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Book Design and Modeling of High speed Clock and Data Recovery Circuits

Download or read book Design and Modeling of High speed Clock and Data Recovery Circuits written by Jri Lee and published by . This book was released on 2003 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Design and Modeling of a Clock Data Recovery CDR Circuit

Download or read book Design and Modeling of a Clock Data Recovery CDR Circuit written by Zainab binti Mohamad Ashari and published by . This book was released on 2013 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clock data recovery (CDR) circuits are in high demand due to development in communication technology such as improvements in transmit/receive processing and GHz transfer bandwidths via wired and wireless media. Large bandwidth data with high transfer rates encounter several major problems at the reception. Electrical signals are easily distorted with large bandwidth data when transmitted at high speeds. Existence of noise will cause disturbance or undesired signals at the output of the system. Minimizing the effects of jitter in CDR system is important to protect the signal from disturbance and to maintain low phase noise. A 5 Gbps clock data recovery circuit using PLL approach is proposed in this work. Hardware Description language, Verilog-AMS has been implemented as a modeling language for CDR using SMASH Dolphin Integrated software. The architecture of the proposed PLL CDR circuits incorporates a phase detector, RLC low-pass filter, voltage-controlled oscillator, and divider. Evaluation of the CDR performance is based on the design, frequency, transfer rate, supply voltage, and phase noise. The proposed circuit has a simple configuration powered using low supply of 1.0 V and operates in high speed of 5 Gbps. The phase noise performance is measure using four different offsets. Less phase noise of -130.29 dBc/Hz is generated without jitter added on it. To simulate jitter from 1 MHz to 100 GHz a pulse is added in each block of the CDR circuit and the circuit's performance is evaluated. CDR with jitter from 10 GHz up to 100 GHz at VCO produces the highest phase noise at the output port of -125.10 dBc/Hz. The PLL-based CDR circuit is affected when jitter pulses is added at the VCO. The proposed PLL-based CDR circuit is suitable for PCIe application with 5 Gbps transfer rate, low supply voltage, and has low phase noise.

Book Monolithic Phase Locked Loops and Clock Recovery Circuits

Download or read book Monolithic Phase Locked Loops and Clock Recovery Circuits written by Behzad Razavi and published by John Wiley & Sons. This book was released on 1996-04-18 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: Featuring an extensive 40 page tutorial introduction, this carefully compiled anthology of 65 of the most important papers on phase-locked loops and clock recovery circuits brings you comprehensive coverage of the field-all in one self-contained volume. You'll gain an understanding of the analysis, design, simulation, and implementation of phase-locked loops and clock recovery circuits in CMOS and bipolar technologies along with valuable insights into the issues and trade-offs associated with phase locked systems for high speed, low power, and low noise.

Book Performance Analysis for Clock and Data Recovery Circuits Under Process Variation

Download or read book Performance Analysis for Clock and Data Recovery Circuits Under Process Variation written by and published by . This book was released on 2007 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clock and data recovery circuits play a very important role in modern data communication systems. It has very wide application in many areas, such as optical communications and interconnection between chips [1]. Today in IC industry, the shrinkage of feature size increasingly enlarges the uncertainty of circuit performance caused by process variation. As the data transmission speed dramatically increases, this uncertainty will heavily affect the clock and data recovery circuit performance and reliability in communication systems. Thus, research on performance variation of a clock and data recovery circuit caused by process variation is meaningful. The conclusion will have significant influence on chip testing. In this research, a clock and data recovery circuit is laid out by TSMC 180nm technology. The performance variation caused by process variation is investigated by HSPICE simulation, and compared with the theoretical analysis results derived through the mathematical model of the clock and data recovery circuit. The results demonstrate that our theoretical model matches well with the real simulations. Both theoretical and simulation results also indicate that process variations in the low pass filter have significant impact on performance parameters such as damping ratio, natural frequency, and lock time of the clock and data recovery circuit. Reference 1. B. Razavi, Challenges in the design high-speed clock and data recovery circuits, IEEE Communications Magazine, vol. 40, no. 8, pp. 94- 101, Aug. 2002.

Book High Speed Clock Network Design

Download or read book High Speed Clock Network Design written by Qing K. Zhu and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-Speed Clock Network Design is a collection of design concepts, techniques and research works from the author for clock distribution in microprocessors and high-performance chips. It is organized in 11 chapters.

Book High Speed Clock and Data Recovery Analysis

Download or read book High Speed Clock and Data Recovery Analysis written by Abishek Namachivayam and published by . This book was released on 2020 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: Baud rate clock and data recovery circuits are critical to high speed serial links since these require only one sample per data period thereby requiring low speed samplers and comparators. This work models and discusses the backend of one particular Baud rate CDR – Mueller Muller, and analyses some of the building blocks of the CDR – Phase Detector, Phase Interpolator and the Quadrature Phase Generator. Firstly, a PAM-4 Quadrature Phase Detector operating at 80Gb/s is discussed. The challenges associated with designing a Mueller-Muller PD for an asymmetric channel are discussed and one way to resolve this issue is proposed. Then the underlying digital blocks that make up the Phase detector are expanded upon. Secondly, a 64-step digitally controlled Phase Interpolator running at 16GHz clock rate is analyzed and its design challenges with regards to achieving linearity and ensuring duty cycle fidelity are explored. Finally, a Quadrature Phase Generator with digital delay control is analyzed. It is modeled at 16GHz clock rate and the range/resolution problem and its impact on clock jitter is explored.

Book Design and Modeling of Clock and Data Recovery Integrated Circuit in 130 Nm CMOS Technology for 10 Gb

Download or read book Design and Modeling of Clock and Data Recovery Integrated Circuit in 130 Nm CMOS Technology for 10 Gb written by Maher Assaad and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract This thesis describes the design and implementation of a fully monolithic 10 Gb/s phase and frequency-locked loop based clock and data recovery (PFLL-CDR) integrated circuit, as well as the Verilog-A modeling of an asynchronous serial link based chip to chip communication system incorporating the proposed concept. The proposed design was implemented and fabricated using the 130 nm CMOS technology offered by UMC (United Microelectronics Corporation). Different PLL-based CDR circuits topologies were investigated in terms of architecture and speed. Based on the investigation, we proposed a new concept of quarter-rate (i.e. the clocking speed in the circuit is 2.5 GHz for 10 Gb/s data rate) and dual-loop topology which consists of phase-locked and frequency-locked loop. The frequency-locked loop (FLL) operates independently from the phase-locked loop (PLL), and has a highly-desired feature that once the proper frequency has been acquired, the FLL is automatically disabled and the PLL will take over to adjust the clock edges approximately in the middle of the incoming data bits for proper sampling. Another important feature of the proposed quarter-rate concept is the inherent 1-to-4 demultiplexing of the input serial data stream. A new quarter-rate phase detector based on the non-linear early-late phase detector concept has been used to achieve the multi-Giga bit/s speed and to eliminate the need of the front-end data pre-processing (edge detecting) units usually associated with the conventional CDR circuits. An eight-stage differential ring oscillator running at 2.5 GHz frequency center was used for the voltage-controlled oscillator (VCO) to generate low-jitter multi-phase clock signals. The transistor level simulation results demonstrated excellent performances in term of locking speed and power consumption. In order to verify the accuracy of the proposed quarter-rate concept, a clockless asynchronous serial link incorporating the proposed concept and communicating two chips at 10 Gb/s has been modelled at gate level using the Verilog-A language and time-domain simulated.

Book Design of a Fully Differential High Speed Clock and Data Recovery Circuit Using CMOS

Download or read book Design of a Fully Differential High Speed Clock and Data Recovery Circuit Using CMOS written by Warren Santos and published by . This book was released on 2002 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Jitter Noise and Signal Integrity at High Speed

Download or read book Jitter Noise and Signal Integrity at High Speed written by Mike Peng Li and published by Pearson Education. This book was released on 2007-11-19 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: State-of-the-art JNB and SI Problem-Solving: Theory, Analysis, Methods, and Applications Jitter, noise, and bit error (JNB) and signal integrity (SI) have become today‘s greatest challenges in high-speed digital design. Now, there’s a comprehensive and up-to-date guide to overcoming these challenges, direct from Dr. Mike Peng Li, cochair of the PCI Express jitter standard committee. One of the field’s most respected experts, Li has brought together the latest theory, analysis, methods, and practical applications, demonstrating how to solve difficult JNB and SI problems in both link components and complete systems. Li introduces the fundamental terminology, definitions, and concepts associated with JNB and SI, as well as their sources and root causes. He guides readers from basic math, statistics, circuit and system models all the way through final applications. Emphasizing clock and serial data communications applications, he covers JNB and SI simulation, modeling, diagnostics, debugging, compliance testing, and much more.

Book DRAM Circuit Design

Download or read book DRAM Circuit Design written by Brent Keeth and published by John Wiley & Sons. This book was released on 2007-12-04 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: A modern, comprehensive introduction to DRAM for students and practicing chip designers Dynamic Random Access Memory (DRAM) technology has been one of the greatestdriving forces in the advancement of solid-state technology. With its ability to produce high product volumes and low pricing, it forces solid-state memory manufacturers to work aggressively to cut costs while maintaining, if not increasing, their market share. As a result, the state of the art continues to advance owing to the tremendous pressure to get more memory chips from each silicon wafer, primarily through process scaling and clever design. From a team of engineers working in memory circuit design, DRAM Circuit Design gives students and practicing chip designers an easy-to-follow, yet thorough, introductory treatment of the subject. Focusing on the chip designer rather than the end user, this volume offers expanded, up-to-date coverage of DRAM circuit design by presenting both standard and high-speed implementations. Additionally, it explores a range of topics: the DRAM array, peripheral circuitry, global circuitry and considerations, voltage converters, synchronization in DRAMs, data path design, and power delivery. Additionally, this up-to-date and comprehensive book features topics in high-speed design and architecture and the ever-increasing speed requirements of memory circuits. The only book that covers the breadth and scope of the subject under one cover, DRAM Circuit Design is an invaluable introduction for students in courses on memory circuit design or advanced digital courses in VLSI or CMOS circuit design. It also serves as an essential, one-stop resource for academics, researchers, and practicing engineers.

Book Circuit Techniques for High speed Serial and Backplane Signaling

Download or read book Circuit Techniques for High speed Serial and Backplane Signaling written by Marcus Henricus Van Ierssel and published by . This book was released on 2007 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Second, this thesis proposes a new adaptation technique for a 4-PAM decision-feedback equalizer (DFE). The DFE adapts to the channel impulse response by observing an intermittent calibration sequence sent across the channel. Uninterrupted signaling is maintained across a parallel bus by providing an additional channel and using multiplexers to reroute the signals of the channel being calibrated. Using the intermittent calibration sequence, instead of the conventional LMS adaptation technique, removes the need to generate an error signal, eliminating the associated analog blocks. Also presented is a novel method of using the DFE adaptation circuits to extract the system's pulse response. The complete transceiver is implemented in a 0.18 mum CMOS process. This thesis describes three contributions towards the design and modeling of high-speed serial and backplane signaling systems. Specifically, these contributions address the issues of fitter and intersymbol interference in clock and data recovery circuits. First, this thesis proposes the modeling of jitter in clock and data recovery (CDR) systems using an event-driven model that accurately includes the effects of power-supply noise, the finite bandwidth in the phase-detector's front-end sampler, and ISI in the system's channel. These continuous-time jitter sources are captured in the model through their discrete-time influence on sample based phase-detectors. Modeling parameters for these disturbances are directly extracted from the circuit implementation. The jitter predicted by the event-driven model, implemented in Simulink, is within 12% of that predicted by an Hspice simulation, but with a simulation speed that is 1800 times higher. Finally, a hybrid CDR is proposed that increases the jitter tolerance of a phase-tracking CDR by a factor of 32 at frequencies below its loop filter's bandwidth, while maintaining the high-frequency jitter tolerance of a 5x blind-oversampling CDR. Measured data from a 0.11 um CMOS testchip at 2.4Gb/s confirm a 200UI peak-to-peak jitter tolerance for a 200kHz jitter. The testchip is operational from 1.9Gb/s to 3.5Gb/s and consumes 115mW at 2.4Gb/s.

Book Design Considerations for High speed Clock and Data Recovery Circuits microform

Download or read book Design Considerations for High speed Clock and Data Recovery Circuits microform written by Michel Beshara and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 2002 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Analog Circuit Design

Download or read book Analog Circuit Design written by Herman Casier and published by Springer Science & Business Media. This book was released on 2011-02-01 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analog Circuit Design contains the contribution of 18 tutorials of the 19th workshop on Advances in Analog Circuit Design. Each part discusses a specific to-date topic on new and valuable design ideas in the area of analog circuit design. Each part is presented by six experts in that field and state of the art information is shared and overviewed. This book is number 20 in this successful series of Analog Circuit Design, providing valuable information and excellent overviews of: Robust Design, chaired by Herman Casier, Consultant Sigma Delta Converters, chaired by Prof. Michiel Steyaert, Catholic University Leuven RFID, chaired by Prof. Arthur van Roermund, Eindhoven University of Technology Analog Circuit Design is an essential reference source for analog circuit designers and researchers wishing to keep abreast with the latest development in the field. The tutorial coverage also makes it suitable for use in an advanced design course.

Book High speed Baud rate Clock Recovery

Download or read book High speed Baud rate Clock Recovery written by Faisal Ahmed Musa and published by . This book was released on 2008 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Baud-rate clock recovery (CR) is gradually gaining popularity in modern serial data transmission systems since these CR techniques do not require edge-samples for extracting timing information. However, previous baud-rate techniques for high-speed serial links either rely on specific 4-bit patterns or uncorrelated random data. This work describes the modeling and design of analog filter front-end aided baud-rate CR schemes. Unlike other baud-rate schemes, this technique is not constrained by the properties of the input random data.Firstly, the thesis develops a hardware-efficient baud-rate algorithm that requires only the slope information of the incoming random data. Called modified sign-sign minimum mean squared error (SSMMSE), this algorithm adjusts the clock sampling phase until the slope is zero through a bang-bang control loop. Secondly, the performance of a modified SSMMSE phase detector is investigated and compared with a conventional edge-sampled phase detector. It is shown that, at severe noise levels, the proposed modified SSMMSE method has better performance compared to the edge-sampled method for equal loop bandwidths. Thirdly, the thesis investigates different hardware-efficient slope detection techniques. Both passive and active filter based slope detection techniques are demonstrated in this work. In addition to slope generation, the active filter performs linear equalization as well. However, the passive filter generates the slope information at higher speeds than the active filter and also consumes less power. The two filters are used to recover a 2-GHz clock by using an external bang-bang loop. In short, the thesis demonstrates that area and power savings can be achieved by utilizing slope information from front-end filters without compromising the performance of the CR unit.