Hi, does anyone know why the XOR failed at the pow...
# shuttle-precheck
n
Hi, does anyone know why the XOR failed at the power ring? It seems the power rings are not aligned with the caravel setup? Do I need to change any thing in the user_project_wrappper/config.json for the power rings? Thanks
m
Make sure that your
FP_PDN_CORE_RING
settings match the correct version of
user_project_wrapper
config file.
n
@Mitch Bailey I think I am using the most recent version now. Can you point me to the correct version? Thanks
I see the origins between the user_project_wrapper vs the user_project_wrapper_empty are different (1.55um). How do we adjust it to align with the one from the caravel gds?
m
Are you resubmitting a design from a previous shuttel? Is it the same problem as https://open-source-silicon.slack.com/archives/C0161A4A59V/p1652981163259559?
n
Yes, but everything re-run with the recent caravel and openlane. I change the power ring V/H-offsets (
set ::env(FP_PDN_CORE_RING_HOFFSET) 12.45
work with config.tcl only, not the .json?) and the power rings are aligned, but not the pins. Not sure why OL changed? @Matt Liberty any suggestion here? can you point me to the correct setting for the pin placements? Thanks