Simple framework for physical chip design (place & route) based on KLayout.
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# Copyright (c) 2020-2021 Thomas Kramer.
# This file is part of klayout-pnr
# (see
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# GNU Affero General Public License for more details.
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <>.
Data-structure for representing a simple digital macro block throughout the place-and-route flow.
from .klayout_helper import db
from typing import Dict
class SimpleDesign:
Design of a simple digital macro block which consists of standard-cells only.
def __init__(self):
self.layout: db.Layout = None
self.netlist: db.Netlist = None
# The circuit which describes the connectivity of the standard-cells.
self.top_circuit: db.Circuit = None
# The top cell of this macro block.
self.top_cell: db.Cell = None
# The area where standard-cells should be placed.
self.core_area: db.DSimplePolygon = None
# Mapping between layout cells and netlist cells.
self.cell_instances_by_subcircuit_id: Dict[int, db.CellInstArray] = dict()