Fault-Tolerant FPGA: Architectures and Design for Programmable Logic Intellectual Property Core in SoC

Motoki AMAGASAKI  Qian ZHAO  Masahiro IIDA  Morihiro KUGA  Toshinori SUEYOSHI  

IEICE TRANSACTIONS on Information and Systems   Vol.E98-D   No.2   pp.252-261
Publication Date: 2015/02/01
Publicized: 2014/11/19
Online ISSN: 1745-1361
DOI: 10.1587/transinf.2014RCP0009
Type of Manuscript: Special Section PAPER (Special Section on Reconfigurable Systems)
Category: Architecture
fault tolerant,  FPGA,  IP-core,  

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In this paper, we propose fault-tolerant field-programmable gate array (FPGA) architectures and their design framework for intellectual property (IP) cores in system-on-chip (SoC). Unlike discrete FPGAs, in which the integration scale can be made relatively large, programmable IP cores must correspond to arrays of various sizes. The key features of our architectures are a regular tile structure, spare modules and bypass wires for fault avoidance, and a configuration mechanism for single-cycle reconfiguration. In addition, we utilize routing tools, namely EasyRouter for proposed architecture. This tool can handle various array sizes corresponding to developed programmable IP cores. In this evaluation, we compared the performances of conventional FPGAs and the proposed fault-tolerant FPGA architectures. On average, our architectures have less than 1.82 times the area and 1.11 times the delay compared with traditional island-style FPGAs. At the same time, our FPGA shows a higher fault tolerant performance.