Providing fault-tolerant spread spectrum clock signals in a system
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United States of America Patent
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Aug 5, 2014
Grant Date -
May 10, 2012
app pub date -
Jul 31, 2009
filing date -
Jul 31, 2009
priority date (Note) -
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Abstract
To provide fault-tolerant, spread spectrum clock signals, a plurality of processing modules having respective spread spectrum control circuits are provided. Clock signals of redundant clock sources are provided to the plurality of processing modules. Failover control logic selects a corresponding one of the clock signals from the redundant clock sources for use in each of the processing modules. Frequency spreading is applied to the corresponding selected clock signal in each of at least some of the plurality of processing module.
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