Why we need behavioral model+DB cell in Power aware simulation ?

•        Behavioural model is must for simulation tool.

o   Behavioural model is necessary for simulation tool to do functional checks . From DB it cannot retrieve functionality of that DB cell.

o   DB cell is required mainly to get PG pin related information as in non-power aware behavioural model you will not have PG pin information.

•       DB information is optional .

o   If corresponding DB cell info is not provided than DB related checks will not be performed on that module and will be treated as simple Verilog module.

•        Below points can be considered as general guideline.

o   If user have non-power aware behavioural model for DB cell , provide both DB info + behavioural model to simulation tool.

o   If user have Power aware behavioural model for DB cell , Only behavioural model is enough ,provided you do not want to do any DB related checks on it.