Dynamically reconfigurable logic LSI: PCA-2

Hideyuki Ito, Ryusuke Konishi, Hiroshi Nakada, Hideyuki Tsuboi, Yuichi Okuyama, Akira Nagoya

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Design points and the results seen in the development of a dynamically reconfigurable logic LSI, PCA-2, are described. PCA-2 enables the realization of flexible parallel processing based on the autonomous reconfiguration of logic circuits. To realize this feature, we introduce an asynchronous circuit design and a homogeneous cell array structure. PCA-2 represents an advance on the earlier LSI, PCA-1. Cutting edge CMOS technology is used to realize the structural merits of PCA hardware. Compared to PCA-1, PCA-2 offers 16 times greater integration level for programmable logic. Due to miniaturization and design refinement, PCA-2 provides a 6-fold increase in the circuit frequency of the configuration controller and a 3-fold increase in the operating frequency of the programmable logic. The results gained confirm the effects of refinement and the suitability of our architecture for device miniaturization.

Original languageEnglish
Pages (from-to)2011-2020
Number of pages10
JournalIEICE Transactions on Information and Systems
Issue number8
Publication statusPublished - Aug 2004
Externally publishedYes


  • Asynchronous circuit
  • Autonomous reconfiguration
  • Dynamically reconfigurable hardware
  • Parallel computing

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Vision and Pattern Recognition
  • Electrical and Electronic Engineering
  • Artificial Intelligence


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