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taps in main array and decoder

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This commit is contained in:
Jacob Walker
2023-03-30 11:30:50 -07:00
parent f7aed247fd
commit 559300e5cc
14 changed files with 692 additions and 425 deletions
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compiler/modules/rom_wordline_driver_array.py
+30 -10
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@@ -19,14 +19,15 @@ class rom_wordline_driver_array(design):
Creates a Wordline Buffer/Inverter array
"""
def __init__(self, name, rows, cols):
def __init__(self, name, rows, cols, invert_outputs=False, tap_spacing=4):
design.__init__(self, name)
debug.info(1, "Creating {0}".format(self.name))
self.add_comment("rows: {0} cols: {1}".format(rows, cols))
self.rows = rows
self.cols = cols
self.invert_outputs=invert_outputs
self.tap_spacing = tap_spacing
self.create_netlist()
if not OPTS.netlist_only:
self.create_layout()
@@ -60,10 +61,25 @@ class rom_wordline_driver_array(design):
def add_modules(self):
b = factory.create(module_type="rom_base_cell")
self.wl_driver = factory.create(module_type="pbuf_dec",
size=self.cols,
height=b.height,
add_wells=False)
if self.invert_outputs:
self.wl_driver = factory.create(module_type="pinv_dec",
size=self.cols,
height=b.height,
add_wells=False)
self.wl_driver_tap = factory.create(module_type="pinv_dec",
size=self.cols,
add_wells=True)
else:
self.wl_driver = factory.create(module_type="pbuf_dec",
size=self.cols,
height=b.height,
add_wells=False)
self.wl_driver_tap = factory.create(module_type="pbuf_dec",
size=self.cols,
add_wells=True)
print(self.wl_driver.height)
print(self.wl_driver_tap.height)
def route_supplies(self):
"""
@@ -80,21 +96,25 @@ class rom_wordline_driver_array(design):
def create_drivers(self):
self.wld_inst = []
for row in range(self.rows):
self.wld_inst.append(self.add_inst(name="wld{0}".format(row),
mod=self.wl_driver))
if row % self.tap_spacing == 0:
self.wld_inst.append(self.add_inst(name="wld{0}".format(row),
mod=self.wl_driver_tap))
else:
self.wld_inst.append(self.add_inst(name="wld{0}".format(row),
mod=self.wl_driver))
self.connect_inst(["in_{0}".format(row),
"out_{0}".format(row),
"vdd", "gnd"])
def place_drivers(self):
y_offset = 0
for row in range(self.rows):
# These are flipped since we always start with an RBL on the bottom
y_offset = self.wl_driver.height * row
offset = [0, y_offset]
self.wld_inst[row].place(offset=offset)
y_offset += self.wld_inst[row].height
self.width = self.wl_driver.width
self.height = self.wl_driver.height * self.rows