http://www.maximumpc.com/tags/xHCI used for category lists, takes arguments en http://www.maximumpc.com/article/news/intel_makes_draft_spec_xhci_usb_30_available <!--paging_filter--><p>Toms Hardware <a href="http://www.tomshardware.com/news/Intel-IDF2008-USB-3-0-firewire,6126.html" target="_blank">reports</a> that Intel’s &quot;Extensible Host Controller Interface (xHCI) draft specification revision 0.9 in support of the USB 3.0 architecture, also known as SuperSpeed USB&quot; is now available. This is a good indicator that we might see the first USB 3.0 demonstrations at next week’s IDF in San Francisco.</p> <p>xHCI draft specification provides hardware component designers, system builders and device driver developers with a description of the hardware/software interface between system software. It is being made available under RAND-Z (i.e. royalty free) licensing terms to all USB 3.0 Promoter Group and contributor companies that sign an xHCI contributor agreement.</p> <p>It doesn’t appear that the new spec will be backward compatible past USB 2.0. I find it hard to believe that USB 1.1 devices will be out of luck, so I plan to keep an eye on that aspect. USB 3.0 at 600 MB/s will offer a ten-fold increase in the bandwidth of USB 2.0 at 4.8 Gb/s. That is pretty impressive if it approaches it’s spec yield. USB 2.0 spec rate is 480 Mbit/s but typical USB PC-hosts rarely exceed sustained transfers of 280 Mbit/s.</p> <p>Will you be wanting USB 3.0 on your future system?</p> <div style="text-align: center"><img src="/files/u3606/usb_symbol.jpg" alt="USB Symbol" width="400" height="194" /></div> http://www.maximumpc.com/article/news/intel_makes_draft_spec_xhci_usb_30_available#comments News build a pc IDF intel SuperSpeed usb USB 3.0 xHCI Thu, 14 Aug 2008 09:04:36 -0500 Chris Moody 3180 at http://www.maximumpc.com