Clock generation and distribution in an emulation system
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United States of America Patent
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Aug 23, 2005
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N/A
app pub date -
Sep 24, 1999
filing date -
Sep 24, 1999
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Abstract
A method and apparatus for clock generation and distribution in an emulation system is described. The present invention provides a method and apparatus for generating a derived clock signal with a circuit having a look up table. A counter circuit counts clock cycles and provides an index into the look up table. A frequency divider circuit may be used between the counter circuit and a base clock signal to provide an intermediate clock signal with a frequency that is less than the frequency of the base clock signal. In one embodiment, a selection circuit is provided to select between the base clock signal and an external clock signal.
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