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Clock management in a Gigabit Ethernet physical layer transceiver circuit 千兆以太网物理层收发电路中的时钟管理
Proceedings Design, Automation and Test in Europe Conference and Exhibition Pub Date : 2004-02-16 DOI: 10.1109/DATE.2004.1269219
J. C. Diaz, Marta Saburit
{"title":"Clock management in a Gigabit Ethernet physical layer transceiver circuit","authors":"J. C. Diaz, Marta Saburit","doi":"10.1109/DATE.2004.1269219","DOIUrl":"https://doi.org/10.1109/DATE.2004.1269219","url":null,"abstract":"This paper describes the clock management of a mixed signal, high-speed, multi-clock, fully synchronous circuit. The MA1111A13 circuit clock distribution is a complicated structure that seamlessly incorporates different well-known techniques for power reduction, asynchronous clock domains inter-operability, and compatibility with different IO timing standards and data rates. This complex clocking scheme has been successfully integrated into the standard semi-custom physical design flow. The physical implementation of the clock network with synopsys astro is also presented.","PeriodicalId":335658,"journal":{"name":"Proceedings Design, Automation and Test in Europe Conference and Exhibition","volume":"05 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130645000","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}
引用次数: 2
Automatic synthesis and simulation of continuous-time /spl Sigma//spl Delta/ modulators 自动合成和模拟连续时间/spl Sigma//spl Delta/调制器
Proceedings Design, Automation and Test in Europe Conference and Exhibition Pub Date : 2004-02-16 DOI: 10.1109/DATE.2004.1268925
H. Aboushady, L. de Lamarre, N. Beilleau, M. Louerat
{"title":"Automatic synthesis and simulation of continuous-time /spl Sigma//spl Delta/ modulators","authors":"H. Aboushady, L. de Lamarre, N. Beilleau, M. Louerat","doi":"10.1109/DATE.2004.1268925","DOIUrl":"https://doi.org/10.1109/DATE.2004.1268925","url":null,"abstract":"This paper presents a mixed equation-based and simulation-based design methodology for continuous-time sigma-delta modulators from high level specifications down to layout. The calculation and scaling of the sigma-delta coefficients as well as circuit sizing and layout generation are implemented in the same analog design environment CAIRO+. The design of a complete third order current-mode continuous-time sigma-delta modulator is taken as an example to show the effectiveness of the proposed design methodology.","PeriodicalId":335658,"journal":{"name":"Proceedings Design, Automation and Test in Europe Conference and Exhibition","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128855684","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}
引用次数: 5
Extended subspace identification of improper linear systems 广义线性系统的扩展子空间辨识
Proceedings Design, Automation and Test in Europe Conference and Exhibition Pub Date : 2004-02-16 DOI: 10.1109/DATE.2004.1268888
G. Vandersteen, R. Pintelon, D. Linten, S. Donnay
{"title":"Extended subspace identification of improper linear systems","authors":"G. Vandersteen, R. Pintelon, D. Linten, S. Donnay","doi":"10.1109/DATE.2004.1268888","DOIUrl":"https://doi.org/10.1109/DATE.2004.1268888","url":null,"abstract":"The modeling of linear transfer functions is often required prior to the simulation of electronic systems. An example is the modeling of on-chip inductors starting from 2-port measurements. The modeling is often done using state-space models that can only represent proper systems. This leads to modeling problems in the case of improper systems such as in the case of 2-port modeling of the admittance matrix of an on-chip inductor. This paper first describes an extended state-space model to represent improper systems. Afterwards, the paper introduces an extension to classical frequency-domain subspace identification methods. The usefulness of both the extended state-space model and the extended subspace modeling technique are illustrated by comparing them with commercially available solutions. This includes a comparison on measurements of an on-chip inductor and on simulations of a coplanar waveguide.","PeriodicalId":335658,"journal":{"name":"Proceedings Design, Automation and Test in Europe Conference and Exhibition","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128041822","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}
引用次数: 2
A 2.7V 350/spl mu/W 11-b algorithmic analogue-to-digital converter with single-ended multiplexed inputs 具有单端多路输入的2.7V 350/spl mu/W 11-b算法模数转换器
Proceedings Design, Automation and Test in Europe Conference and Exhibition Pub Date : 2004-02-16 DOI: 10.1109/DATE.2004.1268830
A. Nagari, G. Nicollini
{"title":"A 2.7V 350/spl mu/W 11-b algorithmic analogue-to-digital converter with single-ended multiplexed inputs","authors":"A. Nagari, G. Nicollini","doi":"10.1109/DATE.2004.1268830","DOIUrl":"https://doi.org/10.1109/DATE.2004.1268830","url":null,"abstract":"A low-power low-area CMOS algorithmic A/D converter that does not require trimming nor digital calibration is presented. The topology is based on a classical cyclic A/D conversion using a capacitor ratio-independent computation circuitry. All the nonidealities have been carefully analyzed and reduced by proper choices of design and layout solutions. As a result the errors coming from opamp offset and finite open-loop dc gain, switch charge injection and clock feedthrough, parasitic capacitors, and intrinsic noise sources are reduced under the LSB level. To process a multiplexed (8 channels) single-ended analogue input, an efficient single-ended to fully differential circuit has been presented. The converter achieves 11 bit accuracy in the Nyquist band at a sampling rate of 8kSps. The total power dissipation is only 350/spl mu/W at 2.7V supply voltage. The active area is 0.3 mm/sup 2/ in a 0.35 /spl mu/m 5 metal levels CMOS technology with double-poly linear capacitors.","PeriodicalId":335658,"journal":{"name":"Proceedings Design, Automation and Test in Europe Conference and Exhibition","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127054450","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}
引用次数: 5
Bandwidth-constrained mapping of cores onto NoC architectures 带宽受限的内核映射到NoC架构
Proceedings Design, Automation and Test in Europe Conference and Exhibition Pub Date : 2004-02-16 DOI: 10.1109/DATE.2004.1269002
S. Murali, G. Micheli
{"title":"Bandwidth-constrained mapping of cores onto NoC architectures","authors":"S. Murali, G. Micheli","doi":"10.1109/DATE.2004.1269002","DOIUrl":"https://doi.org/10.1109/DATE.2004.1269002","url":null,"abstract":"We address the design of complex monolithic systems, where processing cores generate and consume a varying and large amount of data, thus bringing the communication links to the edge of congestion. Typical applications are in the area of multi-media processing. We consider a mesh-based networks on chip (NoC) architecture, and we explore the assignment of cores to mesh cross-points so that the traffic on links satisfies bandwidth constraints. A single-path deterministic routing between the cores places high bandwidth demands on the links. The bandwidth requirements can be significantly reduced by splitting the traffic between the cores across multiple paths. In this paper, we present NMAP, a fast algorithm that maps the cores onto a mesh NoC architecture under bandwidth constraints, minimizing the average communication delay. The NMAP algorithm is presented for both single minimum-path routing and split-traffic routing. The algorithm is applied to a benchmark DSP design and the resulting NoC is built and simulated at cycle accurate level in SystemC using macros from the /spl times/pipes library. Also, experiments with six video processing applications show significant savings in bandwidth and communication cost for NMAP algorithm when compared to existing algorithms.","PeriodicalId":335658,"journal":{"name":"Proceedings Design, Automation and Test in Europe Conference and Exhibition","volume":"241 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114466275","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}
引用次数: 737
An efficient on-chip network interface offering guaranteed services, shared-memory abstraction, and flexible network configuration 高效的片上网络接口，提供有保证的服务、共享内存抽象和灵活的网络配置
Proceedings Design, Automation and Test in Europe Conference and Exhibition Pub Date : 2004-02-16 DOI: 10.1109/DATE.2004.1268998
A. Radulescu, J. Dielissen, K. Goossens, E. Rijpkema, P. Wielage
{"title":"An efficient on-chip network interface offering guaranteed services, shared-memory abstraction, and flexible network configuration","authors":"A. Radulescu, J. Dielissen, K. Goossens, E. Rijpkema, P. Wielage","doi":"10.1109/DATE.2004.1268998","DOIUrl":"https://doi.org/10.1109/DATE.2004.1268998","url":null,"abstract":"In this paper we present a network interface for an on-chip network. Our network interface decouples computation from communication by offering a shared-memory abstraction, which is independent of the network implementation. We use a transaction-based protocol to achieve backward compatibility with existing bus protocols such as AXI, OCP and DTL. Our network interface has a modular architecture, which allows flexible instantiation. It provides both guaranteed and best-effort services via connections. These are configured via network interface ports using the network itself, instead of a separate control interconnect. An example instance of this network interface with 4 ports has an area of 0.143 mm/sup 2/ in a 0.13 /spl mu/m technology, and runs at 500 MHz.","PeriodicalId":335658,"journal":{"name":"Proceedings Design, Automation and Test in Europe Conference and Exhibition","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122782746","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}
引用次数: 148
Optimal algorithm for minimizing the number of twists in an on-chip bus 最小化片上总线扭曲数的最优算法
Proceedings Design, Automation and Test in Europe Conference and Exhibition Pub Date : 2004-02-16 DOI: 10.1109/DATE.2004.1269040
Liang Deng, Martin D. F. Wong
{"title":"Optimal algorithm for minimizing the number of twists in an on-chip bus","authors":"Liang Deng, Martin D. F. Wong","doi":"10.1109/DATE.2004.1269040","DOIUrl":"https://doi.org/10.1109/DATE.2004.1269040","url":null,"abstract":"Complementary bus architecture is used to achieve higher speed and lower power in VLSI chips. However, in deep submicron circuit design, the effects of crosstalk become more and more serious, especially in the bus structure where wires are placed close to each other. Complementary bus architecture with twisted wires can reduce the coupling noise. But in current chip design flow, engineering change order (ECO) happens commonly to meet improvement requirement. Layout changes due to ECO introduce obstacles to the twists, which could reduce the number of twists and increase the coupling noise. In this paper, an ECO algorithm for generating twisted complementary architecture is proposed based on the shortest path algorithm. Our algorithm guarantees to give the minimum number of twists along the bus wires under noise constraints. Experimental results show that the twist patterns generated by our algorithm can effectively reduce the capacitive coupling noises.","PeriodicalId":335658,"journal":{"name":"Proceedings Design, Automation and Test in Europe Conference and Exhibition","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126109696","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}
引用次数: 3
A generic RTOS model for real-time systems simulation with systemC 基于systemC的实时系统仿真通用RTOS模型
Proceedings Design, Automation and Test in Europe Conference and Exhibition Pub Date : 2004-02-16 DOI: 10.1109/DATE.2004.1269211
Rocco Le Moigne, O. Pasquier, J. P. Calvez
{"title":"A generic RTOS model for real-time systems simulation with systemC","authors":"Rocco Le Moigne, O. Pasquier, J. P. Calvez","doi":"10.1109/DATE.2004.1269211","DOIUrl":"https://doi.org/10.1109/DATE.2004.1269211","url":null,"abstract":"The main difficulties in designing real-time systems are related to time constraints: if an action is performed too late, it is considered as a fault (with different levels of criticism). Designers need to use a solution that fully supports timing constraints and enables them to simulate early on the design process a real-time system. One of the main difficulties in designing HW/SW systems resides in studying the effect of serializing tasks on processors running a real-time operating system (RTOS). In this paper, we present a generic model of RTOS based on systemC. It allows assessing real-time performances and the influence of scheduling according to RTOS properties such as scheduling policy, context-switch time and scheduling latency.","PeriodicalId":335658,"journal":{"name":"Proceedings Design, Automation and Test in Europe Conference and Exhibition","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122899059","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}
引用次数: 108
High-performance QuIDD-based simulation of quantum circuits 基于 QuIDD 的高性能量子电路仿真
Proceedings Design, Automation and Test in Europe Conference and Exhibition Pub Date : 2004-02-16 DOI: 10.1109/DATE.2004.1269084
George F. Viamontes, I. Markov, J. Hayes
{"title":"High-performance QuIDD-based simulation of quantum circuits","authors":"George F. Viamontes, I. Markov, J. Hayes","doi":"10.1109/DATE.2004.1269084","DOIUrl":"https://doi.org/10.1109/DATE.2004.1269084","url":null,"abstract":"Simulating quantum computation on a classical computer is a difficult problem. The matrices representing quantum gates, and vectors modeling qubit states grow exponentially with the number of qubits. It has been shown experimentally that the QuIDD (Quantum Information Decision Diagram) datastructure greatly facilitates simulations using memory and runtime that are polynomial in the number of qubits. In this paper, we present a complexity analysis which formally describes this class of matrices and vectors. We also present an improved implementation of QuIDDs which can simulate Grover's algorithm for quantum search with the asymptotic runtime complexity of an ideal quantum computer up to negligible overhead.","PeriodicalId":335658,"journal":{"name":"Proceedings Design, Automation and Test in Europe Conference and Exhibition","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127008422","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}
引用次数: 51
Energy-efficient design for highly associative instruction caches in next-generation embedded processors 下一代嵌入式处理器中高关联指令缓存的节能设计
Proceedings Design, Automation and Test in Europe Conference and Exhibition Pub Date : 2004-02-16 DOI: 10.1109/DATE.2004.1269095
Juan L. Aragón, D. Nicolaescu, A. Veidenbaum, A.-M. Badulescu
{"title":"Energy-efficient design for highly associative instruction caches in next-generation embedded processors","authors":"Juan L. Aragón, D. Nicolaescu, A. Veidenbaum, A.-M. Badulescu","doi":"10.1109/DATE.2004.1269095","DOIUrl":"https://doi.org/10.1109/DATE.2004.1269095","url":null,"abstract":"This paper proposes a low-energy solution for CAM-based highly associative I-caches using a segmented word-line and a predictor-based instruction fetch mechanism. Not all instructions in a given I-cache fetch are used due to branches. The proposed predictor determines which instructions in a cache access will be used and does not fetch any other instructions. Results show an average I-cache energy savings of 44% over the baseline case and 6% over the segmented case with no negative impact on performance.","PeriodicalId":335658,"journal":{"name":"Proceedings Design, Automation and Test in Europe Conference and Exhibition","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130139534","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}
引用次数: 2
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