The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 2009
Filed:
Jun. 22, 2005
Kay Hesse, Dresden, DE;
Kay Hesse, Dresden, DE;
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A USB (Universal Serial Bus) OTG (On-The-Go) controller device and more generally a serial bus control circuit chip are provided which have improved port handler implementations. In one example, different port handler units may be provided which selectively support host and device functionality at the respective ports. In another example, a first port handler for providing host functionality and a second port handler for providing device functionality are provided which are of substantially the same hardware structure. In a further example, at least one port handler is provided that has a low level protocol module for handling packet assembly and/or disassembly, a transfer buffer module for buffering incoming or outgoing data to average out system memory latencies, and a memory access module for generating memory requests in compliance with host and/or device functionality.