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OpenRAM
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1kb rom DRC clean

This commit is contained in:
Jacob Walker 2023-03-21 14:46:05 -07:00
parent 7805fcb21e
commit c1fb3cab6c
2 changed files with 27 additions and 8 deletions
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8
compiler/modules/rom_bank.py
View File

@ -475,10 +475,10 @@ class rom_bank(design):
for pin_name in ["vdd", "gnd"]: for pin_name in ["vdd", "gnd"]:
# Copy the pin shape(s) to rectangles # Copy the pin shape(s) to rectangles
for pin in self.get_pins(pin_name): for pin in self.get_pins(pin_name):
self.add_rect(pin.layer, self.add_rect(layer=pin.layer,
pin.ll(), offset=pin.ll(),
pin.width(), width=pin.width(),
pin.height()) height=pin.height())
# Remove the pin shape(s) # Remove the pin shape(s)
self.remove_layout_pin(pin_name) self.remove_layout_pin(pin_name)

27
compiler/modules/rom_base_array.py
View File

@ -209,17 +209,36 @@ class rom_base_array(bitcell_base_array):
if self.tap_direction == "row": if self.tap_direction == "row":
self.connect_row_pins(layer=self.wordline_layer, pins=self.gnd_taps, name="gnd") self.connect_row_pins(layer=self.wordline_layer, pins=self.gnd_taps, name="gnd")
self.remove_layout_pin("gnd_tap") self.remove_layout_pin("gnd_tap")
if self.tap_direction == "col": if self.tap_direction == "col":
self.remove_layout_pin("gnd")
active_tap_pins = [self.active_tap_list[i].get_pin("active_tap") for i in range(len(self.active_tap_list))] active_tap_pins = [self.active_tap_list[i].get_pin("active_tap") for i in range(len(self.active_tap_list))]
self.connect_col_pins(layer=self.supply_stack[0], pins=active_tap_pins, name="gnd_tmp") self.connect_col_pins(layer=self.supply_stack[0], pins=active_tap_pins, name="gnd_tmp")
gnd_y = gnd_l.y
min_x = float('inf')
max_x = 0
for pin in self.get_pins("gnd_tmp"): for pin in self.get_pins("gnd_tmp"):
bottom = vector(pin.cx(), pin.by() + 0.5 * drc("minwidth_{}".format(self.supply_stack[0])))
top = vector(pin.cx(), pin.uy() - 0.5 * drc("minwidth_{}".format(self.supply_stack[0]))) # find the pins on the edges
self.add_layout_pin_rect_ends(layer=self.supply_stack[0], start=bottom, end=top, name="gnd") if pin.cx() < min_x:
min_x = pin.cx()
if pin.cx() > max_x:
max_x = pin.cx()
bottom = vector(pin.cx(), pin.by())
top = vector(pin.cx(), gnd_y)
self.add_via_stack_center(offset=top, from_layer=self.bitline_layer, to_layer=self.supply_stack[0])
self.add_via_center(offset=bottom, layers=self.supply_stack)
self.add_layout_pin_rect_ends(name="gnd", layer=self.supply_stack[0], start=bottom, end=top)
self.remove_layout_pin("gnd_tmp") self.remove_layout_pin("gnd_tmp")
self.add_segment_center(layer=self.supply_stack[2], start=vector(min_x, bottom.y), end=vector(max_x, bottom.y))
self.add_segment_center(layer=self.bitline_layer, start=gnd_l, end=vector(min_x, gnd_l.y))
self.add_segment_center(layer=self.bitline_layer, start=gnd_r, end=vector(max_x, gnd_r.y))
self.copy_layout_pin(self.precharge_inst, "vdd") self.copy_layout_pin(self.precharge_inst, "vdd")