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:
May. 31, 2016
Filed:
Nov. 06, 2014
Xilinx, Inc., San Jose, CA (US);
Terence J. Magee, San Francisco, CA (US);
Xiaoqian Zhang, San Jose, CA (US);
XILINX, INC., San Jose, CA (US);
Abstract
In an example, a control device includes a data path, a clock path, a multiplexing circuit, and a calibration unit. The data path comprises a data delay unit coupled to a data input of a sampling circuit. The clock path comprises a clock delay unit coupled to a clock input of the sampling circuit. The multiplexing circuit selectively couples a reference clock or a data bus to an input of the data delay unit, and selectively couples the reference clock or a source clock to an input of the clock delay unit. The calibration unit is coupled to a data output of the sampling circuit. The calibration unit is operable to adjust delay values of the data delay unit and the clock delay unit based on the data output of the sampling circuit to establish and maintain a relative delay between the data path and the clock path.