NOVEL PATTERN-BASED FORMAL DESCRIPTION LANGUAGE FOR DESCRIBING A POWER/GROUND ROUTING STRUCTURE IN AN INTEGRATED CIRCUIT DESIGN

An approach includes a new power and ground structure description language (PSDL) will allow the user to describe the desired routing pattern for each layer and on a user defined region by region basis, including how the pattern will be laid out in the design with respect to other patterns from a different layer. The new PSDL also gives the complete picture of the entire power and ground structure, instead of just a layer-by-layer view from a single command. It also allowed flexibility in alignment especially when dealing with track misalignments, thus avoiding the extensive trial-and-error steps needed to calculate offsets and distances to maintain pattern alignment using previous approaches. Additionally, because PSDL is not tightly dependent on the design size and/or floorplan, transferring the desired power and ground structure from one design to another will be very easy with only few adjustments.