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Add M3 pins on dff_buf array

This commit is contained in:
Matt Guthaus 2018-04-11 12:09:15 -07:00
parent 4971dde316
commit 873be38e15
1 changed files with 29 additions and 18 deletions
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45
compiler/modules/dff_buf_array.py
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@ -101,22 +101,33 @@ class dff_buf_array(design.design):
def add_layout_pins(self): def add_layout_pins(self):
for y in range(self.rows): xoffsets = []
# Continous vdd rail along with label. for x in range(self.columns):
vdd_pin=self.dff_insts[0,y].get_pin("vdd") xoffsets.append(self.dff_insts[x,0].get_pin("gnd").lx())
self.add_layout_pin(text="vdd",
layer="metal1", for y in range(self.rows):
offset=vdd_pin.ll(),
width=self.width, # Route both supplies
height=self.m1_width) for n in ["vdd", "gnd"]:
supply_pin = self.dff_insts[0,y].get_pin(n)
supply_offset = supply_pin.ll()
self.add_rect(layer="metal1",
offset=supply_offset,
width=self.width)
# Add pins in two locations
for xoffset in xoffsets:
pin_pos = vector(xoffset, supply_pin.cy())
self.add_via_center(layers=("metal1", "via1", "metal2"),
offset=pin_pos,
rotate=90)
self.add_via_center(layers=("metal2", "via2", "metal3"),
offset=pin_pos,
rotate=90)
self.add_layout_pin_rect_center(text=n,
layer="metal3",
offset=pin_pos)
# Continous gnd rail along with label.
gnd_pin=self.dff_insts[0,y].get_pin("gnd")
self.add_layout_pin(text="gnd",
layer="metal1",
offset=gnd_pin.ll(),
width=self.width,
height=self.m1_width)
for y in range(self.rows): for y in range(self.rows):
@ -159,7 +170,7 @@ class dff_buf_array(design.design):
else: else:
self.add_layout_pin(text="clk", self.add_layout_pin(text="clk",
layer="metal3", layer="metal3",
offset=vector(0,0), offset=vector(0,2*self.m2_width),
width=self.width, width=self.width,
height=self.m3_width) height=self.m3_width)
for x in range(self.columns): for x in range(self.columns):
@ -172,7 +183,7 @@ class dff_buf_array(design.design):
height=self.height) height=self.height)
# Drop a via to the M3 pin # Drop a via to the M3 pin
self.add_via_center(layers=("metal2","via2","metal3"), self.add_via_center(layers=("metal2","via2","metal3"),
offset=clk_pin.center().scale(1,0)) offset=clk_pin.center().scale(1,0) + vector(0,2*self.m2_width))