| # Non-rectilinear core area | |
| Tool: Initialize Floorplan | |
| Subcategory: Floorplan customization | |
| ## Conversation | |
| ### Blebowski | |
| Hello, | |
| is it possible to somehow specify core-area that is non-rectilinear (e.g. as a group of polygons surrounding concave shape) ? | |
| I understand that if doing "digital on top" FP where all the analog is a digital macro, this does not make sense. However, it may be usefull in case where "analog-on-top" is done, and digital may have some weird shape and is eventually placed as hard GDSII macro into analog-on-top design. | |
| ### maliberty | |
| The simplest would be to make a rectangular block and add placement and routing blockages for the disallowed area | |
| ### Blebowski | |
| Thanks. Can I then do the `add_pdn_ring` around just the cut area (e.g. L-shape pdn-ring) ? Or is there some other trick how | |
| to achieve this ? | |