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Add more spacing to inflated pins to prevent unroutables

This commit is contained in:
Eren Dogan 2023-07-23 10:22:43 -07:00
parent 1c274afa46
commit 7a7ddebcca
1 changed files with 8 additions and 1 deletions
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9
compiler/router/graph_router.py
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@ -8,6 +8,7 @@ from openram.base.vector import vector
from openram.base.vector3d import vector3d
from openram.gdsMill import gdsMill
from openram.tech import GDS
from openram.tech import drc
from openram.tech import layer as tech_layer
from openram import OPTS
from .router_tech import router_tech
@ -90,7 +91,13 @@ class graph_router(router_tech):
# Add vdd and gnd pins as blockages as well
# NOTE: This is done to make vdd and gnd pins DRC-safe
for pin in self.all_pins:
self.blockages.append(pin.inflated_pin(spacing=self.track_space,
xdiff = self.layer_widths[0] - pin.width()
ydiff = self.layer_widths[0] - pin.height()
diff = max(xdiff, ydiff)
spacing = self.track_space + drc["grid"]
if diff > 0:
spacing += diff
self.blockages.append(pin.inflated_pin(spacing=spacing,
extra_spacing=self.offset,
keep_link=True))