David Lindley issues

Results 6 issues of


                                            David Lindley

Formalize a process for updating and releasing the tapeout flow.

Create illegal cell name character check in precheck and tapeout flows

'"/' and '#' have been flagged by Skywater. Are there other illegal characters? Should we automatically replaced with another string ('__' maybe)? Or, push back to customer?

Remove "Google" from copyright notice in Caravel, Caravan, and Openframe. Update version and date.

Caravel: issue with analog routes between user wrapper and pads. Openlane routed thin analog routes to the pad that were strongly coupled to digital signals.

Solve poly density issues

Many chips on 2409 and 2411 where flagged for poly density exceeding the max limit. This is caused by the OpenLane configuration prioritizing the sky130_ef_sc_hd__decap_12 for fill. This cell has...

Please change the sky130 default decap cell to be sky130_ef_sc_hd__decap_40_12

The historical default sky130 decap cell has been sky130_ef_sc_hd__decap_12. Last year Skywater reduced the sky130 poly density range requirements and most PNR blocks started failing poly pattern density. As a...