David L Stauffer

US Patent:

6993671, Jan 31, 2006

Filed:

Mar 28, 2003

Appl. No.:

10/249291

Inventors:

Douglas C. Pricer - Somerset NJ, US
David R. Stauffer - Essex Junction VT, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1/12

US Classification:

713400, 713401

Abstract:

A system and method that controls the start time of different clocks in different clock domains, each of which is controlling an I/O, provides that the first cycle of each time domain is within a predetermined timing delay of one another. Reset signals are pipelined across the clock domains such that all the clocks trigger at substantially the same time. The clock channels may be arranged logically and physically in n groups of m channels with delays associated with each n group according to the relative position of the n group within the sequence of the n groups.