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Multi-threaded processor designs enable high performance of a single processor core by exploiting both the thread-level and instruction-level parallelism. The performance gain is, however, at the cost of increasing energy consumption, which is not desirable to embedded systems. This paper investigates the energy efficiency of varied multi-threaded processor designs (with the coarse-grained and fine-grained...
Power consumption is a critical design issue in embedded systems. This paper presents a structural customization approach, targeting two basic design structures for a multiple choice function that is common in an embedded system: tree structure and chain structure. A theoretical comparison between these two structures is performed. We find that the chain structure has a lower area cost and offers...
The on-chip instruction cache is a potential power hungry component in embedded systems due to its large chip area and high access-frequency. Aiming at reducing power consumption of the on-chip cache, we proposed a Reduced One-Bit Tag Instruction Cache (ROBTIC), where the cache size is judiciously reduced and the cache tag field only contains the least significant bit of the full tag. We developed...
Power consumption is a critical design issue in embedded processors. One common component in the processor is the register file (RF). RF takes a large portion of processor area and consumes a significant amount of power. This paper proposes a customization approach at the hardware description modeling level to reduce the register file power consumption. The customization does not alter the RF interface...
The fast Fourier transform (FFT)is a computationally intensive digital signal processing(DSP)function widely used in applications such as imaging ,software-defined radio, wireless communication, instrumentation and machine inspection. Historically, this has been a relatively difficult function to implement optimally in hardware leading many software designers to use digital signal processors in soft...
Power consumption is a critical design issue in embedded processor design. One of common components in the processor is the Arithmetic and Logic Unit (ALU). Usually, ALUs are designed with a combinational logic circuit containing a number of functional components for different arithmetic and logic operations. An ALU can be constructed with a tree or a chain structure. Existing approaches to reduce...
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