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Fix routing clk connections of dff arrays

This commit is contained in:
Matt Guthaus 2018-07-18 11:38:58 -07:00
parent 0701fceb0b
commit f43d4cc98f
3 changed files with 107 additions and 140 deletions
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20
compiler/modules/dff_array.py
View File

@ -132,22 +132,20 @@ class dff_array(design.design):
width=self.m2_width,
height=self.height)
else:
self.add_layout_pin(text="clk",
layer="metal3",
offset=vector(0,self.m3_pitch),
width=self.width,
height=self.m3_width)
self.add_layout_pin_segment_center(text="clk",
layer="metal3",
start=vector(0,self.m3_pitch+self.m3_width),
end=vector(self.width,self.m3_pitch+self.m3_width))
for col in range(self.columns):
clk_pin = self.dff_insts[0,col].get_pin("clk")
# Make a vertical strip for each column
self.add_layout_pin(text="clk",
layer="metal2",
offset=clk_pin.ll().scale(1,0),
width=self.m2_width,
height=self.height)
self.add_rect(layer="metal2",
offset=clk_pin.ll().scale(1,0),
width=self.m2_width,
height=self.height)
# Drop a via to the M3 pin
self.add_via_center(layers=("metal2","via2","metal3"),
offset=clk_pin.center().scale(1,0))
offset=vector(clk_pin.cx(),self.m3_pitch+self.m3_width))

119
compiler/modules/dff_buf_array.py
View File

@ -17,7 +17,7 @@ class dff_buf_array(design.design):
self.columns = columns
if name=="":
name = "dff_array_{0}x{1}".format(rows, columns)
name = "dff_buf_array_{0}x{1}".format(rows, columns)
design.design.__init__(self, name)
debug.info(1, "Creating {}".format(self.name))
@ -36,35 +36,35 @@ class dff_buf_array(design.design):
self.DRC_LVS()
def add_pins(self):
for y in range(self.rows):
for x in range(self.columns):
self.add_pin(self.get_din_name(y,x))
for y in range(self.rows):
for x in range(self.columns):
self.add_pin(self.get_dout_name(y,x))
self.add_pin(self.get_dout_bar_name(y,x))
for row in range(self.rows):
for col in range(self.columns):
self.add_pin(self.get_din_name(row,col))
for row in range(self.rows):
for col in range(self.columns):
self.add_pin(self.get_dout_name(row,col))
self.add_pin(self.get_dout_bar_name(row,col))
self.add_pin("clk")
self.add_pin("vdd")
self.add_pin("gnd")
def create_dff_array(self):
self.dff_insts={}
for y in range(self.rows):
for x in range(self.columns):
name = "Xdff_r{0}_c{1}".format(y,x)
if (y % 2 == 0):
base = vector(x*self.dff.width,y*self.dff.height)
for row in range(self.rows):
for col in range(self.columns):
name = "Xdff_r{0}_c{1}".format(row,col)
if (row % 2 == 0):
base = vector(col*self.dff.width,row*self.dff.height)
mirror = "R0"
else:
base = vector(x*self.dff.width,(y+1)*self.dff.height)
base = vector(col*self.dff.width,(row+1)*self.dff.height)
mirror = "MX"
self.dff_insts[x,y]=self.add_inst(name=name,
mod=self.dff,
offset=base,
mirror=mirror)
self.connect_inst([self.get_din_name(y,x),
self.get_dout_name(y,x),
self.get_dout_bar_name(y,x),
self.dff_insts[row,col]=self.add_inst(name=name,
mod=self.dff,
offset=base,
mirror=mirror)
self.connect_inst([self.get_din_name(row,col),
self.get_dout_name(row,col),
self.get_dout_bar_name(row,col),
"clk",
"vdd",
"gnd"])
@ -100,58 +100,38 @@ class dff_buf_array(design.design):
return dout_bar_name
def add_layout_pins(self):
for row in range(self.rows):
for col in range(self.columns):
# Continous vdd rail along with label.
vdd_pin=self.dff_insts[row,col].get_pin("vdd")
self.add_power_pin("vdd", vdd_pin.lc())
xoffsets = []
for x in range(self.columns):
xoffsets.append(self.dff_insts[x,0].get_pin("gnd").lx())
for y in range(self.rows):
# Route both supplies
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[row,col].get_pin("gnd")
self.add_power_pin("gnd", gnd_pin.lc())
for y in range(self.rows):
for x in range(self.columns):
din_pin = self.dff_insts[x,y].get_pin("D")
for row in range(self.rows):
for col in range(self.columns):
din_pin = self.dff_insts[row,col].get_pin("D")
debug.check(din_pin.layer=="metal2","DFF D pin not on metal2")
self.add_layout_pin(text=self.get_din_name(y,x),
self.add_layout_pin(text=self.get_din_name(row,col),
layer=din_pin.layer,
offset=din_pin.ll(),
width=din_pin.width(),
height=din_pin.height())
dout_pin = self.dff_insts[x,y].get_pin("Q")
dout_pin = self.dff_insts[row,col].get_pin("Q")
debug.check(dout_pin.layer=="metal2","DFF Q pin not on metal2")
self.add_layout_pin(text=self.get_dout_name(y,x),
self.add_layout_pin(text=self.get_dout_name(row,col),
layer=dout_pin.layer,
offset=dout_pin.ll(),
width=dout_pin.width(),
height=dout_pin.height())
dout_bar_pin = self.dff_insts[x,y].get_pin("Qb")
dout_bar_pin = self.dff_insts[row,col].get_pin("Qb")
debug.check(dout_bar_pin.layer=="metal2","DFF Qb pin not on metal2")
self.add_layout_pin(text=self.get_dout_bar_name(y,x),
self.add_layout_pin(text=self.get_dout_bar_name(row,col),
layer=dout_bar_pin.layer,
offset=dout_bar_pin.ll(),
width=dout_bar_pin.width(),
@ -168,22 +148,21 @@ class dff_buf_array(design.design):
width=self.m2_width,
height=self.height)
else:
self.add_layout_pin(text="clk",
layer="metal3",
offset=vector(0,2*self.m2_width),
width=self.width,
height=self.m3_width)
for x in range(self.columns):
clk_pin = self.dff_insts[x,0].get_pin("clk")
self.add_layout_pin_segment_center(text="clk",
layer="metal3",
start=vector(0,self.m3_pitch+self.m3_width),
end=vector(self.width,self.m3_pitch+self.m3_width))
for col in range(self.columns):
clk_pin = self.dff_insts[0,col].get_pin("clk")
# Make a vertical strip for each column
self.add_layout_pin(text="clk",
layer="metal2",
offset=clk_pin.ll().scale(1,0),
width=self.m2_width,
height=self.height)
self.add_rect(layer="metal2",
offset=clk_pin.ll().scale(1,0),
width=self.m2_width,
height=self.height)
# Drop a via to the M3 pin
self.add_via_center(layers=("metal2","via2","metal3"),
offset=clk_pin.center().scale(1,0) + vector(0,2*self.m2_width))
offset=vector(clk_pin.cx(),self.m3_pitch+self.m3_width))

108
compiler/modules/dff_inv_array.py
View File

@ -17,7 +17,7 @@ class dff_inv_array(design.design):
self.columns = columns
if name=="":
name = "dff_array_{0}x{1}".format(rows, columns)
name = "dff_inv_array_{0}x{1}".format(rows, columns)
design.design.__init__(self, name)
debug.info(1, "Creating {}".format(self.name))
@ -36,35 +36,35 @@ class dff_inv_array(design.design):
self.DRC_LVS()
def add_pins(self):
for y in range(self.rows):
for x in range(self.columns):
self.add_pin(self.get_din_name(y,x))
for y in range(self.rows):
for x in range(self.columns):
self.add_pin(self.get_dout_name(y,x))
self.add_pin(self.get_dout_bar_name(y,x))
for row in range(self.rows):
for col in range(self.columns):
self.add_pin(self.get_din_name(row,col))
for row in range(self.rows):
for col in range(self.columns):
self.add_pin(self.get_dout_name(row,col))
self.add_pin(self.get_dout_bar_name(row,col))
self.add_pin("clk")
self.add_pin("vdd")
self.add_pin("gnd")
def create_dff_array(self):
self.dff_insts={}
for y in range(self.rows):
for x in range(self.columns):
name = "Xdff_r{0}_c{1}".format(y,x)
if (y % 2 == 0):
base = vector(x*self.dff.width,y*self.dff.height)
for row in range(self.rows):
for col in range(self.columns):
name = "Xdff_r{0}_c{1}".format(row,col)
if (row % 2 == 0):
base = vector(col*self.dff.width,row*self.dff.height)
mirror = "R0"
else:
base = vector(x*self.dff.width,(y+1)*self.dff.height)
base = vector(col*self.dff.width,(row+1)*self.dff.height)
mirror = "MX"
self.dff_insts[x,y]=self.add_inst(name=name,
mod=self.dff,
offset=base,
mirror=mirror)
self.connect_inst([self.get_din_name(y,x),
self.get_dout_name(y,x),
self.get_dout_bar_name(y,x),
self.dff_insts[row,col]=self.add_inst(name=name,
mod=self.dff,
offset=base,
mirror=mirror)
self.connect_inst([self.get_din_name(row,col),
self.get_dout_name(row,col),
self.get_dout_bar_name(row,col),
"clk",
"vdd",
"gnd"])
@ -100,47 +100,38 @@ class dff_inv_array(design.design):
return dout_bar_name
def add_layout_pins(self):
for y in range(self.rows):
# Continous vdd rail along with label.
vdd_pin=self.dff_insts[0,y].get_pin("vdd")
self.add_layout_pin(text="vdd",
layer="metal1",
offset=vdd_pin.ll(),
width=self.width,
height=self.m1_width)
for row in range(self.rows):
for col in range(self.columns):
# Continous vdd rail along with label.
vdd_pin=self.dff_insts[row,col].get_pin("vdd")
self.add_power_pin("vdd", vdd_pin.lc())
# 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)
# Continous gnd rail along with label.
gnd_pin=self.dff_insts[row,col].get_pin("gnd")
self.add_power_pin("gnd", gnd_pin.lc())
for y in range(self.rows):
for x in range(self.columns):
din_pin = self.dff_insts[x,y].get_pin("D")
for row in range(self.rows):
for col in range(self.columns):
din_pin = self.dff_insts[row,col].get_pin("D")
debug.check(din_pin.layer=="metal2","DFF D pin not on metal2")
self.add_layout_pin(text=self.get_din_name(y,x),
self.add_layout_pin(text=self.get_din_name(row,col),
layer=din_pin.layer,
offset=din_pin.ll(),
width=din_pin.width(),
height=din_pin.height())
dout_pin = self.dff_insts[x,y].get_pin("Q")
dout_pin = self.dff_insts[row,col].get_pin("Q")
debug.check(dout_pin.layer=="metal2","DFF Q pin not on metal2")
self.add_layout_pin(text=self.get_dout_name(y,x),
self.add_layout_pin(text=self.get_dout_name(row,col),
layer=dout_pin.layer,
offset=dout_pin.ll(),
width=dout_pin.width(),
height=dout_pin.height())
dout_bar_pin = self.dff_insts[x,y].get_pin("Qb")
dout_bar_pin = self.dff_insts[row,col].get_pin("Qb")
debug.check(dout_bar_pin.layer=="metal2","DFF Qb pin not on metal2")
self.add_layout_pin(text=self.get_dout_bar_name(y,x),
self.add_layout_pin(text=self.get_dout_bar_name(row,col),
layer=dout_bar_pin.layer,
offset=dout_bar_pin.ll(),
width=dout_bar_pin.width(),
@ -157,22 +148,21 @@ class dff_inv_array(design.design):
width=self.m2_width,
height=self.height)
else:
self.add_layout_pin(text="clk",
layer="metal3",
offset=vector(0,0),
width=self.width,
height=self.m3_width)
for x in range(self.columns):
clk_pin = self.dff_insts[x,0].get_pin("clk")
self.add_layout_pin_segment_center(text="clk",
layer="metal3",
start=vector(0,self.m3_pitch+self.m3_width),
end=vector(self.width,self.m3_pitch+self.m3_width))
for col in range(self.columns):
clk_pin = self.dff_insts[0,col].get_pin("clk")
# Make a vertical strip for each column
self.add_layout_pin(text="clk",
layer="metal2",
offset=clk_pin.ll().scale(1,0),
width=self.m2_width,
height=self.height)
self.add_rect(layer="metal2",
offset=clk_pin.ll().scale(1,0),
width=self.m2_width,
height=self.height)
# Drop a via to the M3 pin
self.add_via_center(layers=("metal2","via2","metal3"),
offset=clk_pin.center().scale(1,0))
offset=vector(clk_pin.cx(),self.m3_pitch+self.m3_width))