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Fix via directions in s8 col mux

This commit is contained in:
mrg 2020-06-02 11:43:31 -07:00
parent a1c7474f80
commit 45b0601e4b
1 changed files with 17 additions and 7 deletions
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24
compiler/modules/single_level_column_mux_array.py
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@ -7,7 +7,7 @@
# #
import design import design
import debug import debug
from tech import layer from tech import layer, preferred_directions
from vector import vector from vector import vector
from sram_factory import factory from sram_factory import factory
from globals import OPTS from globals import OPTS
@ -33,10 +33,15 @@ class single_level_column_mux_array(design.design):
if "li" in layer: if "li" in layer:
self.col_mux_stack = self.li_stack self.col_mux_stack = self.li_stack
self.col_mux_stack_pitch = self.li_pitch self.col_mux_stack_pitch = self.m1_pitch
else: else:
self.col_mux_stack = self.m1_stack self.col_mux_stack = self.m1_stack
self.col_mux_stack_pitch = self.m1_pitch self.col_mux_stack_pitch = self.m1_pitch
if preferred_directions[self.col_mux_stack[0]] == "V":
self.via_directions = ("H", "H")
else:
self.via_directions = "pref"
self.create_netlist() self.create_netlist()
if not OPTS.netlist_only: if not OPTS.netlist_only:
@ -173,7 +178,8 @@ class single_level_column_mux_array(design.design):
self.get_pin("sel_{}".format(sel_index)).cy()) self.get_pin("sel_{}".format(sel_index)).cy())
# Add the poly contact with a shift to account for the rotation # Add the poly contact with a shift to account for the rotation
self.add_via_center(layers=self.poly_stack, self.add_via_center(layers=self.poly_stack,
offset=offset) offset=offset,
directions=self.via_directions)
self.add_path("poly", [offset, gate_offset]) self.add_path("poly", [offset, gate_offset])
def route_bitlines(self): def route_bitlines(self):
@ -224,11 +230,13 @@ class single_level_column_mux_array(design.design):
# This via is on the right of the wire # This via is on the right of the wire
self.add_via_center(layers=self.col_mux_stack, self.add_via_center(layers=self.col_mux_stack,
offset=bl_out_offset) offset=bl_out_offset,
directions=self.via_directions)
# This via is on the left of the wire # This via is on the left of the wire
self.add_via_center(layers=self.col_mux_stack, self.add_via_center(layers=self.col_mux_stack,
offset=br_out_offset) offset=br_out_offset,
directions=self.via_directions)
else: else:
self.add_path(self.col_mux_stack[2], [bl_out_offset, bl_offset]) self.add_path(self.col_mux_stack[2], [bl_out_offset, bl_offset])
@ -236,10 +244,12 @@ class single_level_column_mux_array(design.design):
# This via is on the right of the wire # This via is on the right of the wire
self.add_via_center(layers=self.col_mux_stack, self.add_via_center(layers=self.col_mux_stack,
offset=bl_out_offset) offset=bl_out_offset,
directions=self.via_directions)
# This via is on the left of the wire # This via is on the left of the wire
self.add_via_center(layers=self.col_mux_stack, self.add_via_center(layers=self.col_mux_stack,
offset=br_out_offset) offset=br_out_offset,
directions=self.via_directions)
def get_drain_cin(self): def get_drain_cin(self):
"""Get the relative capacitance of the drain of the NMOS pass TX""" """Get the relative capacitance of the drain of the NMOS pass TX"""