{"title":"使用垂直/水平耦合谐振器的3D时钟分布","authors":"Yasuhiro Take, N. Miura, H. Ishikuro, T. Kuroda","doi":"10.1109/ISSCC.2013.6487725","DOIUrl":null,"url":null,"abstract":"Clock distribution with low skew, low jitter, and low power for high-performance microprocessors is a significant design challenge. Although traditional H-tree clock distribution circuits are widely used, the clock skew of such circuits is increased by the PVT variations associated with device scaling [1]. In recent years, there has thus been a growing interest in resonant clock distribution schemes for reduced clock skew. In particular, coupled ring oscillators with shorted outputs [2] can reduce skew and jitter without additional layout area compared to LC resonators [3]. The difference in phase and frequency of each oscillator (due to PVT variations) is equalized by the mutual connection between the oscillators. Power dissipation can also be reduced, as the enhanced variability tolerance may permit operation at lower voltages.","PeriodicalId":6378,"journal":{"name":"2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers","volume":"1 1","pages":"258-259"},"PeriodicalIF":0.0000,"publicationDate":"2013-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":"{\"title\":\"3D clock distribution using vertically/horizontally-coupled resonators\",\"authors\":\"Yasuhiro Take, N. Miura, H. Ishikuro, T. Kuroda\",\"doi\":\"10.1109/ISSCC.2013.6487725\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Clock distribution with low skew, low jitter, and low power for high-performance microprocessors is a significant design challenge. Although traditional H-tree clock distribution circuits are widely used, the clock skew of such circuits is increased by the PVT variations associated with device scaling [1]. In recent years, there has thus been a growing interest in resonant clock distribution schemes for reduced clock skew. In particular, coupled ring oscillators with shorted outputs [2] can reduce skew and jitter without additional layout area compared to LC resonators [3]. The difference in phase and frequency of each oscillator (due to PVT variations) is equalized by the mutual connection between the oscillators. Power dissipation can also be reduced, as the enhanced variability tolerance may permit operation at lower voltages.\",\"PeriodicalId\":6378,\"journal\":{\"name\":\"2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers\",\"volume\":\"1 1\",\"pages\":\"258-259\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2013-03-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"9\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ISSCC.2013.6487725\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISSCC.2013.6487725","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
3D clock distribution using vertically/horizontally-coupled resonators
Clock distribution with low skew, low jitter, and low power for high-performance microprocessors is a significant design challenge. Although traditional H-tree clock distribution circuits are widely used, the clock skew of such circuits is increased by the PVT variations associated with device scaling [1]. In recent years, there has thus been a growing interest in resonant clock distribution schemes for reduced clock skew. In particular, coupled ring oscillators with shorted outputs [2] can reduce skew and jitter without additional layout area compared to LC resonators [3]. The difference in phase and frequency of each oscillator (due to PVT variations) is equalized by the mutual connection between the oscillators. Power dissipation can also be reduced, as the enhanced variability tolerance may permit operation at lower voltages.