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. 19, 2009
Filed:
May. 25, 2006
Greg Rausch, Plymouth, MN (US);
Rob Rabe, Chanhassen, MN (US);
Jake Klier, Blaine, MN (US);
Micron Technology, Inc., Boise, ID (US);
Abstract
A signal generator produces an output clock signal by coupling an input clock signal through a plurality of divider circuits each of which is formed by a toggling flip-flop. The frequency of the output clock signal is adjusted by selecting the flip-flop to which the input clock signal is coupled. Retimer flip-flops may be coupled between adjacent flip-flips to resynchronize the signal being coupled through the flip-flops. Each of the retimer flip-flops receives a respective signal from the output of an upstream flip-flop at its data input, and it receives the input clock signal at its clock input. The flip-flop then applies the signal to a downstream flip-flop in synchronism with the input clock signal. The final two flip-flops through which the input signal is coupled may be preset to various states to set the phase of the output clock signal to one of four phases.