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Fix length of write driver

This commit is contained in:
mrg 2020-09-29 16:51:55 -07:00
parent 8e908f016e
commit 066570bfeb
1 changed files with 11 additions and 13 deletions
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24
compiler/modules/write_driver_array.py
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@ -215,27 +215,25 @@ class write_driver_array(design.design):
start_layer=pin.layer) start_layer=pin.layer)
if self.write_size: if self.write_size:
for bit in range(self.num_wmasks): for bit in range(self.num_wmasks):
inst = self.driver_insts[bit * self.write_size] first_inst = self.driver_insts[bit * self.write_size]
en_pin = inst.get_pin(inst.mod.en_name) first_en_pin = first_inst.get_pin(first_inst.mod.en_name)
# Determine width of wmask modified en_pin with/without col mux
wmask_en_len = self.words_per_row * (self.write_size * self.driver_spacing)
if (self.words_per_row == 1):
en_gap = self.driver_spacing - en_pin.width()
else:
en_gap = self.driver_spacing
last_inst = self.driver_insts[(bit + 1) * self.write_size - 1]
last_en_pin = last_inst.get_pin(last_inst.mod.en_name)
wmask_en_len = last_en_pin.rx() - first_en_pin.lx()
self.add_layout_pin(text=self.en_name + "_{0}".format(bit), self.add_layout_pin(text=self.en_name + "_{0}".format(bit),
layer=en_pin.layer, layer=first_en_pin.layer,
offset=en_pin.ll(), offset=first_en_pin.ll(),
width=wmask_en_len - en_gap, width=wmask_en_len,
height=en_pin.height()) height=first_en_pin.height())
for i in range(self.num_spare_cols): for i in range(self.num_spare_cols):
inst = self.driver_insts[self.word_size + i] inst = self.driver_insts[self.word_size + i]
en_pin = inst.get_pin(inst.mod.en_name) en_pin = inst.get_pin(inst.mod.en_name)
self.add_layout_pin(text=self.en_name + "_{0}".format(i + self.num_wmasks), self.add_layout_pin(text=self.en_name + "_{0}".format(i + self.num_wmasks),
layer="m1", layer="m1",
offset=en_pin.lr() + vector(-drc("minwidth_m1"),0)) offset=en_pin.lr() + vector(-drc("minwidth_m1"), 0))
elif self.num_spare_cols and not self.write_size: elif self.num_spare_cols and not self.write_size:
# shorten enable rail to accomodate those for spare write drivers # shorten enable rail to accomodate those for spare write drivers