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Add new power supplies to delay chain

This commit is contained in:
Matt Guthaus 2018-07-16 10:19:52 -07:00
parent f3ae29fe0b
commit 3bbb604504
2 changed files with 24 additions and 13 deletions
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13
compiler/base/hierarchy_layout.py
View File

@ -601,6 +601,19 @@ class layout(lef.lef):
width=xmax-xmin, width=xmax-xmin,
height=ymax-ymin) height=ymax-ymin)
def add_power_pin(self, name, loc):
"""
Add a single power pin from M3 own to M1
"""
self.add_via_center(layers=("metal1", "via1", "metal2"),
offset=loc,
rotate=90)
self.add_via_center(layers=("metal2", "via2", "metal3"),
offset=loc)
self.add_layout_pin_rect_center(text=name,
layer="metal3",
offset=loc)
def add_power_ring(self, bbox): def add_power_ring(self, bbox):
""" """
Create vdd and gnd power rings around an area of the bounding box argument. Must Create vdd and gnd power rings around an area of the bounding box argument. Must

24
compiler/modules/delay_chain.py
View File

@ -164,19 +164,17 @@ class delay_chain(design.design):
""" Add vdd and gnd rails and the input/output. Connect the gnd rails internally on """ Add vdd and gnd rails and the input/output. Connect the gnd rails internally on
the top end with no input/output to obstruct. """ the top end with no input/output to obstruct. """
for driver in self.driver_inst_list: for pin_name in ["vdd", "gnd"]:
vdd_pin = driver.get_pin("vdd") for driver in self.driver_inst_list:
self.add_layout_pin(text="vdd", pin = driver.get_pin(pin_name)
layer="metal1", start = pin.lc()
offset=vdd_pin.ll(), end = start + vector(self.width,0)
width=self.width, self.add_power_pin(pin_name, start)
height=vdd_pin.height()) self.add_power_pin(pin_name, end)
gnd_pin = driver.get_pin("gnd") self.add_rect(layer="metal1",
self.add_layout_pin(text="gnd", offset=pin.ll(),
layer="metal1", width=self.width,
offset=gnd_pin.ll(), height=pin.height())
width=self.width,
height=gnd_pin.height())
# input is A pin of first inverter # input is A pin of first inverter
a_pin = self.driver_inst_list[0].get_pin("A") a_pin = self.driver_inst_list[0].get_pin("A")