luke
/
OpenRAM
mirror of https://github.com/VLSIDA/OpenRAM.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Moved pwr/gnd vias and corrected width boundary.

This commit is contained in:
jsowash 2019-08-20 09:14:23 -07:00
parent 316132a33c
commit 71af70a636
1 changed files with 24 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
compiler/modules/write_mask_and_array.py
View File

@ -44,12 +44,10 @@ class write_mask_and_array(design.design):
def create_layout(self):
self.width = self.num_wmasks * self.and2.width
self.height = self.and2.height
self.place_and2_array()
spacing = self.wmask_en_len - self.and2.width
self.width = (self.num_wmasks*self.and2.width) + ((self.num_wmasks-1)*spacing)
self.height = self.and2.height
self.add_layout_pins()
self.add_boundary()
self.DRC_LVS()
@ -102,6 +100,7 @@ class write_mask_and_array(design.design):
wmask_en_len = self.words_per_row * (self.write_size * self.driver_spacing)
if wmask_en_len < self.and2.width:
debug.error("Cannot layout write mask AND array. One pand2 is longer than the corresponding write drivers.")
self.wmask_en_len = wmask_en_len
for i in range(self.num_wmasks):
base = vector(i * wmask_en_len, 0)
@ -109,6 +108,8 @@ class write_mask_and_array(design.design):
def add_layout_pins(self):
self.nand2 = factory.create(module_type="pnand2")
supply_pin=self.nand2.get_pin("vdd")
for i in range(self.num_wmasks):
wmask_in_pin = self.and2_insts[i].get_pin("A")
self.add_layout_pin(text="wmask_in_{0}".format(i),
@ -118,8 +119,10 @@ class write_mask_and_array(design.design):
height=wmask_in_pin.height())
en_pin = self.and2_insts[i].get_pin("B")
# Add the M1->M2 stack
self.add_via_center(layers=("metal1", "via1", "metal2"),
offset=en_pin.center())
# Add the M2->M3 stack
self.add_via_center(layers=("metal2", "via2", "metal3"),
offset=en_pin.center())
@ -137,19 +140,22 @@ class write_mask_and_array(design.design):
width=wmask_out_pin.width(),
height=wmask_out_pin.height())
for n in ["vdd", "gnd"]:
pin_list = self.and2_insts[i].get_pins(n)
for pin in pin_list:
pin_pos = pin.center()
# Add the M1->M2 stack
self.add_via_center(layers=("metal1", "via1", "metal2"),
offset=pin_pos)
# Add the M2->M3 stack
self.add_via_center(layers=("metal2", "via2", "metal3"),
offset=pin_pos)
self.add_layout_pin_rect_center(text=n,
layer="metal3",
offset=pin_pos)
self.add_via_center(layers=("metal1", "via1", "metal2"),
offset=vector(supply_pin.width()+i*self.wmask_en_len,0))
self.add_via_center(layers=("metal2", "via2", "metal3"),
offset=vector(supply_pin.width()+i*self.wmask_en_len,0))
self.add_layout_pin_rect_center(text="gnd",
layer="metal3",
offset=vector(supply_pin.width()+i*self.wmask_en_len,0))
self.add_via_center(layers=("metal1", "via1", "metal2"),
offset=vector(supply_pin.width()+i*self.wmask_en_len, self.height))
self.add_via_center(layers=("metal2", "via2", "metal3"),
offset=vector(supply_pin.width()+i*self.wmask_en_len, self.height))
self.add_layout_pin_rect_center(text="vdd",
layer="metal3",
offset=vector(supply_pin.width()+i*self.wmask_en_len, self.height))
def en_width(self, pin):
en_pin = self.and2_insts[pin].get_pin("B")