{"title":"Current sensing completion detection in dual-rail asynchronous systems","authors":"L. Nagy, V. Stopjaková","doi":"10.1109/DDECS.2012.6219021","DOIUrl":"https://doi.org/10.1109/DDECS.2012.6219021","url":null,"abstract":"This paper addresses a novel methodology of detecting the completion of computation process of the combinatorial block in asynchronous systems. Logic gates fabricated in CMOS technology draw electrical current in several orders of magnitude higher during the signal transitions than in the idle state. This fact can be used to separate the idle state and the computing activity. The paper presents the fundamental background of the completion methodology, detailed explanation of the sensing circuitry operation, achieved simulation results as well as the comparison to state-of-the-art methods of completion detection.","PeriodicalId":131623,"journal":{"name":"2012 IEEE 15th International Symposium on Design and Diagnostics of Electronic Circuits & Systems (DDECS)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129708602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"VARMA—VARiability modelling and analysis tool","authors":"G. Russell, F. Burns, A. Yakovlev","doi":"10.1109/DDECS.2012.6219091","DOIUrl":"https://doi.org/10.1109/DDECS.2012.6219091","url":null,"abstract":"Process parameter variability in IC manufacturing has become an increasingly important issue as feature scaling descends further into the deep submicron region. Within industry the development of EDA tools associated with “process-aware-design” has a high priority as the impact on circuit performance due to process variations is having increasingly adverse effects on yield and performance. VARMA is a variability analysis tool which enables optimisation of both manufacturing process and nano-electronic circuit design in order to avoid `manufacturing surprises' resulting in costly chip respins, delays in reaching the market place and the subsequent loss of profitability.","PeriodicalId":131623,"journal":{"name":"2012 IEEE 15th International Symposium on Design and Diagnostics of Electronic Circuits & Systems (DDECS)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130867671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"NAND/NOR gate polymorphism in low temperature environment","authors":"R. Ruzicka, Václav Simek","doi":"10.1109/DDECS.2012.6219020","DOIUrl":"https://doi.org/10.1109/DDECS.2012.6219020","url":null,"abstract":"The fundamental aspect behind this paper is focused on behaviour of polymorphic digital circuits in potentially harsh operating environment. The area of polymorphic electronics takes and an advantage of inherently built-in features that open up the possibility for on-the-fly adjustment of a particular circuit function with respect to the environment. The most prevalent benefit here is connected with the fact that space-efficient circuit implementation can be achieved due to the adoption of polymorphic principles and, thus, eliminate the need for an additional function change controller. The experimental setup was based around reconfigurable polymorphic chip REPOMO32, which is primarily designed to be configured (in addition to the configuration bit stream) by means of using the level of power supply voltage (Vdd), and carrier board with all necessary capabilities for temperature measurement up to -40C boundary and its response analysis. Experiments clearly indicate that polymorphic gates in the chip can be easily controlled not only by Vdd, but also by temperature. The obtained results also prove that the physical design of the REPOMO32 chip is robust enough under wide range f operating temperature.","PeriodicalId":131623,"journal":{"name":"2012 IEEE 15th International Symposium on Design and Diagnostics of Electronic Circuits & Systems (DDECS)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122117207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Improving the iterative power of resynthesis","authors":"P. Fiser, Jan Schmidt","doi":"10.1109/DDECS.2012.6219019","DOIUrl":"https://doi.org/10.1109/DDECS.2012.6219019","url":null,"abstract":"We present a method of improving the iterative power of resynthesis of Boolean networks in this paper. In principle it is based on iterative resynthesis of parts of the network, instead of processing the network as a whole. The parts are randomly selected, thus more variability is introduced. The process is scalable, at least as much as the state-of-the-art. We show that our method performs better than the academic state-of-the-art, the ABC tool from Berkeley. This is documented by extensive experiments on LGSynth'93 benchmark circuits.","PeriodicalId":131623,"journal":{"name":"2012 IEEE 15th International Symposium on Design and Diagnostics of Electronic Circuits & Systems (DDECS)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122530173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Reconfigurable time interval measurement circuit incorporating a programmable gain time difference amplifier","authors":"A. Alahmadi, G. Russell, A. Yakovlev","doi":"10.1109/DDECS.2012.6219089","DOIUrl":"https://doi.org/10.1109/DDECS.2012.6219089","url":null,"abstract":"Time interval measurement (TIM) is used in a wide range of applications, for example, physics experiments, dynamic testing of integrated circuits (IC), telecommunications, laser distance measurement, X-ray and UV imagers etc., requiring a range of measurement accuracy and resolution. In this work, a reconfigurable TIM is designed with an adjustable resolution range of 15 down to 0.5 ps and a measurement dynamic range of 480 to 16 ps to perform a variety of time related measurements which require different test specifications; such as set-up and hold time and jitter measurements. It is considered that a reconfigurable measurement system will occupy less chip area than a range of measurement circuits designed for one specific test. The reconfigurable TIM consists of two parts, a programmable time difference amplifier and 32 cells tapped delay line. The proposed programmable time difference amplifier is designed to have a variable gain ranging from 4 to 117 with a very wide dynamic input range.","PeriodicalId":131623,"journal":{"name":"2012 IEEE 15th International Symposium on Design and Diagnostics of Electronic Circuits & Systems (DDECS)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115033766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Power constraint testing for multi-clock domain SoCs using concurrent hybrid BIST","authors":"M. Haghbayan, S. Safari, Z. Navabi","doi":"10.1109/DDECS.2012.6219022","DOIUrl":"https://doi.org/10.1109/DDECS.2012.6219022","url":null,"abstract":"This paper presents a novel approach for selecting optimal pseudo random and deterministic test patterns and minimizing test time for multi-clock domain SoCs based on a hybrid BIST architecture for each core. For test scheduling, a concurrent method considering peak power upper bound is used. A test scheduling graph is presented for modeling concurrent hybrid BIST test scheduling. Furthermore, a heuristic is proposed for selecting cores to be tested concurrently and the order of applying sequence of test patterns to each core. Experimental results show that the proposed heuristics for both selecting groups of cores to be tested concurrently during the SoC test process, and determining the amount of deterministic and pseudo random test patterns for each core, give us an optimized method for multi clock domain SoC testing compared with the existing methods.","PeriodicalId":131623,"journal":{"name":"2012 IEEE 15th International Symposium on Design and Diagnostics of Electronic Circuits & Systems (DDECS)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126545587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xiang Zheng, Ming Liu, Hong Chen, Huamin Cao, Cong Wang, Zhiqiang Gao
{"title":"A 512 kb SRAM in 65nm CMOS with divided bitline and novel two-stage sensing technique","authors":"Xiang Zheng, Ming Liu, Hong Chen, Huamin Cao, Cong Wang, Zhiqiang Gao","doi":"10.1109/DDECS.2012.6219052","DOIUrl":"https://doi.org/10.1109/DDECS.2012.6219052","url":null,"abstract":"This paper focuses on high speed embedded SRAM design, especially on novel circuit technique to improve SRAM access time. A new two-stage sensing scheme which is able to reduce long interconnection metal line delay by transferring differential signals with half swing amplitude has been proposed. Post-layout simulation results show that the long distance signal transmission time has been decreased by 45%. Chip measurement shows the access time has been decreased by 23% at the expense of little area penalty (1.3%) and some read power penalty (about 16%) mainly caused by 2nd-stage sense amplifiers.","PeriodicalId":131623,"journal":{"name":"2012 IEEE 15th International Symposium on Design and Diagnostics of Electronic Circuits & Systems (DDECS)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132736142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Andreas Mauderer, M. Freier, Jan-Hendrik Oetjens, W. Rosenstiel
{"title":"Efficient digital design for automotive mixed-signal ASICs using simulink","authors":"Andreas Mauderer, M. Freier, Jan-Hendrik Oetjens, W. Rosenstiel","doi":"10.1109/DDECS.2012.6219090","DOIUrl":"https://doi.org/10.1109/DDECS.2012.6219090","url":null,"abstract":"In common design flows of mixed-signal ASICs, the transition from system-level models to implementation-level models is executed in a manual process that carries potential for an efficiency gain by automation. This contribution addresses this aspect by showing and discussing an approach for efficient automated transitions from digital parts of Simulink models representing heterogeneous systems to VHDL and Verilog descriptions. It describes a design flow, in which a Simulink model representing a digital part of a mixed-signal ASIC is checked and optimized for automated generation of design rule compliant and more efficient digital hardware implementations. For this purpose, modeling guidelines and optimizations were implemented and integrated into an easily usable graphical user interface. Thereby, the strategy is based on considering and optimizing the digital part with respect to the surrounding heterogeneous system. An evaluation of the presented design flow is shown by applying the flow to an automotive hardware design.","PeriodicalId":131623,"journal":{"name":"2012 IEEE 15th International Symposium on Design and Diagnostics of Electronic Circuits & Systems (DDECS)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116808338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Application of IDDT test towards increasing SRAM reliability in nanometer technologies","authors":"G. Gyepes, D. Arbet, J. Brenkus, V. Stopjaková","doi":"10.1109/DDECS.2012.6219046","DOIUrl":"https://doi.org/10.1109/DDECS.2012.6219046","url":null,"abstract":"Dynamic supply current test method (IDDT test) in static random access memory (SRAM) cell arrays is addressed in order to unveil weak open defects. Simulations were carried out on a 64-bit SRAM circuit, where several parameters of the IDDT waveform were monitored. The SRAM circuit was designed in a 90 nm CMOS technology. Efficiency of IDDT test in unveiling open defects was evaluated and the achieved results were compared for four SRAM arrays with cells of different cell ratio (CR). Moreover, a solution for transformation of the dynamic current to voltage is presented. After the transformation of the current waveform to a voltage waveform, the parameters of the voltage waveform similar to those of the current waveform are easily monitored and evaluated.","PeriodicalId":131623,"journal":{"name":"2012 IEEE 15th International Symposium on Design and Diagnostics of Electronic Circuits & Systems (DDECS)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127472308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effective RT-level software-based self-testing of embedded processor cores","authors":"P. Kabiri, Z. Navabi","doi":"10.1109/DDECS.2012.6219059","DOIUrl":"https://doi.org/10.1109/DDECS.2012.6219059","url":null,"abstract":"Embedded processors are often used in systems that are both safety-critical and long-living. Therefore testing of these devices is critical not only after production, but also in the field. Due to the limited accessibility of embedded processors, testing of such systems is a major challenge in terms of ultra-deep submicron issues. Scan based testing methods cannot be applied to embedded processor cores which cannot be modified to meet the design requirements for scan insertion. From the other side, generating test vectors for these high gate count devices is a major task. This paper presents a high level, component-oriented software-based self-testing method which achieves a high stuck-at-fault coverage for an embedded processor core. The method requires no DFT or changing the processor architecture. The proposed method is high level in the sense that it is based on the knowledge of the Instruction Set Architecture (ISA) and Register Transfer Level (RTL) description of the processor. The method is well suited for meeting the challenges of testing SoCs which contain embedded processor cores. Our methodology is superior in terms of test quality in such a way that significantly increases fault coverage and reduces test time. The proposed method outperforms all existing method in terms of fault coverage.","PeriodicalId":131623,"journal":{"name":"2012 IEEE 15th International Symposium on Design and Diagnostics of Electronic Circuits & Systems (DDECS)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122379295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}