# SPDX-License-Identifier: Apache-2.0
# Copyright 2019 Blue Cheetah Analog Design Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import Dict, Any
import pkg_resources
from pathlib import Path
from bag.design.module import Module
from bag.design.database import ModuleDB
from bag.util.immutable import Param
# noinspection PyPep8Naming
[docs]class xbase__current_summer(Module):
"""Module for library xbase cell current_summer.
Fill in high level description here.
"""
[docs] yaml_file = pkg_resources.resource_filename(__name__,
str(Path('netlist_info',
'current_summer.yaml')))
def __init__(self, database: ModuleDB, params: Param, **kwargs: Any) -> None:
Module.__init__(self, self.yaml_file, database, params, **kwargs)
@classmethod
[docs] def get_params_info(cls) -> Dict[str, str]:
return dict(
nin='number of inputs',
)
[docs] def design(self, nin: int) -> None:
if nin < 2:
raise ValueError('Number of inputs must be >= 2.')
bus = f'<{nin - 1}:0>'
if nin != 2:
in_pin = 'in' + bus
self.rename_pin('in<1:0>', in_pin)
self.rename_instance('XTH<1:0>', 'XTH' + bus, [('src', in_pin), ('dst', 'out')])