Jon Ho
05/05/2023, 6:18 PMLuis Henrique Rodovalho
05/05/2023, 6:34 PMJon Ho
05/05/2023, 7:10 PMLuis Henrique Rodovalho
05/05/2023, 7:13 PMTim Edwards
05/05/2023, 7:13 PMisosub
layer in magic. That will define a ground region that does not connect electrically to the rest of the substrate.vssa1
and vssa2
into your circuit, but LVS complains that they are all shorted together (and presumably also shorted to vssd
, which I think is the default substrate). The two choices are to put isosub
under all areas with devices connected to the same net, or to put a deep nwell structure under all devices connected to the same net. If you really want them isolated, then the deep nwell structure is preferred.Jon Ho
05/05/2023, 10:42 PMTim Edwards
05/06/2023, 12:07 AMMitch Bailey
05/06/2023, 9:48 AMsubcut
box around the entire user_project_wrapper
block at the caravel_core
level work?
I wonder how user_project_wrapper
blocks with multiple substrate connections and multiple internal subcut
layers would work in that case.Tim Edwards
05/06/2023, 1:51 PM