Clock distribution circuits and methods of operating same that use multiple clock circuits connected by phase detector circuits to generate and synchronize local clock signals
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United States of America Patent
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Aug 4, 2009
Grant Date -
Apr 25, 2002
app pub date -
Jul 31, 2001
filing date -
Jul 31, 2000
priority date (Note) -
In Force
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Abstract
Multiple clock circuits are connected by phase detector circuits to generate and synchronize local clock signals. For example, a clock distribution circuit includes a first clock circuit that is configured to generate a first clock signal in response to a first error signal, and a second clock circuit that is configured to generate a second clock signal in response to the first error signal. A first phase detector circuit connects the first clock circuit to the second clock circuit and is configured to generate the first error signal in response to the first and the second clock signals.
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