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Spare cols with wmask enabled

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This commit is contained in:
Aditi Sinha
2020-05-16 10:09:03 +00:00
parent c14190c5aa
commit c7d86b21ae
6 changed files with 185 additions and 9 deletions
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compiler/modules/write_driver_array.py
+17 -5
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@@ -85,9 +85,9 @@ class write_driver_array(design.design):
self.add_pin(self.get_bl_name() + "_{0}".format(i), "OUTPUT")
self.add_pin(self.get_br_name() + "_{0}".format(i), "OUTPUT")
if self.write_size:
for i in range(self.num_wmasks):
for i in range(self.num_wmasks + self.num_spare_cols):
self.add_pin(self.en_name + "_{0}".format(i), "INPUT")
elif self.num_spare_cols:
elif self.num_spare_cols and not self.write_size:
for i in range(self.num_spare_cols + 1):
self.add_pin(self.en_name + "_{0}".format(i), "INPUT")
else:
@@ -124,7 +124,7 @@ class write_driver_array(design.design):
w = 0
windex+=1
elif self.num_spare_cols:
elif self.num_spare_cols and not self.write_size:
self.connect_inst([self.data_name + "_{0}".format(index),
self.get_bl_name() + "_{0}".format(index),
self.get_br_name() + "_{0}".format(index),
@@ -138,6 +138,10 @@ class write_driver_array(design.design):
for i in range(self.num_spare_cols):
index = self.word_size + i
if self.write_size:
offset = self.num_wmasks
else:
offset = 1
name = "write_driver{}".format(index)
self.driver_insts[index]=self.add_inst(name=name,
mod=self.driver)
@@ -145,7 +149,7 @@ class write_driver_array(design.design):
self.connect_inst([self.data_name + "_{0}".format(index),
self.get_bl_name() + "_{0}".format(index),
self.get_br_name() + "_{0}".format(index),
self.en_name + "_{0}".format(i + 1), "vdd", "gnd"])
self.en_name + "_{0}".format(i + offset), "vdd", "gnd"])
def place_write_array(self):
@@ -227,8 +231,16 @@ class write_driver_array(design.design):
offset=en_pin.ll(),
width=wmask_en_len - en_gap,
height=en_pin.height())
for i in range(self.num_spare_cols):
inst = self.driver_insts[self.word_size + i]
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())
elif self.num_spare_cols:
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]
self.add_layout_pin(text=self.en_name + "_{0}".format(0),