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. 17, 2002
Filed:
Nov. 23, 1999
Michael R. Hede, Colorado Springs, CO (US);
Jeffrey M. Rogers, Colorado Springs, CO (US);
Stephen M. Johnson, Colorado Springs, CO (US);
LSI Logic Corporation, Milpitas, CA (US);
Abstract
A method and apparatus for switching clocks comprising a first circuit, a second circuit, and a third circuit. The first circuit may be configured to generate (i) a first signal in response to a select signal and a first clock signal, (ii) a second signal in response to said first signal and a second clock signal, (iii) a third signal in response to said select signal and said second clock signal, and (iv) a fourth signal in response to said third signal and said first clock signal. The second circuit may be configured to generate a first enable signal and a second enable signal in response to (i) said first signal, (ii) said second signal, (iii) said third signal, and (iv) said fourth signal. The third circuit may be configured to select (i) one or more first input signals, (ii) one or more second input signals, or (iii) a predetermined logic level as one or more output signals in response to said first enable signal and said second enable signal.