About USB 컴퓨터 기본 2009. 9. 21. 15:16

Host를 기준

Device -> Host  :: In Transaction

Device <- Host :: Out Transaction

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

2.0 Spec 과 3.0 Spec 을 보자.


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