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Pick correct side of pin in channel route.

This commit is contained in:
mrg 2020-06-28 14:28:18 -07:00
parent e774314add
commit bc3de9db05
1 changed files with 18 additions and 2 deletions
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20
compiler/base/channel_route.py
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@ -240,10 +240,18 @@ class channel_route(design.design):
# Route each pin to the trunk # Route each pin to the trunk
for pin in pins: for pin in pins:
mid = vector(pin.center().x, trunk_offset.y) mid = vector(pin.center().x, trunk_offset.y)
self.add_path(self.vertical_layer, [pin.center(), mid]) # Find the correct side of the pin
if pin.cy() < trunk_offset.y:
pin_pos = pin.uc()
else:
pin_pos = pin.bc()
self.add_path(self.vertical_layer, [pin_pos, mid])
self.add_via_center(layers=self.layer_stack, self.add_via_center(layers=self.layer_stack,
offset=mid, offset=mid,
directions=self.directions) directions=self.directions)
self.add_via_stack_center(from_layer=pin.layer,
to_layer=self.vertical_layer,
offset=pin_pos)
def add_vertical_trunk_route(self, def add_vertical_trunk_route(self,
pins, pins,
@ -280,10 +288,18 @@ class channel_route(design.design):
# Route each pin to the trunk # Route each pin to the trunk
for pin in pins: for pin in pins:
mid = vector(trunk_offset.x, pin.center().y) mid = vector(trunk_offset.x, pin.center().y)
self.add_path(self.horizontal_layer, [pin.center(), mid]) # Find the correct side of the pin
if pin.cx() < trunk_offset.x:
pin_pos = pin.rc()
else:
pin_pos = pin.lc()
self.add_path(self.horizontal_layer, [pin_pos, mid])
self.add_via_center(layers=self.layer_stack, self.add_via_center(layers=self.layer_stack,
offset=mid, offset=mid,
directions=self.directions) directions=self.directions)
self.add_via_stack_center(from_layer=pin.layer,
to_layer=self.horizontal_layer,
offset=pin_pos)
def vcg_pin_overlap(self, pin1, pin2, pitch): def vcg_pin_overlap(self, pin1, pin2, pitch):
""" Check for vertical or horizontal overlap of the two pins """ """ Check for vertical or horizontal overlap of the two pins """