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US 2004/0164779 A1Published application
Circuit for programmable stepless clock shifting
AssigneeAlcatel
InventorsSilvio Cucchi, Paolo Novellini
Life of this patent
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Abstract
The present invention provides for a circuit for programmable stepless clock shifting, consisting of a splitter generating a 0° and a 90° shifted clocks from a reference clock, and an interpolator of the two shifted clocks, which provides at the output the desired pre-set clock phase.
Claims8
Circuit for programmable stepless clock shifting comprising:
- a splitter, receiving a clock reference and generating two 90′-shifted clock phases;
- an interpolator receiving said two 90′-shifted clock phases and two coefficients, and supplying a programmable phase clock, which has a phase shift with respect to said clock reference that depends only on said two coefficients.
Dependencies are inferred from the claim text.