Efficient RC low-power bus encoding methods for crosstalk reduction

In on-chip buses, the RC crosstalk effect leads to serious problems, such as wire propagation delay and dynamic power dissipation. Crosstalk noise is dominated by the coupling capacitance, resulting in wire propagation delay, logical malfunction and power dissipation on on-chip buses. Therefore, eliminating crosstalk effects have become a very important consideration in the development of the bus encoding design. This project presents two efficient bus-coding methods. The proposed methods simultaneously reduce more dynamic power dissipation and wire propagation delay than existing bus encoding methods. Our methods also reduce more total power consumption than other encoding methods. The proposed methods transform the bus signal to reduce and eliminate the worst crosstalk types, i.e. Type-4, Type-3, and Type-2. They reduce power and wire propagation delay by decreasing the switching and coupling activities.