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:
Aug. 31, 2010
Filed:
Jan. 21, 2009
Richard S. Ballantyne, Stittsville, CA;
Catalin Baetoniu, Toronto, CA;
Mark Paluszkiewicz, Schaumburg, IL (US);
Henry E. Styles, Menlo Park, CA (US);
Ralph D. Wittig, Menlo Park, CA (US);
Richard S. Ballantyne, Stittsville, CA;
Catalin Baetoniu, Toronto, CA;
Mark Paluszkiewicz, Schaumburg, IL (US);
Henry E. Styles, Menlo Park, CA (US);
Ralph D. Wittig, Menlo Park, CA (US);
Xilinx, Inc., San Jose, CA (US);
Abstract
Circuits and methods for a differential signal interface for coupling differential signals at a first frequency on a pair of opposite polarity signals to a multiple gigabit transceiver with generic buffers for receiving, transmitting or transceiving out of band signals at a second frequency lower than the first frequency are disclosed. Termination networks are provided coupling generic input buffers to respective ones of the pair of opposite polarity signals for receiving out of band signals where the opposite polarity signals are placed at voltages so that the differential voltage between them is below a threshold voltage. Methods for providing generic buffers with multiple gigabit transceivers for receiving and transmitting out of band signals on a differential signal interface are provided. Out of band signals are received when the out of band signaling protocol is not known.