摘要:
A method to optimize performance of an electric circuit design is disclosed. The method comprises providing for each circuit element of the electric circuit design available design parameter options; transforming the electric circuit design and the design parameter options into a linear programming model; determining a solution for the linear programming model; and based on the solution generating a list of circuit elements which design parameters need to be changed to a different option to achieve performance optimization.
摘要:
A method and program for designing an electronic circuit, especially a clock tree and a sub-clock tree, within a set of sinks with given target arrival time windows, preferably on an integrated circuit. The clock tree and the sub-clock tree are preferably connected through one or multiple fixed circuits which must not be altered, cloned or removed. Several alternative implementations of the at least one logic structure are built and for each of the several alternative implementations data is stored. A set of configurations is built, each configuration comprising a combination of the one or several alternative implementations and each configuration satisfying the target arrival time windows at the complete set of sinks. A configuration is selected according to an evaluation of the data, preferably latency data, for constructing the configuration. No manual interaction is needed and a configuration with minimum latencies is provided.
摘要:
The present invention relates to a method for routing data paths in a semiconductor chip with a plurality of layers. The inventive method comprises the steps of wiring a launching clock path and a receiving clock path on one or more layers according to at least one predetermined condition, performing one or more timing tests for determining any critical paths, and determining a weight function for every layer of each critical path. Said weight function is defined as the difference between a property of the launching clock tree and the same property of the receiving clock tree on said layer. If said weight function is positive for any layer, the wiring of the data path is not allowed on said layer. Preferably the remaining layers are chosen in such a way that a local variation of the delay on said layer is minimal.
摘要:
A method and program for designing an electronic circuit, especially a clock tree and a sub-clock tree, within a set of sinks with given target arrival time windows, preferably on an integrated circuit. The clock tree and the sub-clock tree are preferably connected through one or multiple fixed circuits which must not be altered, cloned or removed. Several alternative implementations of the at least one logic structure are built and for each of the several alternative implementations data is stored. A set of configurations is built, each configuration comprising a combination of the one or several alternative implementations and each configuration satisfying the target arrival time windows at the complete set of sinks. A configuration is selected according to an evaluation of the data, preferably latency data, for constructing the configuration. No manual interaction is needed and a configuration with minimum latencies is provided.
摘要:
A design structure for designing an electronic circuit, especially a clock tree and a sub-clock tree, within a set of sinks with given target arrival time windows, preferably on an integrated circuit designed by an IC design house or other circuit design provider. The clock tree and the sub-clock tree are preferably connected through one or multiple fixed circuits which must not be altered, cloned or removed. Several alternative implementations of the at least one logic structure are built and for each of the several alternative implementations data is stored. A set of configurations is built, each configuration comprising a combination of the one or several alternative implementations and each configuration satisfying the target arrival time windows at the complete set of sinks. A configuration is selected according to an evaluation of the data, preferably latency data, for constructing the configuration. No manual interaction is needed and a configuration with minimum latencies is provided.
摘要:
A method to optimize performance of an electric circuit design is disclosed. The method comprises providing for each circuit element of the electric circuit design available design parameter options; transforming the electric circuit design and the design parameter options into a linear programming model; determining a solution for the linear programming model; and based on the solution generating a list of circuit elements which design parameters need to be changed to a different option to achieve performance optimization.
摘要:
The present invention relates to a method for routing data paths in a semiconductor chip with a plurality of layers. The inventive method comprises the steps of wiring a launching clock path and a receiving clock path on one or more layers according to at least one predetermined condition, performing one or more timing tests for determining any critical paths, and determining a weight function for every layer of each critical path. Said weight function is defined as the difference between a property of the launching clock tree and the same property of the receiving clock tree on said layer. If said weight function is positive for any layer, the wiring of the data path is not allowed on said layer. Preferably the remaining layers are chosen in such a way that a local variation of the delay on said layer is minimal.
摘要:
A method for generating a layout for an integrated circuit having a plurality of sinks and at least one source is disclosed. The source supplies a plurality of signals to the respective plurality of sinks. The method includes: identifying the source which supplies at least one of the respective sinks and having a negative slack; finding all sinks having a negative slack driven by the source; clustering the sinks according to timing and placement information read from a database, yielding a plurality of clusters of sinks, in which each cluster includes only a predetermined portion of the plurality of sinks; generating a plurality of clones associated with a respective one of the clusters of sinks; and coupling the clones to respective ones of the clusters of sinks yielding a second layout.
摘要:
A design structure for designing an electronic circuit, especially a clock tree and a sub-clock tree, within a set of sinks with given target arrival time windows, preferably on an integrated circuit designed by an IC design house or other circuit design provider. The clock tree and the sub-clock tree are preferably connected through one or multiple fixed circuits which must not be altered, cloned or removed. Several alternative implementations of the at least one logic structure are built and for each of the several alternative implementations data is stored. A set of configurations is built, each configuration comprising a combination of the one or several alternative implementations and each configuration satisfying the target arrival time windows at the complete set of sinks. A configuration is selected according to an evaluation of the data, preferably latency data, for constructing the configuration. No manual interaction is needed and a configuration with minimum latencies is provided.
摘要:
A method to provide optimization between synthesis and layout in modern integrated circuit design, the method includes the steps of: a) identifying (210) a source (10) which has at least one associated sink (30) having a negative slack, i.e. the source having a negative slack at its output; b) finding all sinks (30) driven by the identified source; and c) clustering (240) the sinks (30) according to timing and placement information read from a database, yielding a plurality of clusters (30a, 30b) of sinks, in which a cluster includes only a predetermined portion of the sinks.