Synthesis of low-overhead interfaces for power-efficient communication over wide buses
Proceedings of the 36th annual ACM/IEEE Design Automation Conference
A coding framework for low-power address and data busses
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
Adaptive Bus Encoding Technique for Switching Activity Reduced Data Transfer over Wide System Buses
PATMOS '00 Proceedings of the 10th International Workshop on Integrated Circuit Design, Power and Timing Modeling, Optimization and Simulation
Why Transition Coding for Power Minimization of On-Chip Buses Does Not Work
Proceedings of the conference on Design, automation and test in Europe - Volume 1
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In this paper a new adaptive system bus encoding technique is presented which reduces the power dissipation on a bus by minimizing the weight of the encoded data stream. It is based on dynamically auto-optimizing code tables which are used to map data words unambiguously to code words. The proposed encoding scheme is highly efficient due to its ability to adapt to varying statistical parameters of the data streams to be encoded. Unlike other adaptive techniques presented to date, which are infeasible to implement into hardware due to their tremendous overhead in self dissipated power, the implementation of our encoding technique requires less hardware overhead and does not modify the system bus interface. The fundamentals of the encoding scheme and a hardware-efficient implementation are given. Experimental results showed a reduction in bus transition activity of up to 38%.