Application specific low power hybrid FPGA architecture design

Ali Akoglu, Aravind Dasu, Sethuraman Panchanathan

Research output: Contribution to journalConference articlepeer-review


Increasing demand for configuration time aware processing with stringent constraints for flexibility necessitates the design and development of a dynamically fast reconfigurable processor. This research work presents results obtained from hybrid FPGA architecture design methodology proposed in earlier work. Hybrid architecture is formed of ASIC units and LUT based processing elements. ASIC units represent tasks or core clusters obtained through common sub-graph analysis between basic blocks within and across routines of computation intensive applications and are basically recurring patterns. Results show that partial reconfiguration with the use of computation cores embedded in a sea of LUTs offer potential for massive savings in gate density by eliminating the need for redundant sub-circuit pattern configurations. Since ASICs cover only parts of data flow graphs, remaining computations are implemented on LUT based reconfigurable hardware. A new packing algorithm is proposed to form LUT based processing elements. Packing cost function prioritizes reduction of input/output pins of the clusters being formed. Results show that significant savings in number of nets to be routed are obtained through proposed method.

Original languageEnglish (US)
Article number03
Pages (from-to)21-31
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2005
EventProceedings of SPIE-IS and T Electronic Imaging - Embedded Processors for Multimedia and Communications II - San Jose, CA, United States
Duration: Jan 17 2005Jan 18 2005


  • FPGA
  • Hybrid
  • Packing
  • Reconfigurable architecture

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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