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Based on handshaking protocols, asynchronous NoC does not have global clock tree distribution, which results in a natural power saving mode without any explicit clock gating. However, the faults occurring in such asynchronous networks will seriously affect their performances. In this paper, we propose AFTER, an Asynchronous Fault-TolErant Router, which uses the quasi delay insensitive (QDI) logic. The proposed router is able to detect the faults of ports and links. Then, a fault-tolerant routing mechanism, based on the port priority in different quadrants, is proposed to maximize the number of packets that can be transmitted via the shortest paths. In this way, the fault-tolerance of asynchronous routers can be achieved. Besides that, AFTER could also achieve high scalability, and is suitable for the large scale globally asynchronous locally synchronous (GALS) system. The experimental results show that, when faults occur in the network, AFTER has a better fault-tolerance performance than the reference. <\/jats:p>","DOI":"10.1142\/s021812661650050x","type":"journal-article","created":{"date-parts":[[2016,1,18]],"date-time":"2016-01-18T06:46:42Z","timestamp":1453099602000},"page":"1650050","source":"Crossref","is-referenced-by-count":4,"title":["AFTER: Asynchronous Fault-Tolerant Router Design in Network-on-Chip"],"prefix":"10.1142","volume":"25","author":[{"given":"Yiming","family":"Ouyang","sequence":"first","affiliation":[{"name":"School of Computer and Information, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qi","family":"Chen","sequence":"additional","affiliation":[{"name":"School of Computer and Information, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiumin","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Computer and Information, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaoye","family":"Ouyang","sequence":"additional","affiliation":[{"name":"School of Computer and Information, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Huaguo","family":"Liang","sequence":"additional","affiliation":[{"name":"School of Electronic Science &amp; Applied Physics, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gaoming","family":"Du","sequence":"additional","affiliation":[{"name":"School of Electronic Science &amp; Applied Physics, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"219","published-online":{"date-parts":[[2016,3,31]]},"reference":[{"key":"S021812661650050XBIB002","doi-asserted-by":"publisher","DOI":"10.1109\/2.976921"},{"key":"S021812661650050XBIB003","doi-asserted-by":"publisher","DOI":"10.1109\/TVLSI.2013.2268548"},{"key":"S021812661650050XBIB008","doi-asserted-by":"publisher","DOI":"10.1145\/1132952.1132953"},{"key":"S021812661650050XBIB009","doi-asserted-by":"publisher","DOI":"10.1109\/MM.2002.1044296"},{"key":"S021812661650050XBIB010","first-page":"699","volume":"24","author":"Wei S.","year":"2012","journal-title":"J. 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