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Add li_stack contact to ptx and pgate if it exists.

This commit is contained in:
mrg 2020-03-23 16:55:38 -07:00
parent f491876a5a
commit e9d0db44fd
2 changed files with 41 additions and 43 deletions
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27
compiler/pgates/pgate.py
View File

@ -64,7 +64,7 @@ class pgate(design.design):
width=source_pin.width()) width=source_pin.width())
def route_input_gate(self, pmos_inst, nmos_inst, ypos, name, position="left"): def route_input_gate(self, pmos_inst, nmos_inst, ypos, name, position="left"):
""" """
Route the input gate to the left side of the cell for access. Route the input gate to the left side of the cell for access.
Position specifies to place the contact the left, center, or Position specifies to place the contact the left, center, or
right of gate. right of gate.
@ -107,8 +107,12 @@ class pgate(design.design):
else: else:
debug.error("Invalid contact placement option.", -1) debug.error("Invalid contact placement option.", -1)
v=self.add_via_center(layers=self.poly_stack, if hasattr(self, "li_stack"):
offset=contact_offset) self.add_via_center(layers=self.li_stack,
offset=contact_offset)
self.add_via_center(layers=self.poly_stack,
offset=contact_offset)
self.add_layout_pin_rect_center(text=name, self.add_layout_pin_rect_center(text=name,
layer="m1", layer="m1",
@ -182,13 +186,17 @@ class pgate(design.design):
contact_offset = vector(contact_xoffset, contact_yoffset) contact_offset = vector(contact_xoffset, contact_yoffset)
# Offset by half a contact in x and y # Offset by half a contact in x and y
contact_offset += vector(0.5 * pmos.active_contact.first_layer_width, contact_offset += vector(0.5 * pmos.active_contact.first_layer_width,
0.5 * pmos.active_contact.first_layer_height) 0.5 * pmos.active_contact.first_layer_height)
self.nwell_contact = self.add_via_center(layers=layer_stack, self.nwell_contact = self.add_via_center(layers=layer_stack,
offset=contact_offset, offset=contact_offset,
implant_type="n", implant_type="n",
well_type="n") well_type="n")
if hasattr(self, "li_stack"):
self.add_via_center(layers=self.li_stack,
offset=contact_offset)
self.add_rect_center(layer="m1", self.add_rect_center(layer="m1",
offset=contact_offset + vector(0, 0.5 * (self.height-contact_offset.y)), offset=contact_offset + vector(0, 0.5 * (self.height - contact_offset.y)),
width=self.nwell_contact.mod.second_layer_width, width=self.nwell_contact.mod.second_layer_width,
height=self.height - contact_offset.y) height=self.height - contact_offset.y)
@ -221,8 +229,6 @@ class pgate(design.design):
layer_stack = self.active_stack layer_stack = self.active_stack
pwell_position = vector(0, -0.5 * self.m1_width)
# To the right a spacing away from the nmos right active edge # To the right a spacing away from the nmos right active edge
contact_xoffset = nmos_pos.x + nmos.active_width \ contact_xoffset = nmos_pos.x + nmos.active_width \
+ self.active_space + self.active_space
@ -240,8 +246,13 @@ class pgate(design.design):
offset=contact_offset, offset=contact_offset,
implant_type="p", implant_type="p",
well_type="p") well_type="p")
if hasattr(self, "li_stack"):
self.add_via_center(layers=self.li_stack,
offset=contact_offset)
self.add_rect_center(layer="m1", self.add_rect_center(layer="m1",
offset=contact_offset.scale(1,0.5), offset=contact_offset.scale(1, 0.5),
width=self.pwell_contact.mod.second_layer_width, width=self.pwell_contact.mod.second_layer_width,
height=contact_offset.y) height=contact_offset.y)

57
compiler/pgates/ptx.py
View File

@ -390,19 +390,8 @@ class ptx(design.design):
label = "S" label = "S"
pos = self.contact_offset pos = self.contact_offset
if self.add_source_contact: if self.add_source_contact:
contact=self.add_via_center(layers=self.active_stack, contact = self.add_diff_contact(label, pos)
offset=pos,
size=(1, self.num_contacts),
directions=("V","V"),
implant_type=self.implant_type,
well_type=self.well_type)
self.source_contacts.append(contact) self.source_contacts.append(contact)
if self.add_source_contact:
self.add_layout_pin_rect_center(text=label,
layer="m1",
offset=pos,
width=contact.mod.second_layer_width,
height=contact.mod.second_layer_height)
else: else:
self.add_layout_pin_rect_center(text=label, self.add_layout_pin_rect_center(text=label,
layer="active", layer="active",
@ -423,17 +412,7 @@ class ptx(design.design):
source_positions.append(pos) source_positions.append(pos)
if (label=="S" and self.add_source_contact) or (label=="D" and self.add_drain_contact): if (label=="S" and self.add_source_contact) or (label=="D" and self.add_drain_contact):
contact=self.add_via_center(layers=self.active_stack, contact = self.add_diff_contact(label, pos)
offset=pos,
size=(1, self.num_contacts),
directions=("V", "V"),
implant_type=self.implant_type,
well_type=self.well_type)
self.add_layout_pin_rect_center(text=label,
layer="m1",
offset=pos,
width=contact.mod.second_layer_width,
height=contact.mod.second_layer_height)
if label == "S": if label == "S":
self.source_contacts.append(contact) self.source_contacts.append(contact)
else: else:
@ -454,22 +433,11 @@ class ptx(design.design):
source_positions.append(pos) source_positions.append(pos)
if (label=="S" and self.add_source_contact) or (label=="D" and self.add_drain_contact): if (label=="S" and self.add_source_contact) or (label=="D" and self.add_drain_contact):
contact=self.add_via_center(layers=self.active_stack, contact = self.add_diff_contact(label, pos)
offset=pos,
size=(1, self.num_contacts),
directions=("V", "V"),
implant_type=self.implant_type,
well_type=self.well_type)
if label == "S": if label == "S":
self.source_contacts.append(contact) self.source_contacts.append(contact)
else: else:
self.drain_contacts.append(contact) self.drain_contacts.append(contact)
if (label=="S" and self.add_source_contact) or (label=="D" and self.add_drain_contact):
self.add_layout_pin_rect_center(text=label,
layer="m1",
offset=pos,
width=contact.mod.second_layer_width,
height=contact.mod.second_layer_height)
else: else:
self.add_layout_pin_rect_center(text=label, self.add_layout_pin_rect_center(text=label,
layer="active", layer="active",
@ -478,6 +446,25 @@ class ptx(design.design):
if self.connect_active: if self.connect_active:
self.connect_fingered_active(drain_positions, source_positions) self.connect_fingered_active(drain_positions, source_positions)
def add_diff_contact(self, label, pos):
contact=self.add_via_center(layers=self.active_stack,
offset=pos,
size=(1, self.num_contacts),
directions=("V","V"),
implant_type=self.implant_type,
well_type=self.well_type)
if hasattr(self, "li_stack"):
self.add_via_center(layers=self.li_stack,
offset=pos)
self.add_layout_pin_rect_center(text=label,
layer="m1",
offset=pos,
width=contact.mod.second_layer_width,
height=contact.mod.second_layer_height)
return(contact)
def get_cin(self): def get_cin(self):
"""Returns the relative gate cin of the tx""" """Returns the relative gate cin of the tx"""
return self.tx_width / drc("minwidth_tx") return self.tx_width / drc("minwidth_tx")