International Business Machines Corporation

Sven Nitzsche

Harald Folberth

Sven Peyer

A method can include receiving design data of the integrated circuit, the design data indicates a set of sub-units partitioning an area of an integrated circuit, and a clock tree coupling the sub-units, the clock tree including a selected memory element, a predecessor memory element, and successor elements; determining a valid placement region for relocating the selected memory element; generating grid comprising first set of perpendicularly intersecting lines through the selected memory element, predecessor memory element, and successor elements; extending the grid to include second set of perpendicularly intersecting lines through vertices of the valid placement region and through intersections between edges of the valid placement region and the first set of perpendicularly intersecting lines; determining, within the valid placement region, a point in the extended grid having a minimum total rectilinear distance to the predecessor memory element and the successor elements; relocating the memory element to the determined point.

Constructing staging trees in hierarchical circuit designs

A method includes identifying a design area for a microelectronic device, where the design area includes a plurality of sub-units, each sub-unit from the plurality of sub-units capable of receiving a control signal. The method places a central latch in a center of the design area, where the central latch presents a connection point on a first level of the design area. Responsive to determining a sub-unit of the plurality of sub-units does not include a latch, the method creates a horizontal and vertical axis through the central latch, where the horizontal and vertical axis are bound by a perimeter of the design area. The method places a first set of latches for tiles created by the horizontal axis and the vertical axis on a second level of the design area, where each latch of the first set of latches is placed in a center of a single tile.

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Karlsruhe, Germany

Sven Nitzsche