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We have developed a function-level power estimation methodology for predicting the power dissipation of embedded software. For a given microprocessor core, we empirically build the “power data bank”, which stores the power information of the built-in library functions and basic instructions. To estimate the average power of an embedded software(More)
This paper describes a fully automated low-power design methodology in which three different voltage-scaling techniques are combined together. Supply voltage is scaled globally, selectively, and adaptively while keeping the performance. This methodology enabled us to design an MPEG4 codec core with 58% less power than the original in three week(More)
We present a low-power design method that utilizes the multiple supply voltages. The proposed method reduces the power consumption of random logic circuits by 47% on the average, with up to 15% area overhead, by the combination of " clustered Voltage Scaling (CVS) scheme " and " Bow by Row optimized Power &pply (RRPS) scheme ". By the CVS scheme, the(More)
This paper proposes the ultrafine-grained run-time power gating of on-chip routers, in which the power supply to each router component (e.g., virtual-channel buffer, virtual-channel multiplexer, and crossbar multiplexer and output latch) can be individually controlled based on the applied workload. Since only the router components that are transferring a(More)
We propose a multi-voltage (multi-Vdd) variable pipeline router to reduce the power consumption of Network-on-Chips (NoCs) designed for chip multi-processors (CMPs). Our multi-Vdd variable pipeline router adjusts its pipeline depth (i.e., communication latency) and supply voltage level in response to the applied workload. Unlike dynamic voltage and(More)
This paper describes a gate-level power minimization methodology using dual supply voltages. Gates and flip-flops off the critical paths are made to operate at the reduced supply voltage to save power. Core technologies are dual-V/sub DD/ circuit synthesis and P&R. We give a brief overview on existing low-power EDA technologies as background and discuss(More)