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Further automation of analog and mixed-signal integrated circuit design requires the consideration of a growing number of design constraints. The processing of these constraints needs specific design information and depends on their target parameters and the type of mathematical requirement. Both aspects allow the creation of numerous different constraint types with many demands on the available design...
The consideration of a growing number of design constraints is becoming a bottleneck in the design of analog and mixed-signal integrated circuits and is blocking more, much-needed automation in this area. In this paper, we propose a solution to these issues with a new methodology for constraint propagation and transformation. This technique allows designers and software tools to consider all relevant...
In industrial environments, full-custom layout design of analog and mixed-signal ICs is done hierarchically. In order to increase design efficiency, cell layouts are reused in the design hierarchy. Constraints forming relations between instances in different hierarchical contexts are of critical importance. While implementing a cell layout, these constraints have to be available in the cell's context...
The design of integrated circuits involves the consideration of a large number of constraints of various types. In addition to the definition of these constraints in a constraint-driven design flow, the declaration of new, yet unknown constraint types might be necessary.
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