diff --git a/compiler/modules/local_bitcell_array.py b/compiler/modules/local_bitcell_array.py index b08fc2e5..b125fb01 100644 --- a/compiler/modules/local_bitcell_array.py +++ b/compiler/modules/local_bitcell_array.py @@ -101,15 +101,7 @@ class local_bitcell_array(bitcell_base_array.bitcell_base_array): self.wordline_names.append(wordline_inputs) self.driver_wordline_outputs.append([x + "i" for x in self.wordline_names[-1]]) - self.gnd_wl_names = [] - - # Connect unused RBL WL to gnd - array_rbl_names = set([x for x in self.bitcell_array.get_all_wordline_names() if x.startswith("rbl")]) - dummy_rbl_names = set([x for x in self.bitcell_array.get_all_wordline_names() if x.startswith("dummy")]) - rbl_wl_names = set([x for rbl_port_names in self.wordline_names for x in rbl_port_names if x.startswith("rbl")]) - self.gnd_wl_names = list((array_rbl_names - rbl_wl_names) | dummy_rbl_names) - - self.all_array_wordline_inputs = [x + "i" if x not in self.gnd_wl_names else "gnd" for x in self.bitcell_array.get_all_wordline_names()] + self.all_array_wordline_inputs = [x + "i" for x in self.bitcell_array.get_all_wordline_names() if x != "gnd"] self.bitline_names = self.bitcell_array.bitline_names self.all_array_bitline_names = self.bitcell_array.get_all_bitline_names() @@ -157,26 +149,6 @@ class local_bitcell_array(bitcell_base_array.bitcell_base_array): self.height = self.bitcell_array.height self.width = max(self.bitcell_array_inst.rx(), max([x.rx() for x in self.wl_insts])) - def route_unused_wordlines(self): - """ Connect the unused RBL and dummy wordlines to gnd """ - - for wl_name in self.gnd_wl_names: - pin = self.bitcell_array_inst.get_pin(wl_name) - pin_layer = pin.layer - layer_pitch = 1.5 * getattr(self, "{}_pitch".format(pin_layer)) - left_pin_loc = pin.lc() - right_pin_loc = pin.rc() - - # Place the pins a track outside of the array - left_loc = left_pin_loc - vector(layer_pitch, 0) - right_loc = right_pin_loc + vector(layer_pitch, 0) - self.add_power_pin("gnd", left_loc, directions=("H", "H")) - self.add_power_pin("gnd", right_loc, directions=("H", "H")) - - # Add a path to connect to the array - self.add_path(pin_layer, [left_loc, left_pin_loc]) - self.add_path(pin_layer, [right_loc, right_pin_loc]) - def add_layout_pins(self): for x in self.get_inouts(): @@ -212,5 +184,4 @@ class local_bitcell_array(bitcell_base_array.bitcell_base_array): in_loc = in_pin.rc() self.add_path(out_pin.layer, [out_loc, mid_loc, in_loc]) - self.route_unused_wordlines()