luke/OpenRAM
1
0
Fork 0
mirror of https://github.com/VLSIDA/OpenRAM.git synced 2026-08-30 09:58:33 +02:00
Code Issues Packages Projects Releases Wiki Activity

Merge branch 'add_wmask' into dev

Browse Source
This commit is contained in:
Matt Guthaus
2019-08-22 15:01:41 -07:00
parent 9f54afbf2c bdf29c3a26
commit ee2456f433
23 changed files with 855 additions and 277 deletions
Download Patch File Download Diff File Expand all files Collapse all files
compiler/modules/write_driver_array.py
+27 -15
View File
@@ -49,7 +49,6 @@ class write_driver_array(design.design):
self.width = self.columns * self.bitcell.width
else:
self.width = self.columns * self.driver.width
self.height = self.driver.height
self.place_write_array()
@@ -63,9 +62,9 @@ class write_driver_array(design.design):
for i in range(self.word_size):
self.add_pin("bl_{0}".format(i), "OUTPUT")
self.add_pin("br_{0}".format(i), "OUTPUT")
if self.write_size != None:
if self.write_size is not None:
for i in range(self.num_wmasks):
self.add_pin("en_{}".format(i), "INPUT")
self.add_pin("en_{0}".format(i), "INPUT")
else:
self.add_pin("en", "INPUT")
self.add_pin("vdd", "POWER")
@@ -95,6 +94,7 @@ class write_driver_array(design.design):
"br_{0}".format(index),
"en_{0}".format(windex), "vdd", "gnd"])
w+=1
# when w equals write size, the next en pin can be connected since we are now at the next wmask bit
if w == self.write_size:
w = 0
windex+=1
@@ -107,13 +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)
index = int(i/self.words_per_row)
base = vector(i * self.driver_spacing, 0)
self.driver_insts[index].place(base)
@@ -149,15 +148,28 @@ class write_driver_array(design.design):
self.add_layout_pin_rect_center(text=n,
layer="metal3",
offset=pin_pos)
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")
# 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
self.add_layout_pin(text="en_{0}".format(bit),
layer=en_pin.layer,
offset=en_pin.ll(),
width=wmask_en_len-en_gap,
height=en_pin.height())
else:
self.add_layout_pin(text="en",
layer="metal1",
offset=self.driver_insts[0].get_pin("en").ll().scale(0,1),
width=self.width)
self.add_layout_pin(text="en",
layer="metal1",
offset=self.driver_insts[0].get_pin("en").ll().scale(0,1),
width=self.width,
height=drc('minwidth_metal1'))
def get_w_en_cin(self):