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OpenRAM
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Add layer to horizontal pin help and use in precharge

This commit is contained in:
mrg 2022-02-25 10:45:25 -08:00
parent 12a6f1f2ee
commit 7b77378927
2 changed files with 29 additions and 15 deletions
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20
compiler/base/hierarchy_layout.py
View File

@ -422,10 +422,12 @@ class layout():
for pin_name in self.pin_map.keys():
self.copy_layout_pin(instance, pin_name, prefix + pin_name)
def route_horizontal_pin(self, name):
def route_horizontal_pin(self, name, layer=None):
"""
Route together all of the pins of a given name that horizontally align.
"""
bins = {}
for i in range(len(self.local_insts)):
@ -442,14 +444,24 @@ class layout():
last_via = None
for pin in v:
if layer:
pin_layer = layer
else:
pin_layer = self.supply_stack[0]
last_via = self.add_via_stack_center(from_layer=pin.layer,
to_layer=self.supply_stack[0],
to_layer=pin_layer,
offset=pin.center())
if last_via:
via_height=last_via.mod.second_layer_height
else:
via_height=None
self.add_layout_pin_segment_center(text=name,
layer=self.supply_stack[0],
layer=pin_layer,
start=vector(left_x, y),
end=vector(right_x, y))
end=vector(right_x, y),
width=via_height)
def add_layout_pin_segment_center(self, text, layer, start, end, width=None):
"""

24
compiler/modules/precharge_array.py
View File

@ -81,18 +81,20 @@ class precharge_array(design.design):
def add_layout_pins(self):
en_pin = self.pc_cell.get_pin("en_bar")
start_offset = en_pin.lc().scale(0, 1)
end_offset = start_offset + vector(self.width, 0)
self.add_layout_pin_segment_center(text="en_bar",
layer=self.en_bar_layer,
start=start_offset,
end=end_offset)
# en_pin = self.pc_cell.get_pin("en_bar")
# start_offset = en_pin.lc().scale(0, 1)
# end_offset = start_offset + vector(self.width, 0)
# self.add_layout_pin_segment_center(text="en_bar",
# layer=self.en_bar_layer,
# start=start_offset,
# end=end_offset)
for inst in self.local_insts:
self.add_via_stack_center(from_layer=en_pin.layer,
to_layer=self.en_bar_layer,
offset=inst.get_pin("en_bar").center())
# for inst in self.local_insts:
# self.add_via_stack_center(from_layer=en_pin.layer,
# to_layer=self.en_bar_layer,
# offset=inst.get_pin("en_bar").center())
self.route_horizontal_pin("en_bar", layer=self.en_bar_layer)
self.route_horizontal_pin("vdd")
for i in range(len(self.local_insts)):