Simplified buffer manipulation using standard repowering function
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United States of America Patent
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Aug 25, 1998
Grant Date -
N/A
app pub date -
Jun 18, 1996
filing date -
Jun 18, 1996
priority date (Note) -
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Abstract
A simple system and method is disclosed that provides for the identification and removal of unnecessary buffers in a logic circuit. A special pseudo-buffer is added to the library and identified as a buffer cell with zero area. In addition, a feedthrough delay rule is associated with the pseudo-buffer such that it is treated by a timing system as a wire with no delay through which all electrical properties pass. An existing repowering function will then consider the pseudo-buffer as a replacement choice when attempting to select an optimal power level. If the pseudo buffer is chosen, it can be easily removed from the circuit at some time thereafter.
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