How does OpenLane read the Value of pitch, it seem...
# openlane
w
How does OpenLane read the Value of pitch, it seems incorrect. Pitch should have been the center to center distance of 2 adjacent metal lines. However Openlane is skipping 1 metal line in PDN for pitch. It is taking the value as center to center distance between power/ground metal lines. @User Any idea? I have attached the snippets
v
This values comes from PDN.cfg. Do create custom cfg file and over-write by defining PDN_CFG env variable from config.tcl
m
if you have 1 power domain, you'll have power and ground alternated. So the pitch is between the gnd and gnd or vcc and vcc
w
But shouldn't pitch be between adjacent straps, rather then
gnd -> gnd
and
vcc -> vcc
?
m
šŸ¤·
w
I remember it was between adjacent straps in the beginning, I don't know when it was changed to this and why
@User