Rectangle-packing-based module placement
ICCAD '95 Proceedings of the 1995 IEEE/ACM international conference on Computer-aided design
An O-tree representation of non-slicing floorplan and its applications
Proceedings of the 36th annual ACM/IEEE Design Automation Conference
B*-Trees: a new representation for non-slicing floorplans
Proceedings of the 37th Annual Design Automation Conference
Block placement with symmetry constraints based on the O-tree non-slicing representation
Proceedings of the 37th Annual Design Automation Conference
Analog Device-Level Layout Automation
Analog Device-Level Layout Automation
Placement constraints in floorplan design
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
Placement with symmetry constraints for analog layout design using TCG-S
Proceedings of the 2005 Asia and South Pacific Design Automation Conference
Improved method of cell placement with symmetry constraints for analog IC layout design
Proceedings of the 2006 international symposium on Physical design
Automation of IC layout with analog constraints
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Symmetry within the sequence-pair representation in the context of placement for analog design
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
On the exploration of the solution space in analog placement with symmetry constraints
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Analog placement based on novel symmetry-island formulation
Proceedings of the 44th annual Design Automation Conference
Analog placement with common centroid constraints
Proceedings of the 2007 IEEE/ACM international conference on Computer-aided design
Symmetry-aware placement with transitive closure graphs for analog layout design
Proceedings of the 2008 Asia and South Pacific Design Automation Conference
Proceedings of the 2008 IEEE/ACM International Conference on Computer-Aided Design
Analog placement with common centroid and 1-D symmetry constraints
Proceedings of the 2009 Asia and South Pacific Design Automation Conference
Thermal-driven analog placement considering device matching
Proceedings of the 46th Annual Design Automation Conference
Analog placement based on symmetry-island formulation
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Performance-driven analog placement considering boundary constraint
Proceedings of the 47th Design Automation Conference
Proceedings of the 2010 Asia and South Pacific Design Automation Conference
Regularity-oriented analog placement with diffusion sharing and well island generation
Proceedings of the 2010 Asia and South Pacific Design Automation Conference
A corner stitching compliant B*-tree representation and its applications to analog placement
Proceedings of the International Conference on Computer-Aided Design
Practical placement and routing techniques for analog circuit designs
Proceedings of the International Conference on Computer-Aided Design
Routability-driven placement algorithm for analog integrated circuits
Proceedings of the 2012 ACM international symposium on International Symposium on Physical Design
Regularity-constrained floorplanning for multi-core processors
Integration, the VLSI Journal
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In order to handle device matching in analog circuits, some pairs of modules are required to be placed symmetrically. This paper addresses this device-level placement problem for analog circuits and our approach can handle symmetry constraint and other placement constraints simultaneously. The problem of placing devices with symmetry constraint has been extensively studied but none of the previous works has considered symmetry constraint with other placement constraints simultaneously. Instead of handling the constraints by having a penalty term in the cost function to penalize violations, a unified method is proposed that, by adjusting the edge weights in a pair of constraint graphs, can try to satisfy all the placement and symmetry constraints simultaneously in a candidate floorplan solution. The maximum distance of the modules in a symmetry group from the corresponding symmetry axis will be minimized in this weight adjusting step, in order to minimize the total packing area. We have compared our method with the most updated results on this problem [2] when there are only symmetry constraints and results show that our approach can give solutions of better quality, in an acceptable amount of run time. We will also demonstrate the effectiveness of our approach in handling different types of constraints simultaneously by testing on data sets with both symmetry and other placement constraints, and the results are very promising.