mirror of https://github.com/VLSIDA/OpenRAM.git
Add li_stack contact to ptx and pgate if it exists.
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mrg
parent
f491876a5a
commit
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@ -64,7 +64,7 @@ class pgate(design.design):
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width=source_pin.width())
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def route_input_gate(self, pmos_inst, nmos_inst, ypos, name, position="left"):
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"""
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"""
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Route the input gate to the left side of the cell for access.
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Position specifies to place the contact the left, center, or
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right of gate.
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@ -107,8 +107,12 @@ class pgate(design.design):
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else:
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debug.error("Invalid contact placement option.", -1)
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v=self.add_via_center(layers=self.poly_stack,
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offset=contact_offset)
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if hasattr(self, "li_stack"):
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self.add_via_center(layers=self.li_stack,
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offset=contact_offset)
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self.add_via_center(layers=self.poly_stack,
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offset=contact_offset)
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self.add_layout_pin_rect_center(text=name,
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layer="m1",
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@ -182,13 +186,17 @@ class pgate(design.design):
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contact_offset = vector(contact_xoffset, contact_yoffset)
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# Offset by half a contact in x and y
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contact_offset += vector(0.5 * pmos.active_contact.first_layer_width,
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0.5 * pmos.active_contact.first_layer_height)
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0.5 * pmos.active_contact.first_layer_height)
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self.nwell_contact = self.add_via_center(layers=layer_stack,
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offset=contact_offset,
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implant_type="n",
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well_type="n")
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if hasattr(self, "li_stack"):
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self.add_via_center(layers=self.li_stack,
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offset=contact_offset)
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self.add_rect_center(layer="m1",
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offset=contact_offset + vector(0, 0.5 * (self.height-contact_offset.y)),
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offset=contact_offset + vector(0, 0.5 * (self.height - contact_offset.y)),
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width=self.nwell_contact.mod.second_layer_width,
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height=self.height - contact_offset.y)
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@ -221,8 +229,6 @@ class pgate(design.design):
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layer_stack = self.active_stack
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pwell_position = vector(0, -0.5 * self.m1_width)
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# To the right a spacing away from the nmos right active edge
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contact_xoffset = nmos_pos.x + nmos.active_width \
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+ self.active_space
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@ -240,8 +246,13 @@ class pgate(design.design):
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offset=contact_offset,
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implant_type="p",
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well_type="p")
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if hasattr(self, "li_stack"):
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self.add_via_center(layers=self.li_stack,
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offset=contact_offset)
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self.add_rect_center(layer="m1",
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offset=contact_offset.scale(1,0.5),
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offset=contact_offset.scale(1, 0.5),
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width=self.pwell_contact.mod.second_layer_width,
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height=contact_offset.y)
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@ -390,19 +390,8 @@ class ptx(design.design):
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label = "S"
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pos = self.contact_offset
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if self.add_source_contact:
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contact=self.add_via_center(layers=self.active_stack,
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offset=pos,
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size=(1, self.num_contacts),
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directions=("V","V"),
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implant_type=self.implant_type,
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well_type=self.well_type)
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contact = self.add_diff_contact(label, pos)
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self.source_contacts.append(contact)
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if self.add_source_contact:
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self.add_layout_pin_rect_center(text=label,
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layer="m1",
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offset=pos,
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width=contact.mod.second_layer_width,
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height=contact.mod.second_layer_height)
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else:
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self.add_layout_pin_rect_center(text=label,
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layer="active",
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@ -423,17 +412,7 @@ class ptx(design.design):
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source_positions.append(pos)
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if (label=="S" and self.add_source_contact) or (label=="D" and self.add_drain_contact):
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contact=self.add_via_center(layers=self.active_stack,
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offset=pos,
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size=(1, self.num_contacts),
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directions=("V", "V"),
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implant_type=self.implant_type,
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well_type=self.well_type)
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self.add_layout_pin_rect_center(text=label,
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layer="m1",
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offset=pos,
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width=contact.mod.second_layer_width,
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height=contact.mod.second_layer_height)
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contact = self.add_diff_contact(label, pos)
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if label == "S":
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self.source_contacts.append(contact)
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else:
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@ -454,22 +433,11 @@ class ptx(design.design):
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source_positions.append(pos)
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if (label=="S" and self.add_source_contact) or (label=="D" and self.add_drain_contact):
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contact=self.add_via_center(layers=self.active_stack,
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offset=pos,
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size=(1, self.num_contacts),
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directions=("V", "V"),
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implant_type=self.implant_type,
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well_type=self.well_type)
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contact = self.add_diff_contact(label, pos)
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if label == "S":
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self.source_contacts.append(contact)
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else:
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self.drain_contacts.append(contact)
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if (label=="S" and self.add_source_contact) or (label=="D" and self.add_drain_contact):
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self.add_layout_pin_rect_center(text=label,
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layer="m1",
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offset=pos,
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width=contact.mod.second_layer_width,
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height=contact.mod.second_layer_height)
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else:
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self.add_layout_pin_rect_center(text=label,
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layer="active",
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@ -478,6 +446,25 @@ class ptx(design.design):
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if self.connect_active:
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self.connect_fingered_active(drain_positions, source_positions)
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def add_diff_contact(self, label, pos):
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contact=self.add_via_center(layers=self.active_stack,
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offset=pos,
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size=(1, self.num_contacts),
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directions=("V","V"),
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implant_type=self.implant_type,
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well_type=self.well_type)
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if hasattr(self, "li_stack"):
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self.add_via_center(layers=self.li_stack,
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offset=pos)
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self.add_layout_pin_rect_center(text=label,
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layer="m1",
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offset=pos,
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width=contact.mod.second_layer_width,
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height=contact.mod.second_layer_height)
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return(contact)
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def get_cin(self):
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"""Returns the relative gate cin of the tx"""
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return self.tx_width / drc("minwidth_tx")
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