A Low Power Novel Encoding Technique for RC Modelled VLSI Interconnects

This paper proposes a novel bus encoding method that reduces the coupling transition among the data in RC interconnects. The coupling transition reduces by 37.5% along with 7.3% reduction in self transitions with respect to un-coded random data. The reduction of transitions also causes reduction in the worst-case crosstalk (Type-4) by 100% and other crosstalk types (Type-3 and Type-2) by 75.3% and 51.2% respectively. The proposed encoding method reduces coupling transition by almost 98.4% more as compared to other encoding methods. The reduction of crosstalk types in turn reduces power dissipation of the codec and interconnects by an average of 26.5% of existing encoding methods in 90 nm technology node whereas, average of 8.8% lesser power dissipation for 45 nm technology node. The power delay product of the proposed encoding method is also lowest as compared to other existing encoding methods.