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A highly energy efficient reconfigurable accelerator called CMA (Cool Mega-Array) is proposed. It consists of a large Processing Element (PE) array without memory elements for maintain result of ALU and configuration data, a small simple programmable micro controller for data management, and the data memory. Unlike traditional coarse grained reconfigurable processors, the power consumption for hardware...
Geyser-2 is the second prototype MIPS CPU which provides a fine-grained run-time power gating (PG) controlled by instructions. Geyser-l, the first prototype only provides the fine-grained run-time PG core. Although it demonstrated the leakage power reduction on a real chip, the operational frequency is limited at 60MHz because of the limitation of the I/O speed. Geyser-2 with cache and TLB mechanism...
MuCCRA-3 is a low power coarse-grained Dynamically Reconfigurable Processor Array (DRPA) for a flexible off-loading engine in various SoC (System-on-a-Chip). Similar to the other DRPAs, it has an array of processing elements (PEs), a simple coarse-grained processor, consisting of an ALU and a register file, and dynamic reconfiguration of the array enables time-multiplexed execution. DRPAs including...
A kind of image processing with a low power dynamically reconfigurable processor array (DRPA) prototype MuCCRA-3 implemented with 65 nm CMOS process will be shown. The measured power is also exhibited during execution, and compared with Xilinx Virtex-5 FPGA using exactly the same environment. The demonstration shows that more than 10 times better power efficient computation is achieved using MuCCRA-3...
One of the benefits of coarse grained dynamically reconfigurable processor array(DRPA) is its low dynamic power consumption by operating a number of processing elements(PE) in parallel with low clock frequency. However, in the future advanced processes, leakage power will occupy a considerable part of the total power consumption, and it may degrade the advantage of DRPAs. In order to reduce the leakage...
An IR-UWB system can achieve high resolution in ranging because it uses a very short pulse with a duration of less than 1 [ns]. In order to reduce cost and power consumption, a ranging system with high-speed comparators has been proposed. In this system, it is necessary to reduce noise power through averaging the comparator outputs. In this paper, the effect of clock offset on the averaging process...
The power consumption of dynamically reconfigurable processing array (DRPA) is quantitatively analyzed by using a real chip layout and applications taking into account the reconfiguration power. Evaluation result shows that processing power for PEs is dominant and reconfiguration power is about 20.7% of the total dynamic power consumption. Based on the above evaluation results, we proposed two dynamic...
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