{"title":"一种用于手持式三维图形系统的210MHz 15mW统一矢量与超越函数单元","authors":"Byeong-Gyu Nam, Hyejung Kim, H. Yoo","doi":"10.1109/ASSCC.2006.357860","DOIUrl":null,"url":null,"abstract":"A low-power, area-efficient 4-way 32-bit unified vector and transcendental function unit has been developed for programmable shaders for handheld 3-D graphics systems. It adopts the logarithmic number system (LNS) at the arithmetic core for the small-size, low-power unification and single cycle throughput with maximum 4-cycle latency of various vector and transcendental functions. A novel logarithmic conversion scheme is proposed with 0.41% of maximum conversion error. A test chip is implemented by 0.18-mum CMOS technology with 91 K gates. It operates at 210 MHz and consumes 15 mW at 1.8 V.","PeriodicalId":142478,"journal":{"name":"2006 IEEE Asian Solid-State Circuits Conference","volume":"50 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2006-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"A 210MHz 15mW Unified Vector and Transcendental Function Unit for Handield 3-D Graphics Systems\",\"authors\":\"Byeong-Gyu Nam, Hyejung Kim, H. Yoo\",\"doi\":\"10.1109/ASSCC.2006.357860\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A low-power, area-efficient 4-way 32-bit unified vector and transcendental function unit has been developed for programmable shaders for handheld 3-D graphics systems. It adopts the logarithmic number system (LNS) at the arithmetic core for the small-size, low-power unification and single cycle throughput with maximum 4-cycle latency of various vector and transcendental functions. A novel logarithmic conversion scheme is proposed with 0.41% of maximum conversion error. A test chip is implemented by 0.18-mum CMOS technology with 91 K gates. It operates at 210 MHz and consumes 15 mW at 1.8 V.\",\"PeriodicalId\":142478,\"journal\":{\"name\":\"2006 IEEE Asian Solid-State Circuits Conference\",\"volume\":\"50 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2006-11-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2006 IEEE Asian Solid-State Circuits Conference\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ASSCC.2006.357860\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2006 IEEE Asian Solid-State Circuits Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ASSCC.2006.357860","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
摘要
为手持式三维图形系统的可编程着色器开发了一种低功耗、面积高效的4路32位统一矢量和超越功能单元。算法核心采用对数系统(LNS)，实现了各种矢量和超越函数的小体积、低功耗统一和单周期吞吐量，最大4周期时延。提出了一种新的对数转换方案，最大转换误差为0.41%。采用0.18 μ m CMOS技术和91 K栅极实现了测试芯片。它的工作频率为210兆赫，功耗为15兆瓦，电压为1.8伏。
A 210MHz 15mW Unified Vector and Transcendental Function Unit for Handield 3-D Graphics Systems
A low-power, area-efficient 4-way 32-bit unified vector and transcendental function unit has been developed for programmable shaders for handheld 3-D graphics systems. It adopts the logarithmic number system (LNS) at the arithmetic core for the small-size, low-power unification and single cycle throughput with maximum 4-cycle latency of various vector and transcendental functions. A novel logarithmic conversion scheme is proposed with 0.41% of maximum conversion error. A test chip is implemented by 0.18-mum CMOS technology with 91 K gates. It operates at 210 MHz and consumes 15 mW at 1.8 V.
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