bag3_testbenches.measurement.digital.max_trf
Module Contents
Classes
Tweaks a parameter as far as possible without exceeding max rise/fall time. |
- class bag3_testbenches.measurement.digital.max_trf.MaxRiseFallTime(*args: Any, **kwargs: Any)[source]
Bases:
bag3_testbenches.measurement.search.IntervalSearchMMTweaks a parameter as far as possible without exceeding max rise/fall time.
Notes
specification dictionary has the following entries:
- adj_namestr
the adjust parameter name.
- in_pinstr
input pin name.
- out_pinstr
output pin name.
- adj_signbool
True if increasing parameter value increases rise/fall time, False otherwise.
- max_trffloat
maximum rise/fall time, in seconds.
- use_dutbool
Optional. True to instantiate DUT. Defaults to True.
- search_paramsMapping[str, Any]
interval search parameters, with the following entries:
- lowfloat
lower bound.
- highOptional[float]
upper bound. If None, perform a unbounded binary search.
- stepfloat
initial step size for unbounded binary search.
- tolfloat
tolerance of the binary search. Terminate the search when it is below this value.
- max_errfloat
Used only in unbounded binary search. If unbounded binary search exceeds this value, raise an error.
- overhead_factorfloat
ratio of simulation startup time to time it takes to simulate one sweep point.
- tbm_specsMapping[str, Any]
DigitalTranTB related specifications. The following simulation parameters are required:
- t_rst :
reset duration.
- t_rst_rf :
reset rise/fall time.
- t_bit :
bit value duration.
- t_rf :
input pulse rise/fall time.
- wrapper_paramsMapping[str, Any]
Used only if simulated with a DUT wrapper. Contains the following entries:
- libstr
wrapper library name.
- cellstr
wrapper cell name.
- paramsMapping[str, Any]
DUT wrapper schematic parameters.
- pinsSequence[str]
wrapper pin list.
- power_domainMapping[str, Tuple[str, str]
power domain of wrapper.
- load_listSequence[Mapping[str, Any]]
Optional. List of loads. Each dictionary has the following entries:
- pin: str
the pin to connect to.
- typestr
the load device type.
- valueUnion[float, str]
the load parameter value.
- init_search(sim_db: bag.simulation.cache.SimulationDB, dut: bag.simulation.cache.DesignInstance) Tuple[bag.simulation.core.TestbenchManager, Mapping[str, Any], Mapping[str, Mapping[str, Any]], Mapping[str, Any], bool, bool][source]
Initialize this MeasurementManager.
- Returns:
tbm (TestbenchManager) – the TestbenchManager object.
tb_params (Mapping[str, Any]) – the testbench schematic parameters dictionary.
intv_params (Mapping[str, Mapping[str, Any]]) – A dictionary from search parameter name to its configuration dictionary. The values have the following entries:
- lowfloat
lower bound.
- highOptional[float]
upper bound. If None, perform a unbounded binary search.
- stepfloat
initial step size for unbounded binary search.
- tolfloat
tolerance of the binary search. Terminate the search when it is below this value.
- max_errfloat
Used only in unbounded binary search. If unbounded binary search exceeds this value, raise an error.
- overhead_factorfloat
ratio of simulation startup time to time it takes to simulate one sweep point.
intv_defaults (Mapping[str, Any]) – If any interval configuration are not specified, the value is taken from this dictionary.
has_init (bool) – True to run an initialization step.
use_dut (bool) – True to instantiate DUT.
- process_init(cur_info: bag.simulation.measure.MeasInfo, sim_results: bag.simulation.cache.SimResults) Tuple[Dict[str, Any], bool][source]
- process_output_helper(cur_info: bag.simulation.measure.MeasInfo, sim_results: bag.simulation.cache.SimResults, remaining: Set[str]) Mapping[str, Tuple[Tuple[float, float], Dict[str, Any], bool]][source]