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Updated 2019 02 05 (markdown)

Matthias Köfferlein 2019-02-06 01:21:13 +01:00
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2019-02-05.md

@ -4,7 +4,7 @@ I'm starting the make the hierarchical processing features available to the Regi
Hierarchical merge utilizes the net formation feature and connects polygons if they touch. Each such connected cluster forms one merged polygon. The merged polygon will appear at the lowest possible level in the hierarchy at which all constituents are known.
I added a small sample P&R block (thanks to Jean-Paul Chaput for allowing me to use it) into the project. This block has about 8k standard cells. The design rules are symbolic 1µm rules, but the hierarchy is realistic.
I added a small sample P&R block into the project. Thanks to Jean-Paul Chaput for allowing me to use it. This block has about 8k standard cells. The design rules are symbolic 1µm rules, but the hierarchy is realistic.
Place-and-route blocks have a hierarchical structure of standard cells, sometimes also via cells or tie-down diodes. The routine usually is within the top cell of the block and a flat arrangement of metal wires (paths, polygons) and vias rectangles (unless these are cells on their own).