Crosstalk-Aware Energy Efficient Encoding for Instruction Bus through Code Compression

Code compression techniques have been proposed to mitigate the problem of limited memory resources in embedded systems. As technology scales, reducing on-chip bus energy consumption is becoming important for embedded system designers. In this paper, we propose a crosstalk-aware energy-efficient code compression scheme, which can reduce inter-wire coupling transition induced instruction bus energy consumption, without sacrificing compression ratio. The experimental results show that the bus power consumption due to inter-wire coupling transition alone is reduced by 42-68% and the total bus power consumption is reduced by 55-71% for TMS320C6x benchmarks.