Low power controller optimization based on data path pattern extraction

In this paper, we propose a technique to reduce the power consumption of the controller FSM of a data path in the specification level. Pattern extraction and sub-FSM creation are carried out during the synthesis of a datapath and the corresponding controller. The technique increases the number of zeros at the output of the main controller. Together with FSM partitioning technique, the new FSM specification will increase the occurrence of self-loop which results in a reduction of power consumption of the final controller implementation.