Document Library

1.  USB Power Delivery Specification Revision 2.0 Version 1.3 and corresponding Adopters Agreements

2.  USB Power Delivery Specification Revision 3.2 Version 1.1 and corresponding Adopters Agreement

• USB Device Class Definition for Audio Devices Release 4.0 and ECNs through April 22, 2025
• USB Audio v4.0 Adopters Agreement

1. The Original USB 2.0 specification released on April 27, 2000
2. USB 2.0 Adopters Agreement
3. Errata to the USB 2.0 specification as of December 7, 2000
4. Mini-B connector Engineering Change Notice to the USB 2.0 specification
5. Pull-up/pull-down Resistors Engineering Change Notice to the USB 2.0 specification
6. Errata to the USB 2.0 specification as of May 28, 2002
7. Interface Association Descriptor Engineering Change Notice to the USB 2.0 specification
8. Rounded Chamfer Engineering Change Notice to the USB 2.0 specification as of October 8, 2003
9. Unicode Engineering Change Notice to the USB 2.0 specification as of February 21, 2005
10. Inter-Chip USB Supplement Revision 1.0 as of March 13, 2006
11. Micro-USB Cables and Connectors Specification Revision 1.01 as of April 4, 2007 and corresponding Adopters Agreement
12. USB 2.0 Link Power Management Addendum Engineering Change Notice to the USB 2.0 specification as of July 16, 2007
13. High-Speed Inter-Chip USB Electrical Specification Revision 1.0 as of September 23, 2007
14. Suspend Current Limit Changes Engineering Change Notice to the USB 2.0 Specification as of April 9, 2008
15. 5V Short Circuit Withstand Requirement Change Engineering Change Notice to the USB 2.0 Specification as of December 22, 2008
16. Device Capacitance Engineering Change Notice to the USB 2.0 Specification as of December 22, 2008
17. Material Change Engineering Change Notice to the USB 2.0 Specification as of December 22, 2008
18. USB 2.0 Phase-locked SOFs Engineering Change Notice to the USB 2.0 Specification as of December 22, 2008
19. Micro-USB 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
20. Quad Type Cable Additional for Micro USB ECN as of December 29, 2009
21. Clarification on the Chamfer on USB 2.0 Micro Connectors ECN as of March 23, 2010
22. Maximum Unmating Force Value Definition to USB 2.0 Micro Connectors ECN as of March 23, 2010
23. "On-The-Go Supplement to the USB 2.0 Specification" Adopters Agreement
24. USB TEST_MODE Selector Values ECN as of July 26, 2010
25. Errata for USB 2.0 ECN:  Link Power Management (LPM) - 7/2007 as of October 11, 2011
26. On-The-Go and Embedded Host Supplement to the USB Revision 2.0 Specification, Revision 2.0 version 1.1a as of July 27, 2012
27. HSIC ECN as of May 21, 2012
28. USB 2.0 Connect Timing ECN Update as of April 4, 2013
29. HSIC Disconnect Supplement ECN as of September 18, 2013
30. USB 2.0 VBUS Max Limit ECN as of August 11, 2014
31. USB OTG EH ECN Maximum Vbus Voltage dated November 26, 2014
32. USB 2.0 DC Resistance as of October 8, 2021
33. USB 2.0 Double Isochronous IN Bandwidth ECN as of June 4, 2024
34. USB 2.0 eUSB2 Repeater ECN as of September 27, 2024
35. USB 2.0 Double Isochrnous IN ECN dated April 8, 2025

• CDC Subclass for Asynchronous Transfer Mode Devices
• CDC Subclass for Communications Devices
• CDC Subclass for Ethernet Control Model Devices
• CDC Subclass for ISDN Devices
• CDC Subclass for PSTN Devices
• CDC Subclass for Wireless Mobile Communication Devices 1.1
• WMC110-Errata1.pdf and CDC v1.2 WMC v1.1 Errata 1
• USB Class Definitions for Communications Devices
  Revision 1.2 with Errata and ECN through April 3, 2025
• Adopters Agreement

USB4 Electrical Compliance Test Specification Ver. 1.04

USB4 Electrical - Captive Device Compliance Test Specification Ver 1.02

1. Embedded USB2 (eUSB2) Physical Layer Supplement to the USB Revision 2.0 Specification, Rev. 1.2 and corresponding ECN

2. eUSB2 V1.2 ECN Repeater HS SYNC as of September 27, 2024

3. eUSB2 V1.2 ECN Native Mode Auto-Resum as of September 27, 2024