{"title":"用于RSFQ位并行处理器的32位无时钟门ALU","authors":"T. Kawaguchi, N. Takagi","doi":"10.1587/transele.2021sep0005","DOIUrl":null,"url":null,"abstract":"SUMMARY A 32-bit arithmetic logic unit (ALU) is designed for a rapid single flux quantum (RSFQ) bit-parallel processor. In the ALU, clocked gates are partially replaced by clockless gates. This reduces the number of D flip flops (DFFs) required for path balancing. The number of clocked gates, including DFFs, is reduced by approximately 40 %, and size of the clock distribution network is reduced. The number of pipeline stages becomes modest. The layout design of the ALU and simulation results show the e ff ectiveness of using clockless gates in wide datapath circuits.","PeriodicalId":13259,"journal":{"name":"IEICE Trans. Electron.","volume":"25 1","pages":"245-250"},"PeriodicalIF":0.0000,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"32-Bit ALU with Clockless Gates for RSFQ Bit-Parallel Processor\",\"authors\":\"T. Kawaguchi, N. Takagi\",\"doi\":\"10.1587/transele.2021sep0005\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"SUMMARY A 32-bit arithmetic logic unit (ALU) is designed for a rapid single flux quantum (RSFQ) bit-parallel processor. In the ALU, clocked gates are partially replaced by clockless gates. This reduces the number of D flip flops (DFFs) required for path balancing. The number of clocked gates, including DFFs, is reduced by approximately 40 %, and size of the clock distribution network is reduced. The number of pipeline stages becomes modest. The layout design of the ALU and simulation results show the e ff ectiveness of using clockless gates in wide datapath circuits.\",\"PeriodicalId\":13259,\"journal\":{\"name\":\"IEICE Trans. Electron.\",\"volume\":\"25 1\",\"pages\":\"245-250\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2022-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEICE Trans. Electron.\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1587/transele.2021sep0005\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEICE Trans. Electron.","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1587/transele.2021sep0005","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
32-Bit ALU with Clockless Gates for RSFQ Bit-Parallel Processor
SUMMARY A 32-bit arithmetic logic unit (ALU) is designed for a rapid single flux quantum (RSFQ) bit-parallel processor. In the ALU, clocked gates are partially replaced by clockless gates. This reduces the number of D flip flops (DFFs) required for path balancing. The number of clocked gates, including DFFs, is reduced by approximately 40 %, and size of the clock distribution network is reduced. The number of pipeline stages becomes modest. The layout design of the ALU and simulation results show the e ff ectiveness of using clockless gates in wide datapath circuits.