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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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25
compiler/pgates/pgate.py
View File

@ -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")