High-quality sub-function construction in the information-driven circuit synthesis with gates

The opportunities created by modern microelectronic technology cannot effectively be exploited, because of weaknesses in traditional circuit synthesis methods used in today's CAD tools. In this paper, a new information-driven circuit synthesis method is discussed that targets combinational circuits implemented with gates. The synthesis method is based on our original information-driven approach to circuit synthesis, bottom-up general functional decomposition and theory of information relationship measures, and considerably differs from all other known methods. The discussion is focused on various sub-function construction methods used during the synthesis. The experimental results from the automatic circuit synthesis tool that implements the method show that the developed by us specific sub-function construction methods targeted to the gate-based circuits deliver much better circuits than the other methods and demonstrate that the information-driven general decomposition produces very fast and compact gate-based circuits.