Reducing bus transition activity by limited weight coding with codeword slimming

Transitions on high capacitance busses in VLSI systems result in considerable power dissipation. Various coding schemes have been proposed in literature to encode the input signal in order to reduce the number of transitions. Number of transitions can be reduced by introducing redundancy in data transferred over the busses. For a given amount of redundancy there exists a lower bound on the average number of transitions. In this paper we derive a new coding scheme which leads to extremely practical techniques for bus transmission that reduce bus transitions to within 3.96-8.42% of the lower bound depending on the redundancy employed. There is also a net reduction in power dissipation rang

• Type: Conference
• Year: 2000
• Where: GLVLSI
• Authors: Vijay Sundararajan, Keshab K. Parhi
• Keywords: Coding Scheme, GLVLSI 2000, Lower Bound, Power Dissipation, VLSI