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Proceedings. Tenth Annual IEEE International ASIC Conference and Exhibit (Cat. No.97TH8334)最新文献

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Data dependent precharging dynamic chain architecture for low power end high speed adders 基于数据的低功耗高速加法器预充动态链结构
W. Paik, In-Chul Hwang, Jae-Wan Kim, S. Kim
This paper presents a power efficient dynamic chain adder based on a Data Dependent Precharging (DDP) algorithm. It suppresses spurious transitions due to the unconditional precharging of outputs during the 'precharge' mode. A 64-bit adder has been designed using the DDP dynamic chain architecture. Simulation results confirm that it operates at 270 MHz with 0.105 mW/MHz power consumption at 3.3 V supply. It reduces power by 36% without speed degradation.
提出了一种基于数据相关预充算法的动态链加法器。它抑制了在“预充”模式下由于输出无条件预充而产生的虚假过渡。采用DDP动态链结构设计了64位加法器。仿真结果证实,在3.3 V电源下,其工作频率为270 MHz,功耗为0.105 mW/MHz。它在不降低速度的情况下减少了36%的功率。
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引用次数: 1
Low-voltage high-performance switched current memory cell 低电压高性能开关电流存储单元
A. Handkiewicz, P. Sniatala, M. Lukowiak
A new switched current (SI) memory cell is proposed in the paper. Analysis and simulations show very good properties of the cell. Layout of a sample and hold (SH) circuit composed of the memory cell is also presented. This SH circuit is a basic cell of bilinear integrators and delay lines, being components of one- and two-dimensional SI filters. The method and tools for automated design of such filters are briefly described.
本文提出了一种新的开关电流存储单元。分析和仿真结果表明,该电池具有良好的性能。并给出了由存储单元组成的采样保持电路的版图。该SH电路是双线性积分器和延迟线的基本单元,是一维和二维SI滤波器的组成部分。简要介绍了这种滤波器自动化设计的方法和工具。
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引用次数: 12
The power analysis of interconnect structures 互连结构的功率分析
Yan Zhang, W. Ye, R. Owens, M. J. Irwin
Interconnect structures play a more and more important role in low power computer design. Yet few investigations have been done in power analysis of interconnect structures. In this paper five designs of interconnect structures are implemented and a power analysis of interconnect structures that vary at the architecture level and gate level for different numbers of input ports is presented. The results based on these designs show that MUXes implemented with n-type pass transistors consume the least total power and set up power (power consumption in setting up the transmitting path). Crossbars consume the least transfer power (power consumption in transferring data). MUXes implemented with SPSD (Sympathetic Precharge Static Domino) gates have relatively lower delay especially for high fan-in interconnect structures. MUXes implemented with pass transistors have the lowest power-delay product for input ports numbers of 4, 8 and 16 while MUXes implemented with SPSD gates have the lowest power-delay product for interconnect structures which have 32 input ports.
互连结构在低功耗计算机设计中起着越来越重要的作用。然而,对互连结构的功率分析研究却很少。本文实现了五种互连结构的设计,并对不同输入端口数下互连结构在体系结构级和栅极级的功耗进行了分析。基于这些设计的结果表明,使用n型通路晶体管实现的mux消耗的总功率和设置功率(设置发射路径的功耗)最小。横梁的传输功率最小(传输数据的功耗)。用SPSD(交感预充静态多米诺)门实现的mux具有相对较低的延迟,特别是对于高扇入互连结构。使用通路晶体管实现的mux对于输入端口编号为4、8和16的mux具有最低的功率延迟积,而使用SPSD门实现的mux对于具有32个输入端口的互连结构具有最低的功率延迟积。
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引用次数: 4
An ultra-low-voltage MTCMOS/SIMOX gate array 一种超低电压MTCMOS/SIMOX栅极阵列
M. Urano, T. Douseki, T. Hatano, H. Fukuda, M. Harada, T. Tsuchiya
An ultra-low-voltage gate array has been developed using a multi-threshold CMOS (MTCMOS) circuit and separation by implanted oxygen (SIMOX) technology, which is a type of a silicon-on-insulator (SOI) technology. A 250-K basic-cell gate array was fabricated using 0.25-/spl mu/m MTCMOS/SIMOX technology. The gate delay time is 140 ps at 1.2 V and 470 ps at 0.5 V. A 30-KG test circuit was fabricated and the same operating speed as that of 0.5-/spl mu/m at 3.3 V (i.e., 25 MHz) was obtained at 0.58 V with the power consumption reduced to 1/100. At 0.76 V, the operating speed was 40 MHz.
采用多阈值CMOS (MTCMOS)电路和SIMOX分离技术(一种绝缘体上硅(SOI)技术)开发了一种超低电压门阵列。采用0.25-/spl μ m MTCMOS/SIMOX工艺制备了250k基元栅极阵列。栅极延迟时间在1.2 V时为140 ps,在0.5 V时为470 ps。制作了30kg的测试电路,在0.58 V下获得了与3.3 V(即25 MHz)下相同的工作速度0.5-/spl mu/m,功耗降低到1/100。在0.76 V时,工作速度为40 MHz。
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引用次数: 1
Design of cost-efficient ESD clamp circuits for the power rails of CMOS ASIC's with substrate-triggering technique 基于衬底触发技术的CMOS专用集成电路电源轨ESD钳位电路设计
M. Ker, Tung-Yang Chen, Chung-Yu Wu
Four new device structures for power-rail ESD clamp circuits by using the substrate-triggering technique are investigated in submicron CMOS technology to improve ESD level of the protection device within a smaller silicon area. Experimental results in a 0.6-/spl mu/m CMOS process have verified that the ESD clamp circuit with the double-BJT structure can provide 200% higher ESD robustness in per unit layout area as comparing to the previous design with the NMOS device.
在亚微米CMOS技术下,利用衬底触发技术研究了四种新的电源轨ESD钳位电路器件结构,以提高保护器件在更小的硅面积内的ESD水平。在0.6-/spl mu/m CMOS工艺中进行的实验结果验证了双bjt结构的ESD钳位电路在单位布局面积上的ESD稳健性比之前设计的NMOS器件高200%。
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引用次数: 13
An intrinsic area-array pad router for ICs 一种用于集成电路的内禀区域阵列pad路由器
C. Tan, D. Bouldin, P. Dehkordi
Arranging I/Os in a matrix array over the core circuitry of an IC generally provides 5-10 times more I/Os than the traditional method of restricting pads to the periphery. This approach also minimizes overall die size. In this paper we describe the development of a new area-array pad router which differs from other approaches in that no additional metal layer is added (unless needed) and no redistribution is required. We describe the design implementation of this technique and show the results of applying this router on designs requiring 112, 298, 414 and 485 I/Os.
在IC的核心电路上以矩阵阵列排列I/ o通常比将衬垫限制在外围的传统方法提供5-10倍的I/ o。这种方法也使整体模具尺寸最小化。在本文中,我们描述了一种新的区域阵列pad路由器的开发,它与其他方法的不同之处在于,它不需要添加额外的金属层(除非需要),也不需要重新分配。我们描述了该技术的设计实现,并展示了将该路由器应用于需要112、298、414和485个I/ o的设计的结果。
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引用次数: 10
TDD: a technology dependent decomposition algorithm for LUT-based FPGAs TDD:基于lut的fpga的技术相关分解算法
A. Farrahi, M. Sarrafzadeh
A major drawback of the previous algorithms that perform decomposition and covering for LUT-based FPGA technology mapping is the lack of a fast, and reasonably accurate evaluation scheme for the decomposition phase. In this paper, we will show how a fast covering algorithm can be used as an evaluation engine for the decomposition phase. We show that decomposition has a significant impact on the quality of the final mapping result. More specifically, we show that starting from the same circuit topology, a blind decomposition leads to mapping results that use an average of 70 to 150% more LUTs compared to the results obtained using a technology driven decomposition algorithm. A technology driven decomposition algorithm is developed based on the proposed idea. Experiments on a number of MCNC benchmark circuits show an average of 12% to 72% improvement on the number of LUTs compared to the previously reported results.
先前执行分解和覆盖基于lut的FPGA技术映射的算法的一个主要缺点是缺乏分解阶段的快速且合理准确的评估方案。在本文中,我们将展示如何使用快速覆盖算法作为分解阶段的评估引擎。我们表明,分解对最终映射结果的质量有显著的影响。更具体地说,我们表明,从相同的电路拓扑开始,与使用技术驱动的分解算法获得的结果相比,盲分解导致的映射结果平均使用70到150%的lut。在此基础上,提出了一种技术驱动的分解算法。在许多MCNC基准电路上的实验表明,与先前报道的结果相比,lut数量平均提高了12%至72%。
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引用次数: 1
ESD protection for CMOS ASIC in noisy environments with high-current low-voltage triggering SCR devices 具有大电流、低电压触发可控硅器件的CMOS ASIC在噪声环境中的ESD保护
M. Ker
A practical solution has been proposed to safely apply the LVTSCR (low-voltage-trigger SCR) device for output ESD (electrostatic discharge) protection in the advanced submicron CMOS ASIC's without being accidentally triggered on in the noisy operating environments. By increasing the trigger current of the LVTSCR device up to 200 mA, a noise margin greater than VDD+12V (VSS-12V) against the accidental triggering due to the overshooting (undershooting) noise pulses has been practically confirmed by the experimental results. Due to remaining a lower trigger voltage, this solution can still provide effective ESD protection for output transistors but only occupies a small layout area.
提出了一种实用的解决方案,在先进的亚微米CMOS专用集成电路中安全地应用LVTSCR(低压触发SCR)器件进行输出ESD(静电放电)保护,而不会在嘈杂的工作环境中被意外触发。通过将LVTSCR器件的触发电流提高到200 mA,实验结果实际证实了对过冲(欠冲)噪声脉冲引起的意外触发具有大于VDD+12V (VSS-12V)的噪声裕度。由于保持较低的触发电压,该解决方案仍然可以为输出晶体管提供有效的ESD保护,但只占用很小的布局面积。
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引用次数: 10
Input reordering for power and delay optimization 功率和延迟优化的输入重新排序
M. Hashimoto, H. Onoedera, K. Tamaru
It is known that input reordering of a gate affects the power dissipated by the internal capacitance of the reordered gate; this has been utilized for power reduction so far. We show that the reordering also has a significant effect on the power dissipation of the gate which drives the reordered gate. It is because the input capacitance depends on signal values of other inputs. We propose a reordering algorithm considering the power dissipation in the driving gate, the reordered gate and the gates driven by the reordered gate. Experimental results using 21 benchmark circuits show that our method reduces the power dissipation in all the circuits by 3.6% on average. There is a possibility that power dissipation is reduced by 17.2% maximum. In the case of delay and power optimization, our method reduces delay by 7.0% and power dissipation by 3.1% on average.
已知,栅极的输入重排序影响由重排序栅极的内部电容耗散的功率;到目前为止,这已被用于降低功率。结果表明,重排序对驱动重排序栅极的栅极功耗也有显著影响。这是因为输入电容取决于其他输入的信号值。我们提出了一种考虑驱动门、重排序门和由重排序门驱动的门的功耗的重排序算法。21个基准电路的实验结果表明,我们的方法使所有电路的功耗平均降低了3.6%。有可能使功耗最大降低17.2%。在延迟和功耗优化的情况下,我们的方法平均减少了7.0%的延迟和3.1%的功耗。
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引用次数: 1
ASIC design for monobit receiver 单比特接收机专用集成电路设计
D. Pok, C.-i.H. Chen, C. Montgomery, B. Tsui, J. Schamus
A design for the monobit receiver application specific integrated circuit (ASIC) is described. The monobit receiver is a wide band (1 GHz) digital receiver designed for electronic warfare applications. The receiver can process two simultaneous signals and has the potential for fabrication on a single multi-chip module (MCM). The receiver consists of three major elements: (1) a nonlinear radio frequency (RF) front-end, (2) a signal sampler and formatting system (analog-to-digital converter (ADC) and demultiplexers), and (3) a patented "monobit" algorithm implemented as an ASIC for signal detection and frequency measurement. The receiver's front end, ADC and algorithm experimental performance results will be presented. The receiver uses a two-bit ADC operating at 2.5 GHz whose outputs are collected and formatted by demultiplexers for presentation to the ASIC. The ASIC has two basic functions: (1) perform a fast Fourier transform (FFT) and (2) determine the number of signals and report their frequencies. The ASIC design contains five stages: (1) the input, (2) the FFT, (3) the initial sort, (4) the squaring and addition, and (5) the final sort. The chip will process the ADC outputs in real time, reporting detected signal frequencies every 102.4 ns.
介绍了单比特接收机专用集成电路(ASIC)的设计。单比特接收机是一种宽带(1ghz)数字接收机,设计用于电子战应用。该接收器可以同时处理两个信号,并且具有在单个多芯片模块(MCM)上制造的潜力。该接收器由三个主要部分组成:(1)非线性射频(RF)前端,(2)信号采样器和格式化系统(模数转换器(ADC)和解复用器),以及(3)作为信号检测和频率测量的ASIC实现的专利“单比特”算法。给出了接收机前端、ADC和算法的实验性能结果。接收器使用工作频率为2.5 GHz的2位ADC,其输出由解复用器收集并格式化,以呈现给ASIC。ASIC有两个基本功能:(1)执行快速傅立叶变换(FFT)和(2)确定信号的数量并报告其频率。ASIC设计包含五个阶段:(1)输入,(2)FFT,(3)初始排序,(4)平方和加法,(5)最终排序。芯片将实时处理ADC输出,每102.4 ns报告检测到的信号频率。
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引用次数: 2
期刊
Proceedings. Tenth Annual IEEE International ASIC Conference and Exhibit (Cat. No.97TH8334)
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