Transition pattern coding: An approach to reduce energy in interconnect

In this paper, we present a comprehensive energy dissipation model for data busses assuming a complete set of distributed RLC parasitics. Inter-wire parasitic capacitance contributes to significant energy loss during transitions. In this paper, we present a coding strategy (termed Transition Pattern Coding) that modifies the transition profiles to reduce switching energy. Using TPC, certain types of transitions are favored relative to others. We show that in the presence of capacitive coupling between the wires, our approach significantly outperforms previous coding schemes. Using TPC, up to 50% of energy saving is possible with sub-micron technologies.