专利内容由知识产权出版社提供
专利名称：USB transaction translator with SOF timer
and USB transaction translation method forperiodically sending SOF packet
发明人：Jiin Lai,Chin-Sung Hsu,Terrance Shiyang
Shih,Jinkuan Tang,Buheng Xu,Hui Jiang
申请号：US14038717申请日：20130926公开号：US09009380B2公开日：20150414
专利附图：
摘要：A universal serial bus (USB) transaction translator is provided along with a
micro-frame synchronization method. A device interface is coupled to a device via a devicebus, and a host interface is coupled to a host via a host bus. At least two buffers areconfigured to store data. A controller stores the data in the buffers alternately. A start-of-frame (SOF) counter is used to count the SOF packets, with the counting value of theSOF counter being compared to a predefined value. Specifically, the controller resets aSOF timer for sending the SOF packet when the counting value achieves or exceeds thepredefined value, such that the SOF packet and an isochronous timestamp packet (ITP)from the host are sent at the same time. Further, the controller delays the sending of theSOF packet for a period of time according to the ITP from the host.
申请人：VIA Technologies, Inc.
地址：New Taipei TW
国籍：TW
代理机构：Stout, Uxa & Buyan, LLP
代理人：Donald E. Stout
更多信息请下载全文后查看
