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SRAM layout and functional tests with spare cols

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This commit is contained in:
Aditi Sinha
2020-06-03 12:31:30 +00:00
parent c7d86b21ae
commit eb0c595dbe
12 changed files with 373 additions and 77 deletions
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compiler/modules/write_driver_array.py
+10 -7
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@@ -142,7 +142,7 @@ class write_driver_array(design.design):
offset = self.num_wmasks
else:
offset = 1
name = "write_driver{}".format(index)
name = "write_driver{}".format(self.columns + i)
self.driver_insts[index]=self.add_inst(name=name,
mod=self.driver)
@@ -234,27 +234,30 @@ class write_driver_array(design.design):
for i in range(self.num_spare_cols):
inst = self.driver_insts[self.word_size + i]
en_pin = inst.get_pin(inst.mod.en_name)
self.add_layout_pin(text=self.en_name + "_{0}".format(i + self.num_wmasks),
layer="m1",
offset=inst.get_pin(inst.mod.en_name).ll(),
width=self.single_col_width - inst.get_pin(inst.mod.en_name).width())
offset=en_pin.ll(),
width=self.driver.width - en_pin.width())
elif self.num_spare_cols and not self.write_size:
# shorten enable rail to accomodate those for spare write drivers
inst = self.driver_insts[0]
en_pin = inst.get_pin(inst.mod.en_name)
self.add_layout_pin(text=self.en_name + "_{0}".format(0),
layer="m1",
offset=inst.get_pin(inst.mod.en_name).ll(),
width=self.width_regular_cols - (self.words_per_row * inst.get_pin(inst.mod.en_name).width()))
offset=en_pin.ll(),
width=self.width_regular_cols - self.words_per_row * en_pin.width())
# individual enables for every spare write driver
for i in range(self.num_spare_cols):
inst = self.driver_insts[self.word_size + i]
en_pin = inst.get_pin(inst.mod.en_name)
self.add_layout_pin(text=self.en_name + "_{0}".format(i + 1),
layer="m1",
offset=inst.get_pin(inst.mod.en_name).ll(),
width=self.single_col_width - inst.get_pin(inst.mod.en_name).width())
offset=en_pin.ll(),
width=self.driver.width - en_pin.width())
else:
inst = self.driver_insts[0]