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:
Sep. 22, 2015
Filed:
Feb. 10, 2012
Applicants:
David Lin, Westborough, MA (US);
Suresh Balasubramanian, Shrewsbury, MA (US);
Inventors:
David Lin, Westborough, MA (US);
Suresh Balasubramanian, Shrewsbury, MA (US);
Assignee:
Cavium, Inc., San Jose, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03L 7/06 (2006.01); H03L 7/081 (2006.01); H03K 5/135 (2006.01);
U.S. Cl.
CPC ...
H03L 7/0816 (2013.01); H03K 5/135 (2013.01);
Abstract
A delay circuit provides a quadrature-delayed strobe, a tightly controlled quadrature DLL and write/read leveling delay lines by using the same physical delay line pair. By multiplexing different usage models, the need for multiple delay lines is significantly reduced to only two delay lines per byte. As a result, the delay circuit provides substantial saving in terms of layout area and power.