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Added way to determine length of en pin with wmask in write_driver_array and shortened en to width of driver.

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jsowash
2019-08-08 15:49:23 -07:00
parent 0cfa0ac755
commit 49fffcbc92
4 changed files with 21 additions and 11 deletions
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compiler/modules/write_driver_array.py
+12 -6
View File
@@ -107,12 +107,12 @@ class write_driver_array(design.design):
def place_write_array(self):
if self.bitcell.width > self.driver.width:
driver_spacing = self.bitcell.width
self.driver_spacing = self.bitcell.width
else:
driver_spacing = self.driver.width
self.driver_spacing = self.driver.width
for i in range(0,self.columns,self.words_per_row):
index = int(i/self.words_per_row)
base = vector(i * driver_spacing, 0)
base = vector(i * self.driver_spacing, 0)
self.driver_insts[index].place(base)
@@ -151,12 +151,18 @@ class write_driver_array(design.design):
if self.write_size is not None:
for bit in range(self.num_wmasks):
en_pin = self.driver_insts[bit*self.write_size].get_pin("en")
# modifier to stretch enable pin for column mux
modifier = (self.words_per_row-1) + 0.65
# Determine width of wmask modified en_pin with/without col mux
if (self.words_per_row == 1):
wmask_en_len = (self.write_size * self.driver_spacing)
en_gap = self.driver_spacing - en_pin.width()
else:
wmask_en_len = 2*(self.write_size * self.driver_spacing)
en_gap = self.driver_spacing
self.add_layout_pin(text="en_{0}".format(bit),
layer=en_pin.layer,
offset=en_pin.ll(),
width=modifier*self.write_size*en_pin.width(),
width=wmask_en_len-en_gap,
height=en_pin.height())
else:
self.add_layout_pin(text="en",
compiler/tests/10_write_driver_array_wmask_test.py
+6 -2
View File
@@ -23,8 +23,12 @@ class write_driver_test(openram_test):
globals.init_openram("config_{0}".format(OPTS.tech_name))
# check write driver array for single port
debug.info(2, "Testing write_driver_array for columns=8, word_size=8, write_size=2")
a = factory.create(module_type="write_driver_array", columns=8, word_size=8, write_size=2)
debug.info(2, "Testing write_driver_array for columns=8, word_size=8, write_size=4")
a = factory.create(module_type="write_driver_array", columns=8, word_size=8, write_size=4)
self.local_check(a)
debug.info(2, "Testing write_driver_array for columns=16, word_size=16, write_size=2")
a = factory.create(module_type="write_driver_array", columns=16, word_size=16, write_size=2)
self.local_check(a)
debug.info(2, "Testing write_driver_array for columns=16, word_size=8, write_size=4")