Method of buffer insertion to achieve pin specific delays
AssigneeLSI Logic Corporation
InventorsAiguo Lu, Ivan Pavisic, Nikola Radovanovic
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AssigneeLSI Logic Corporation
InventorsAiguo Lu, Ivan Pavisic, Nikola Radovanovic
Estimating the term…
A method of buffer insertion for a tree network in an integrated circuit design includes steps of: (a) receiving as input an integrated circuit design including a tree network; (b) selecting a buffer type available to the integrated circuit design from a cell library that results in a minimum total delay for a predetermined wire length; (c) identifying each candidate leaf node in the tree network that has a required pin-specific target delay; (d) inserting a buffer between each internal node that is traversed by a path from a candidate leaf node to a root node of the tree network and each leaf node that is not a candidate leaf node; (e) creating a buffer sub-tree in the tree network from an upstream internal node for each internal node that is traversed by a path from a candidate leaf node to a root node of the tree network; re-parenting each internal node that is traversed by a path from a candidate leaf node to a root node of the tree network to a new buffer in the buffer sub-tree; and (g) generating as output a revised integrated circuit design that includes the buffer sub-tree.
A method comprising steps of:
A computer program product comprising a medium for embodying a computer program for input to a computer and a computer program embodied in the medium for causing the computer to perform steps of:
Dependencies are inferred from the claim text.