Power estimation of embedded multiplier blocks in FPGAs

  • Authors:
  • Ruzica Jevtic;Carlos Carreras

  • Affiliations:
  • Departamento de Ingenieria Electrónica, ETSI Telecomunicacion, Universidad Politécnica de Madrid, Madrid, Spain;Departamento de Ingenieria Electrónica, ETSI Telecomunicacion, Universidad Politécnica de Madrid, Madrid, Spain

  • Venue:
  • IEEE Transactions on Very Large Scale Integration (VLSI) Systems
  • Year:
  • 2010

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Abstract

The use of embedded multiplier blocks has become a norm in DSP applications due to their high performance and low power consomption. However, as their implementation details in commercial field-programmable gate arrays are not available to users, and the power estimates given by the tested low-level tool are not accurate enough to validate high-level models, the work on power estimation of these blocks is very limited. We present a dynamic power estimation methodology for the embedded multipliers in Xilinx Virtex-II Pro chips. The methodology is an adaptation of an existing power estimation method for lookup-table-based components and uses information about the type of architecture of the embedded block. The power model is characterized and verified by on-board measurements and is ready for integration with high-level power optimization techniques. The experimental results show that the average accuracy of the model is higher than the average accuracy of the low-level commercial tool.