Selected Crosstalk Avoidance Code for Reliable Network-on-Chip  

作　　者：张颖 李华伟 李晓维 

机构地区：[1]Key Laboratory of Computer System and Architecture, Institute of Computing Technology, Chinese Academy of Sciences [2]Graduate School of the Chinese Academy of Sciences

出　　处：《Journal of Computer Science & Technology》2009年第6期1074-1085,共12页计算机科学技术学报（英文版）

基　　金：supported in part by the National Natural Science Foundation of China (NSFC) under Grant Nos. 60606008,60633060, and 60776031;the National Basic Research 973 Program of China under Grant No. 2005CB321604;the National High Technology Research and Development 863 Program of China under Grant Nos. 2007AA01Z476, 2007AA01Z109 and 2007AA01Z113;Co-Building Program of Beijing Municipal Education Commission

摘　　要：With the shrink of the technology into nanometer scale, network-on-chip （NOC） has become a reasonable solution for connecting plenty of IP blocks on a single chip. But it suffers from both crosstalk effects and single event upset （SEU）, especially crosstalk-induced delay, which may constrain the overall performance of NOC. In this paper, we introduce a reliable NOC design using a code with the capability of both crosstalk avoidance and single error correction. Such a code, named selected crosstalk avoidance code （SCAC） in our previous work, joins crosstalk avoidance code （CAC） and error correction code （ECC） together through codeword selection from an original CAC codeword set. It can handle possible error caused by either crosstalk effects or SEU. When designing a reliable NOC, data are encoded to SCAC codewords and can be transmitted rapidly and reliably across NOC. Experimental results show that the NOC design with SCAC achieves higher performance and is reliable to tolerate single errors. Compared with previous crosstalk avoidance methods, SCAC reduces wire overhead, power dissipation and the total delay. When SCAC is used in NOC, it can save 20% area overhead and reduce 49% power dissipation.With the shrink of the technology into nanometer scale, network-on-chip （NOC） has become a reasonable solution for connecting plenty of IP blocks on a single chip. But it suffers from both crosstalk effects and single event upset （SEU）, especially crosstalk-induced delay, which may constrain the overall performance of NOC. In this paper, we introduce a reliable NOC design using a code with the capability of both crosstalk avoidance and single error correction. Such a code, named selected crosstalk avoidance code （SCAC） in our previous work, joins crosstalk avoidance code （CAC） and error correction code （ECC） together through codeword selection from an original CAC codeword set. It can handle possible error caused by either crosstalk effects or SEU. When designing a reliable NOC, data are encoded to SCAC codewords and can be transmitted rapidly and reliably across NOC. Experimental results show that the NOC design with SCAC achieves higher performance and is reliable to tolerate single errors. Compared with previous crosstalk avoidance methods, SCAC reduces wire overhead, power dissipation and the total delay. When SCAC is used in NOC, it can save 20% area overhead and reduce 49% power dissipation.

关 键 词：crosstalk avoidance codeword selection reliable network-on-chip single event upset 

分 类 号：TN47[电子电信—微电子学与固体电子学]