptor Engineering Change Notice to the USB 2.0 specification.
   7. Rounded Chamfer Engineering Change Notice to the USB 2.0 specification as of October 8, 2003
   8. Unicode Engineering Change Notice to the USB 2.0 specification as of February 21, 2005
   9. Inter-Chip USB Supplement Revision 1.0 as of March 13, 2006
  10. Micro-USB Cables and Connectors Specification Revision 1.01 as of April 4, 2007
  11. USB 2.0 Link Power Management Addendum Engineering Change Notice to the USB 2.0 specification as of July 16, 2007.
  12. High-Speed Inter-Chip USB Electrical Specification Revision 1.0 as of September 23, 2007
  13. Suspend Current Limit Changes Engineering Change Notice to the USB 2.0 Specification as of April 9, 2008
  14. 5V Short Circuit Withstand Requirement Change Engineering Change Notice to the USB 2.0 Specification as of December 22, 2008
  15. Device Capacitance Engineering Change Notice to the USB 2.0 Specification as of December 22, 2008
  16. Material Change Engineering Change Notice to the USB 2.0 Specification as of December 22, 2008
  17. USB 2.0 Phase-locked SOFs Engineering Change Notice to the USB 2.0 Specification as of December 22, 2008
  18. MicroUSB Micro-B ID Pin Resistance and Tolerance stack-up between D+ and D- Engineering Change Notice to the MicroUSB Specification to the USB 2.0 Specification, Revision 1.01 as of December 22, 2008
  19. USB 2.0 Connect Timing as of April 24, 2009
  20. On-The-Go and Embedded Host Supplement to the USB 2.0 Specification as of May 8, 2009
  21. "On-The-Go Supplement to the USB 2.0 Specification" Adopters Agreement


Wireless USB Specification

The Wireless USB Specification Revision 1.0 is available here.


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