luke/OpenRAM
1
0
Fork 0
mirror of https://github.com/VLSIDA/OpenRAM.git synced 2026-08-30 01:48:33 +02:00
Code Issues Packages Projects Releases Wiki Activity

Changes for test generation and simulation

Browse Source
This commit is contained in:
Jacob Walker
2023-03-30 11:30:50 -07:00
parent 89c7d50bd1
commit bbf2cd2913
12 changed files with 363 additions and 178 deletions
Download Patch File Download Diff File Expand all files Collapse all files
compiler/modules/rom_wordline_driver_array.py
+27 -11
View File
@@ -19,16 +19,16 @@ class rom_wordline_driver_array(design):
Creates a Wordline Buffer/Inverter array
"""
def __init__(self, name, rows, cols, invert_outputs=False, tap_spacing=4):
def __init__(self, name, rows, fanout, invert_outputs=False, tap_spacing=4, flip_io=False):
design.__init__(self, name)
debug.info(1, "Creating {0}".format(self.name))
self.add_comment("rows: {0} cols: {1}".format(rows, cols))
self.add_comment("rows: {0} Buffer size of: {1}".format(rows, fanout))
self.rows = rows
self.cols = cols
self.fanout = fanout
self.invert_outputs=invert_outputs
self.tap_spacing = tap_spacing
self.flip_io = flip_io
if OPTS.tech_name == "sky130":
self.supply_layer = "m1"
else:
@@ -51,7 +51,8 @@ class rom_wordline_driver_array(design):
self.place_drivers()
self.route_layout()
self.route_supplies()
self.place_taps()
if self.tap_spacing != 0:
self.place_taps()
self.add_boundary()
def add_pins(self):
@@ -70,13 +71,14 @@ class rom_wordline_driver_array(design):
if self.invert_outputs:
self.wl_driver = factory.create(module_type="pinv_dec",
size=self.cols,
size=self.fanout,
height=b.height,
add_wells=False)
add_wells=False,
flip_io=self.flip_io)
else:
self.wl_driver = factory.create(module_type="pbuf_dec",
size=self.cols,
size=self.fanout,
height=b.height,
add_wells=False)
@@ -108,7 +110,7 @@ class rom_wordline_driver_array(design):
def place_drivers(self):
y_offset = 0
for row in range(self.rows):
if row % self.tap_spacing == 0:
if self.tap_spacing != 0 and row % self.tap_spacing == 0:
y_offset += self.tap.pitch_offset
offset = [0, y_offset]
@@ -123,20 +125,34 @@ class rom_wordline_driver_array(design):
""" Route all of the signals """
route_width = drc["minwidth_{}".format(self.route_layer)]
for row in range(self.rows):
inst = self.wld_inst[row]
if self.flip_io:
row_num = self.rows - row - 1
else:
row_num = row
inst = self.wld_inst[row_num]
self.copy_layout_pin(inst, "vdd")
self.copy_layout_pin(inst, "gnd")
self.copy_layout_pin(inst, "A", "in_{0}".format(row))
out_pin = inst.get_pin("Z")
# output each WL on the right
wl_offset = inst.get_pin("Z").rc() - vector( 0.5 * route_width, 0)
if self.flip_io:
wl_offset = out_pin.lc() - vector(1.6 * route_width, 0)
else:
wl_offset = out_pin.rc() - vector( 0.5 * route_width, 0)
end = vector(wl_offset.x, \
self.get_pin("in_{}".format(row)).cy() + 0.5 * route_width)
self.add_segment_center(layer=self.route_layer,
start=wl_offset,
end=end)
if self.flip_io:
self.add_segment_center(layer=self.route_layer,
start=out_pin.lc(),
end=vector(wl_offset.x - 0.5 * route_width, out_pin.cy()))
self.add_layout_pin_rect_center(text="out_{}".format(row), layer=self.route_layer, offset=end - vector(0, 0.5 * route_width))