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# -*- coding: utf-8 -*-
from typing import Mapping, 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 bag3_analog__rdac_decoder(Module):
"""Module for library bag3_analog cell rdac_decoder.
Fill in high level description here.
"""
[docs] yaml_file = pkg_resources.resource_filename(__name__,
str(Path('netlist_info',
'rdac_decoder.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) -> Mapping[str, str]:
"""Returns a dictionary from parameter names to descriptions.
Returns
-------
param_info : Optional[Mapping[str, str]]
dictionary from parameter names to descriptions.
"""
return dict(
row_params='Parameters for rdac_decoder_row',
col_params='Parameters for rdac_decoder_col',
)
[docs] def design(self, row_params: Mapping[str, Any], col_params: Mapping[str, Any]) -> None:
"""To be overridden by subclasses to design this module.
This method should fill in values for all parameters in
self.parameters. To design instances of this module, you can
call their design() method or any other ways you coded.
To modify schematic structure, call:
rename_pin()
delete_instance()
replace_instance_master()
reconnect_instance_terminal()
restore_instance()
array_instance()
"""
# row decoder
self.instances['XROW'].design(**row_params)
num_sel_row: int = row_params['num_sel']
sel_row_suf = f'<{num_sel_row - 1}:0>'
# column decoder
self.instances['XCOL'].design(**col_params)
num_sel_col: int = col_params['num_sel']
sel_col_suf = f'<{num_sel_col - 1}:0>'
num_sel = num_sel_row + num_sel_col
sel_suf = f'<{num_sel - 1}:0>'
self.rename_pin('sel', f'sel{sel_suf}')
num_in = 1 << num_sel
in_suf = f'<{num_in - 1}:0>'
self.rename_pin('in', f'in{in_suf}')
num_rows = 1 << num_sel_row
row_suf = f'<{num_rows - 1}:0>'
self.reconnect_instance('XROW', [(f'in{row_suf}', f'mid{row_suf}'),
(f'sel{sel_row_suf}', f'sel<{num_sel - 1}:{num_sel_col}>')])
self.reconnect_instance('XCOL', [(f'in{in_suf}', f'in{in_suf}'), (f'out{row_suf}', f'mid{row_suf}'),
(f'sel{sel_col_suf}', f'sel{sel_col_suf}')])