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2019 IEEE International Solid- State Circuits Conference - (ISSCC)最新文献

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2.6 A 2 ×30k-Spin Multichip Scalable Annealing Processor Based on a Processing-In-Memory Approach for Solving Large-Scale Combinatorial Optimization Problems 2.6 A 2 ×30k-Spin基于内存处理方法的多芯片可扩展退火处理器求解大规模组合优化问题
Pub Date : 2019-02-01 DOI: 10.1109/ISSCC.2019.8662517
Takashi Takemoto, Masato Hayashi, C. Yoshimura, M. Yamaoka
The last decade has seen impressive progress in the development of a new computer architecture, commonly known as annealing processor [1, 2]. An annealing processor provides a fast means for finding the ground state of an Ising model; thus, it can efficiently solve NP-hard combinatorial optimization problems [3]. In addition to quantum annealers based on superconducting circuits [1], annealing processors based on CMOS technology have received increased interest and are being developed on the basis of simulated annealing (SA) [2]. However, these CMOS annealing processors (CMOS-APs) have room for improvement, such as: i) expanding the bit widths of coefficients, and ii) increasing the number of spins handled by the processor. To address these challenges, a CMOS-AP based on the processing-in-memory approach (where CMOS circuits and an SRAM are tightly coupled [4]) has been developed. Its key features are threefold: a spin operator (processing local memory) which provides coefficients with expandable bit width and fast parallel spin updates according to the Gibbs distribution; a low-latency inter-chip interface (I/F) connecting two Ising chips, resulting in an increased number of spins; and a highly integrated spin circuit which directly connects the spin operator with the SRAM cell. Installed in a $2times30$ k spin system, the CMOS-AP demonstrates the capability for multi-chip operation with energy efficiency $1.75times10^{5}$ higher than running SA on a CPU.
在过去的十年中,一种新的计算机体系结构的发展取得了令人印象深刻的进展,通常被称为退火处理器[1,2]。退火处理器为寻找Ising模型的基态提供了一种快速方法;因此,它可以有效地解决NP-hard组合优化问题[3]。除了基于超导电路的量子退火炉[1]外,基于CMOS技术的退火处理器也受到越来越多的关注,并正在模拟退火(SA)的基础上发展[2]。然而,这些CMOS退火处理器(CMOS- aps)有改进的空间,例如:i)扩大系数的位宽度,ii)增加处理器处理的自旋次数。为了解决这些挑战,基于内存处理方法(其中CMOS电路和SRAM紧密耦合[4])的CMOS- ap已经开发出来。它的主要特征有三个:一个自旋算子(处理本地存储器),它提供具有可扩展位宽的系数和根据吉布斯分布的快速并行自旋更新;连接两个Ising芯片的低延迟芯片间接口(I/F),增加了自旋次数;以及高度集成的自旋电路,其将自旋操作符与SRAM单元直接连接。安装在$2times30$ k的旋转系统中,CMOS-AP显示了多芯片操作的能力,其能效比在CPU上运行SA高出$1.75times10^{5}$。
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引用次数: 2
An 879GOPS 243mW 80fps VGA Fully Visual CNN-SLAM Processor for Wide-Range Autonomous Exploration 用于大范围自主探索的879GOPS 243mW 80fps VGA全视觉CNN-SLAM处理器
Pub Date : 2019-02-01 DOI: 10.1109/ISSCC.2019.8662397
Ziyun Li, Yu Chen, Luyao Gong, Lu Liu, D. Sylvester, D. Blaauw, Hun-Seok Kim
Simultaneous localization and mapping (SLAM) estimates an agent’s trajectory for all six degrees of freedom (6 DoF) and constructs a 3D map of an unknown surrounding. It is a fundamental kernel that enables head-mounted augmented/virtual reality devices and autonomous navigation of micro aerial vehicles. A noticeable recent trend in visual SLAM is to apply computation- and memory-intensive convolutional neural networks (CNNs) that outperform traditional hand-designed feature-based methods [1]. For each video frame, CNN-extracted features are matched with stored keypoints to estimate the agent’s 6-DoF pose by solving a perspective-n-points (PnP) non-linear optimization problem (Fig. 7.3.1, left). The agent’s long-term trajectory over multiple frames is refined by a bundle adjustment process (BA, Fig. 7.3.1 right), which involves a large-scale ($sim$120 variables) non-linear optimization. Visual SLAM requires massive computation ($gt250$ GOP/s) in the CNN-based feature extraction and matching, as well as data-dependent dynamic memory access and control flow with high-precision operations, creating significant low-power design challenges. Software implementations are impractical, resulting in 0.2s runtime with a $sim$3 GHz CPU + GPU system with $gt100$ MB memory footprint and $gt100$ W power consumption. Prior ASICs have implemented either an incomplete SLAM system [2, 3] that lacks estimation of ego-motion or employed a simplified (non-CNN) feature extraction and tracking [2, 4, 5] that limits SLAM quality and range. A recent ASIC [5] augments visual SLAM with an off-chip high-precision inertial measurement unit (IMU), simplifying the computational complexity, but incurring additional power and cost overhead.
同时定位和映射(SLAM)估计代理的所有6个自由度(6 DoF)的轨迹,并构建未知环境的3D地图。它是实现头戴式增强/虚拟现实设备和微型飞行器自主导航的基本内核。视觉SLAM的一个值得注意的最新趋势是应用计算和内存密集型卷积神经网络(cnn),其优于传统的手工设计的基于特征的方法[1]。对于每个视频帧,cnn提取的特征与存储的关键点相匹配,通过求解一个视角-n点(PnP)非线性优化问题来估计智能体的6自由度姿态(图7.3.1,左)。智能体在多个帧上的长期轨迹通过束调整过程(BA,图7.3.1右)进行细化,该过程涉及大规模($sim$120变量)非线性优化。Visual SLAM在基于cnn的特征提取和匹配中需要大量的计算($gt250$ GOP/s),以及基于数据的动态内存访问和高精度操作的控制流,这给低功耗设计带来了重大挑战。软件实现不切实际,导致运行时间为0.2s, CPU + GPU系统为$ $ sim$ 3ghz,内存占用$ $ gt100$ MB,功耗$ $ gt100$ W。先前的asic要么实现了不完整的SLAM系统[2,3],缺乏对自我运动的估计,要么采用了简化的(非cnn)特征提取和跟踪[2,4,5],限制了SLAM的质量和范围。最近的ASIC[5]通过片外高精度惯性测量单元(IMU)增强了视觉SLAM,简化了计算复杂度,但产生了额外的功率和成本开销。
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引用次数: 35
ISSCC 2019 Technical Program Committee ISSCC 2019技术计划委员会
Pub Date : 2019-02-01 DOI: 10.1109/isscc.2019.8662399
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引用次数: 0
17.4 16MHz FRAM Micro-Controller with a Low-Cost Sub-1μA Embedded Piezo-Electric Strain Sensor for ULP Motion Detection 17.4 16MHz FRAM微控制器,低成本Sub-1μA嵌入式压电应变传感器,用于ULP运动检测
Pub Date : 2019-02-01 DOI: 10.1109/ISSCC.2019.8662391
Sudhanshu Khanna, M. Zwerg, Brian Elies, Juergen Luebbe, Nagaraj Krishnasawamy, Hadi Najar, Suman Bellary, Wei-Yan Shih, S. Summerfelt, Steven Bartling
Ultra-low Power Microcontrollers (MCUs) [1]–[4] have played a central role in embedded IoT systems providing programmability, analog and digital processing and control, A/D interfaces, and power management. As IoT applications expand, efficient sensing is increasingly becoming part of MCUs. In this paper we present a 130nm 16MHz Ferro-electric RAM (FRAM) based MCU with a sub-1uA embedded piezo-electric strain sensor and AFE for ULP motion detection (Fig. 17.4.1). To our knowledge, this is the first reported MCU with an embedded motion detection strain sensor. Existing applications that would benefit from such a MCU are applications like toys and remote controls that can turn off while not in use. Motion detection in a key fob improves security by preventing a “man in the middle” attack while the key fob lies stationary at home. Tamper detection and strain gauges are other potential applications. When used in “wake-on-motion” applications, the sensor IP is powered-on at all times waiting for a motion event. Hence minimizing its power consumption is crucial. Also, considering ULP MCUs have many cost-sensitive applications, the sensor must be small in area, and not require any additional masks or special processing steps. A single-chip solution allows reuse of power management, programmability and control circuits already existing in the MCU for use in the strain sensor IP, reducing the system level cost vs a 2-chip solution.
超低功耗微控制器(mcu)[1] -[4]在嵌入式物联网系统中发挥了核心作用,提供可编程性,模拟和数字处理和控制,a /D接口和电源管理。随着物联网应用的扩展,高效传感正日益成为mcu的一部分。在本文中,我们提出了一种基于130nm 16MHz铁电RAM (FRAM)的MCU,具有sub-1uA嵌入式压电应变传感器和用于ULP运动检测的AFE(图17.4.1)。据我们所知,这是第一个带有嵌入式运动检测应变传感器的MCU。现有的应用程序,将受益于这样的MCU是应用程序,如玩具和遥控器,可以关闭,而不使用。钥匙扣中的运动检测通过防止“中间人”攻击来提高安全性,而钥匙扣则固定在家中。篡改检测和应变计是其他潜在的应用。当用于“运动唤醒”应用程序时,传感器IP一直处于开机状态,等待运动事件。因此,最小化其功耗是至关重要的。此外,考虑到ULP mcu有许多对成本敏感的应用,传感器的面积必须小,并且不需要任何额外的掩模或特殊的处理步骤。单芯片解决方案允许重用MCU中已经存在的电源管理,可编程性和控制电路,用于应变传感器IP,与2芯片解决方案相比,降低了系统级成本。
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引用次数: 1
6.2 A 60Gb/s PAM-4 ADC-DSP Transceiver in 7nm CMOS with SNR-Based Adaptive Power Scaling Achieving 6.9pJ/b at 32dB Loss 6.2一个60Gb/s PAM-4 ADC-DSP收发器,7nm CMOS,基于信噪比的自适应功率缩放,在32dB损耗下实现6.9pJ/b
Pub Date : 2019-02-01 DOI: 10.1109/ISSCC.2019.8662322
Marc-Andre LaCroix, H.C.K. Wong, Yun Hua Liu, H. Ho, Semyon Lebedev, P. Krotnev, Dorin Alexandru Nicolescu, D. Petrov, Carlos Carvalho, Stephen Alie, Euhan Chong, F. A. Musa, D. Tonietto
With the introduction of PAM-4 signaling at 56Gb/s and the decreased benefits of CMOS scaling for high-speed mixed-signal designs, SerDes designers and system architects are faced with severe performance versus power budget constraints. Power management and energy efficiency have become the main drivers for system design. However, industry standards such as EEE have failed to keep up with efficiency demands. In this context the choice between a so-called analog mixed signal (AMS) SerDes architecture vs. an ADC-DSP-based one has been debated at length. AMS provides significantly lower maximum power [2, 4] while ADC-DSP provides higher link margin [1] thus avoiding expensive and power hungry repeater ICs that largely negate the power advantage of AMS SerDes in a system. AMS provides an easier and cheaper approach to implement multi-tap DFEs [3] compared to DSP where it is typically very expensive to implement more than a 1-tap DFE. This paper will show an ADC-DSP SerDes transceiver with a 2-tap DFE is capable of operating error-free over a 38dB link yet having an overall power budget similar to AMS. The same basic SerDes architecture is implemented (Fig. 6.2.1) with minor differences in 16nm and 7nm FinFET, however, power scaling is incorporated into the 7nm version only.
随着56Gb/s的PAM-4信号的引入以及高速混合信号设计中CMOS缩放优势的下降,SerDes设计人员和系统架构师面临着严重的性能与功耗预算限制。电源管理和能源效率已经成为系统设计的主要驱动力。然而,诸如EEE等行业标准未能跟上能效要求。在这种情况下,所谓的模拟混合信号(AMS) SerDes架构与基于adc - dsp的架构之间的选择已经进行了详细的讨论。AMS提供的最大功率明显较低[2,4],而ADC-DSP提供较高的链路余量[1],从而避免了昂贵且耗电的中继器ic,这些中继器ic在很大程度上抵消了系统中AMS SerDes的功率优势。与DSP相比,AMS提供了一种更简单、更便宜的方法来实现多抽头DFE [3], DSP通常非常昂贵地实现多个1抽头DFE。本文将展示具有2分路DFE的ADC-DSP SerDes收发器能够在38dB链路上无错误运行,但总体功耗预算与AMS相似。实现了相同的基本SerDes架构(图6.2.1),在16nm和7nm FinFET中存在微小差异,然而,功率缩放仅纳入7nm版本。
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引用次数: 28
17.5 A 0.8mm3 Ultrasonic Implantable Wireless Neural Recording System With Linear AM Backscattering 17.5线性调幅后向散射的0.8mm3超声植入式无线神经记录系统
Pub Date : 2019-02-01 DOI: 10.1109/ISSCC.2019.8662295
M. M. Ghanbari, David K. Piech, Konlin Shen, Sina Faraji Alamouti, Cem Yalcin, Benjamin C. Johnson, J. Carmena, M. Maharbiz, R. Muller
Miniaturization of implantable neural recording systems to micron-scale volumes will enable minimally invasive implantation and alleviate cortical scarring, gliosis, and resulting signal degradation. Ultrasound (US) power transmission has been demonstrated to have high efficiency and low tissue attenuation for mm-scale implants at depth in tissue [1, 2, 3], but has not been demonstrated with precision recording circuitry. We present an US implantable wireless neural recording system scaled to 0.8mm3, verified to safely operate at 5cm depth with state of the art neural recording performance an average circuit power dissipation of 13μW, and 28.8μW including power conversion efficiency. Sub-mm scale is achieved through single-link power and communication on a single piezocrystal (Lead Zirconate Titanate, PZT) utilizing linear analog backscattering, small die area, and eliminating all other off-chip components.
将植入式神经记录系统小型化到微米级的体积将使微创植入成为可能,减轻皮质瘢痕、神经胶质瘤和由此产生的信号退化。超声(US)功率传输已被证明在组织深处的mm级植入物中具有高效率和低组织衰减[1,2,3],但尚未被证明具有精确的记录电路。我们提出了一种美国植入式无线神经记录系统,该系统的尺寸为0.8mm3,经验证可在5cm深度下安全工作,其神经记录性能为平均电路功耗13μW,包括功率转换效率为28.8μW。亚毫米级是通过单个压电晶体(锆钛酸铅,PZT)上的单链路电源和通信实现的,利用线性模拟后向散射,小模具面积,消除所有其他片外组件。
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引用次数: 29
20.1 A 5GS/s 7.2 ENOB Time-Interleaved VCO-Based ADC Achieving 30.5fJ/conv-step 20.1 A 5GS/s 7.2 ENOB基于时间交错vco的ADC,实现30.5fJ/反步
Pub Date : 2019-02-01 DOI: 10.1109/ISSCC.2019.8662412
Maarten Baert, W. Dehaene
Technology scaling has been very beneficial for digital circuits both in terms of speed and power. Traditional analog techniques however are challenged by the ever-decreasing supply voltages. Highly digital VCO-based ADCs are able to benefit directly from improved digital performance [1]; however, the resolution and sampling rate of state-of-the-art VCO-based designs are insufficient for most applications. This paper presents a faster and more efficient VCO-based ADC architecture based on an improved high-speed, low-power ring oscillator and an asynchronous counting strategy. The architecture is 8× time-interleaved and combined with on-chip calibration. The design is implemented in 28nm CMOS and achieves 45.2dB SNDR (7.2 ENOB) near Nyquist at 5GS/s while consuming only 22.7mW, resulting in a Walden FOM of 30.5fJ/conv-step. The core area is only 0.023mm 2. These results demonstrate that VCO-based ADCs are a viable choice for next-generation Ethernet and high-speed wireless communication.
在速度和功率方面,技术缩放对数字电路非常有益。然而,传统的模拟技术受到不断降低的电源电压的挑战。高度数字化的基于vco的adc能够直接受益于数字性能的提高;然而,最先进的基于vco的设计的分辨率和采样率对于大多数应用来说是不够的。本文提出了一种基于改进的高速低功耗环形振荡器和异步计数策略的更快、更高效的基于vco的ADC架构。该架构是8倍时间交错的,并结合了片上校准。该设计在28nm CMOS上实现,在Nyquist附近以5GS/s的速度实现45.2dB SNDR (7.2 ENOB),而功耗仅为22.7mW,导致Walden FOM为30.5fJ/反步。核心面积仅为0.023mm 2。这些结果表明,基于vco的adc是下一代以太网和高速无线通信的可行选择。
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引用次数: 19
ISSCC 2019 Session 30 Overview: Advanced Wireline Techniques ISSCC 2019会议30概述:先进有线技术
Pub Date : 2019-02-01 DOI: 10.1109/isscc.2019.8662525
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引用次数: 0
ISSCC 2019 Session 10 Overview: Sensor Interfaces ISSCC 2019会议10概述:传感器接口
Pub Date : 2019-02-01 DOI: 10.1109/isscc.2019.8662487
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引用次数: 0
EE2: How to Save Lives with Circuits EE2:如何用电路拯救生命
Pub Date : 2019-02-01 DOI: 10.1109/isscc.2019.8662287
an aging population to reliable communications for first responders, circuits are at the heart of products that address pervasive challenges in our world. Circuit innovation can make our lives better, but to truly tap into the power of circuits, we need to make circuit-based technology accessible and easy to implement in designs. Doing so will empower inventors and entrepreneurs to explore new use cases and leverage technology across domain areas, extending and amplifying the impact of circuit-level innovation. The talk will include some career insights related to this topic. the talk will cover the use of multifunctional neural probes and non-invasive brain neuromodulation in neuroscience, where we are not just passively monitoring the brain, but stimulating the brain for interactive investigation. The workshop highlights circuits and their impact on healthcare-related industries. The goal of the panel is to provide perspectives from system architects, security experts and circuit designers on where we should be heading with the large amount of data that is being generated from more-advanced tests and increased monitoring of our current health status. Security and privacy problems with medical devices and IOT devices in general are in the news on an almost daily basis. One example from 2017 stated: “FDA issues recall of 465,000 pacemakers to patch security holes.” Once medical data is obtained reliably and securely, it is stored on remote servers and in remote databases where there are risks of leaks and data breaches of private medical records. However, it is difficult to put the genie back into the bottle! We have asked our distinguished panel to discuss how circuit designers can contribute to bolster our trust in medical devices and in electronic healthcare systems that manage private medical records. We also encourage the audience to propose attacks and countermeasures.
人口老龄化对第一响应者的可靠通信,电路是解决我们世界中普遍存在的挑战的产品的核心。电路创新可以使我们的生活更美好,但要真正利用电路的力量,我们需要使基于电路的技术易于使用,并易于在设计中实现。这样做将使发明家和企业家能够探索新的用例,并利用跨领域的技术,扩大和放大电路级创新的影响。该演讲将包括与此主题相关的一些职业见解。讲座将涵盖神经科学中多功能神经探针和非侵入性脑神经调节的使用,我们不仅仅是被动地监测大脑,而是刺激大脑进行互动研究。研讨会重点介绍了电路及其对医疗保健相关行业的影响。该小组的目标是提供来自系统架构师、安全专家和电路设计师的观点,让他们了解我们应该如何处理由更高级的测试产生的大量数据,并增加对我们当前健康状态的监控。医疗设备和物联网设备的安全和隐私问题几乎每天都会出现在新闻中。2017年的一个例子是:“FDA召回了46.5万个起搏器,以修补安全漏洞。”一旦可靠和安全地获得医疗数据,就将其存储在远程服务器和远程数据库中,在这些服务器和数据库中存在私人医疗记录泄露和数据泄露的风险。然而,要把精灵放回瓶子里是很难的!我们邀请了我们杰出的专家小组来讨论电路设计师如何能够增强我们对医疗设备和管理私人医疗记录的电子医疗系统的信任。我们也鼓励观众提出攻击和对策。
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引用次数: 0
期刊
2019 IEEE International Solid- State Circuits Conference - (ISSCC)
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