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Switched to GF180D for extra metal layers, Fixed drc parameters so contacts are valid. ptx.py modified to achieve proper layer placement with gf180. ROM array and precharge DRC clean.

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This commit is contained in:
Sage Walker
2023-10-31 23:24:21 -07:00
committed by SWalker
parent 0040efb86f
commit d6cb15c82d
11 changed files with 129 additions and 51 deletions
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compiler/modules/rom_precharge_array.py
+6 -12
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@@ -17,9 +17,10 @@ class rom_precharge_array(design):
"""
An array of inverters to create the inverted address lines for the rom decoder
"""
def __init__(self, cols, name="", bitline_layer=None, strap_spacing=None, strap_layer="m2", tap_direction="row"):
def __init__(self, cols, name="", bitline_layer="m2", strap_spacing=None, strap_layer="m3", tap_direction="row"):
self.cols = cols
self.strap_layer = strap_layer
self.bitline_layer = bitline_layer
self.tap_direction = tap_direction
if "li" in layer:
@@ -27,14 +28,6 @@ class rom_precharge_array(design):
else:
self.supply_layer = "m1"
if bitline_layer is not None:
self.bitline_layer = bitline_layer
else:
self.bitline_layer = self.supply_layer
if name=="":
name = "rom_inv_array_{0}".format(cols)
if strap_spacing != None:
self.strap_spacing = strap_spacing
@@ -128,7 +121,7 @@ class rom_precharge_array(design):
for col in range(self.cols):
if col % self.strap_spacing == 0:
self.tap_insts[strap_num].place(vector(cell_x, cell_y + self.poly_tap.height))
self.tap_insts[strap_num].place(vector(cell_x + self.poly_space, cell_y + self.poly_tap.height))
strap_num += 1
if self.tap_direction == "col":
@@ -137,7 +130,7 @@ class rom_precharge_array(design):
self.pmos_insts[col].place(vector(cell_x, cell_y))
cell_x += self.pmos.width
self.tap_insts[strap_num].place(vector(cell_x, cell_y + self.poly_tap.height))
self.tap_insts[strap_num].place(vector(cell_x + self.poly_space, cell_y + self.poly_tap.height))
def create_layout_pins(self):
self.copy_layout_pin(self.tap_insts[0], "poly_tap", "gate")
@@ -158,11 +151,12 @@ class rom_precharge_array(design):
for tap in self.tap_insts:
tap_pin = tap.get_pin("poly_tap")
start = vector(tap_pin.cx(), tap_pin.by())
end = vector(start.x, tap.mod.get_pin("poly_tap").cy())
end = vector(start.x, self.pmos_insts[0].get_pin("G").cy())
self.add_segment_center(layer="poly", start=start, end=end)
offset_start = vector(end.x - self.poly_tap.width + self.poly_extend_active, end.y)
offset_end = end + vector(0.5*self.poly_width, 0)
self.add_segment_center(layer="poly", start=offset_start, end=offset_end)
self.add_segment_center(layer="poly", start=self.pmos_insts[-1].get_pin("G").center(), end=offset_end)
def extend_well(self):
self.well_offset = self.pmos.tap_offset