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

Add via when write driver supply is different layer

This commit is contained in:
mrg 2021-04-28 15:16:26 -07:00
parent 03e0c14ab2
commit fc6e6e1ec7
1 changed files with 12 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
compiler/modules/write_mask_and_array.py
View File

@ -117,9 +117,10 @@ class write_mask_and_array(design.design):
for i in range(self.num_wmasks): for i in range(self.num_wmasks):
# Route the A pin over to the left so that it doesn't conflict with the sense # Route the A pin over to the left so that it doesn't conflict with the sense
# amp output which is usually in the center # amp output which is usually in the center
a_pin = self.and2_insts[i].get_pin("A") inst = self.and2_insts[i]
a_pin = inst.get_pin("A")
a_pos = a_pin.center() a_pos = a_pin.center()
in_pos = vector(self.and2_insts[i].lx(), in_pos = vector(inst.lx(),
a_pos.y) a_pos.y)
self.add_via_stack_center(from_layer=a_pin.layer, self.add_via_stack_center(from_layer=a_pin.layer,
to_layer="m2", to_layer="m2",
@ -130,15 +131,22 @@ class write_mask_and_array(design.design):
self.add_path(a_pin.layer, [in_pos, a_pos]) self.add_path(a_pin.layer, [in_pos, a_pos])
# Copy remaining layout pins # Copy remaining layout pins
self.copy_layout_pin(self.and2_insts[i], "Z", "wmask_out_{0}".format(i)) self.copy_layout_pin(inst, "Z", "wmask_out_{0}".format(i))
# Add via connections to metal3 for AND array's B pin # Add via connections to metal3 for AND array's B pin
en_pin = self.and2_insts[i].get_pin("B") en_pin = inst.get_pin("B")
en_pos = en_pin.center() en_pos = en_pin.center()
self.add_via_stack_center(from_layer=en_pin.layer, self.add_via_stack_center(from_layer=en_pin.layer,
to_layer="m3", to_layer="m3",
offset=en_pos) offset=en_pos)
# Add connection to the supply
for supply_name in ["gnd", "vdd"]:
supply_pin = inst.get_pin(supply_name)
self.add_via_stack_center(from_layer=supply_pin.layer,
to_layer="m1",
offset=supply_pin.center())
for supply in ["gnd", "vdd"]: for supply in ["gnd", "vdd"]:
supply_pin = self.and2_insts[0].get_pin(supply) supply_pin = self.and2_insts[0].get_pin(supply)
supply_pin_yoffset = supply_pin.cy() supply_pin_yoffset = supply_pin.cy()