And8319d how to maintain usb signal integrity when. From preroute design exploration and whatif analysis through detailed verification and signoff to. Tektronix delivers the bandwidth and timesaving features you need to properly address highspeed signal deviations, quickly locate and trace faults back to their source. Designing a robust and cost effective product is not about blindly following a general set of design rules, rather it is about following a process that helps you apply your engineering intuition to. Altium designers signal integrity tool can be used to find the optimum drive and slew settings for specific fpga pins for example io pins used as data lines in an fpga design. Connecting lots of hubs doesnt affect the signal integrity like that, since the signal is completely reconstituted by every hub in the chain. And8319 how to maintain usb signal integrity when adding. Modify the behavior of the interconnect to meet the constraints. We recently spotted a free free signal integrity simulation tool software called quite universal circuit simulator or qucs for short. If the measured traces cross the mask boundaries the signal quality is considered unacceptable. These include partial inductance as distinct from loop inductance, the origin of ground bounce and emi, impedance, transmission line discontinuities, differential impedance, and attenuation in lossy lines affecting the collapse of.
Solving signal integrity challenges with usb2 redrivers pdf, 141 kb. This presentation will give an introduction to the fundamentals of signal and power integrity engineering for highspeed digital systems with a focus on packaging aspects. Pc university signal and power integrity simplified. Signal integrity basics by anritsu field application engineers table of contents 1. There are tons of free software applications that you can download for office productivity, internet, multimedia, drawing, windows utilities, etc, but if youre not familiar with open source software, you might not know which program is the best out of the myriad of choices. Due to its large file size, this book may take longer to download. For the upstream measurement an enumeration of the device or hub is enough in order to perform these tests so products.
Universal serial bus usb is an industry standard that establishes specifications for cables and connectors and protocols for connection, communication and power supply interfacing between computers, peripherals and other computers. Fundamentals of signal integrity mouser electronics. For the full or low speed signal quality measurements usbet and usbhset can be used. Tutorial checking signal integrity on an fpga design. It is relevant to all xilinx devices up to the virtexii pro series. Pi3usb30532 offers excellent signal integrity for highspeed signals and low power dissipation. Usb, universal serial bus is very easy to use providing a reliable and effective means of transferring data. This book is designed to provide contemporary readers with an understanding of the emerging highspeed signal integrity issues that are creating roadblocks in digital design. Advanced signal integrity for highspeed digital designs. The mask consists of a hexagon in the middle of the eye and rectangles above and below the eye. In addition to requiring a dualrole peripheralhost usb controller, otg requires additional circuitry to support two new protocols, called hnp and srp. Signal integrity testing for high speed serial data. Review of signal integrity concepts at frequencies in the gigahertz range, a host of variables can affect signal integrity.
Highspeed board designers have come to rely upon the venerable ipcd317, design guide for electronic packaging utilizing highspeed techniques in the design of their highspeed circuitry. Eric bogatin sij technical editor larry smith steve sandler picotest bert simonovich lamsim enterprises inc. Signal and power integrity simplified 2nd edition 97802349796 by bogatin, eric and a great selection of similar new, used and collectible books available now at great prices. Tests dc resistance for the whole cable and individual pins pinbypin for usb typec vbusgnd only tests for signal integrity at usb 2. Impedance, time skew, eye diagram measure differential s1121 from rf pogo pin socket to sma comparing long and short traces.
Likewise, a digital signal with good integrity has clean, fast transitions. For more than thirty years he has been active in the fields of signal integrity and interconnect design. Download your free copy of the signal integrity characterization techniques. This is mostly a matter of convenience and ease of use. Tektronix delivers the bandwidth and timesaving features you need to properly address highspeed signal deviations, quickly locate and trace faults back to their source and eliminate schedule delays and reliability issues. Signal integrity pcb considerations during the circuit. This book brings together uptotheminute techniques for finding, fixing, and avoiding signal integrity problems in your design. Digital signal integrity gives engineers all the theory and practical methods they need to accurately model and simulate those interconnections and predict realworld performance. Jul 14, 2008 a synergistic approach to signal integrity for highspeed digital design.
Follow these steps to create installation media usb flash drive or dvd you can use to install a new copy of windows 10, perform a clean installation, or reinstall windows 10. Are you doing everything you can to resolve signal integrity issues in your. The larger the eye the better the data signal integrity. There have been four generations of usb specifications. This book will help you learn more about signal integrity and the highspeed. What are the books,links you would suggest me to learn it. Signal integrity characterization techniques keysight technologies. A digital designers guide to verifying signal integrity. Whether youre modeling microprocessors, memories, dsps, or asics, these techniques will get you to market faster with greater reliability. Even at the lower usb high speed data rate of 480 mbps, usb signals are subject to signal degradation over cables, trace loss, and passive components in the. Traveling over cables presents a similar problem with signal integrity. Switching in usb consumer applications analog devices. A signal redriver can boost the signal so it retains its integrity while traveling the necessary distance to the port.
Released in 1996, the usb standard is currently maintained by the usb implementers forum usbif. Area cover title isbn index signalintegrity digital signal integrity. A synergistic approach to signal integrity for highspeed digital design. Any time an electrical signal is transmitted, signal integrity is a concern. A digital designers guide to verifying signal integrity primer. And also, when it gets there, is it in good condition. We started playing with this software and have started to work on a tutorial about that that you can access here.
A systemlevel summary of pcb design flow, with emphasis on signal and power integrity aspects. The system data transfer rate is highly dependent upon the signaling. Just to add more technical values to my work, i want to learn signal integrity and thermal analysis. Maintain usb signal integrity when adding esd protection ee times. Time domain modeling and measurement were studied and compared. How to avoid common signal integrity issues in your designs altium. As system speeds increase it becomes increasingly more difficult to maintain ideal signal characteristics, requiring careful consideration of signal integrity issues. Signal integrity pcb considerations during the circuit design. Identify signal integrity constraints driver to load delays including effects of crosstalk and ringback overshoot voltages other signal quality measures eye opening 2. Read on to find out how to avoid the most types of signal integrity issues. The universal serial bus usb has become a popular feature of pcs, cell phones and other electronic devices. The goal of signal integrity analysis is to ensure reliable highspeed data transmission.
This paper analyzed the signal integrity of high speed usb io and ic package. Sisoft is an eda software and consulting services company, specializing in highspeed interface design and analysis. Download the latest in pcb design and eda software. Pc university signal and power integrity simplified 2nd. Basic principles of signal integrity altera corporation simultaneous switching output sso effects on signal integrity as digital circuitry speed increases, outputswitching times decrease. This measurment is also called the eye diagram or signal integrity test. The task of isolating and eliminating signal integrity problems anywhere in a systems is challenging. The universal serial bus usb is a popular feature of cell phones, mp3 players and other electronic products. Signal integrity engineering is at all levels of electronics packaging, from internal connections of an ic through the package, the printed circuit board pcb, the.
Any examples of usb high speed signal integrity using hyperlynx. And8319d how to maintain usb signal integrity when adding. Deek offers a simple method to reverse engineer the output impedance of any drivermeasure its open circuit voltage and find the load resistance when the output voltage. For reasons that will be explained here, it is getting more difficult. To achieve this the system has a defined data transfer protocol that enables the data to be formatted and carried in a defined way that provides the reliable communication. They describe everything there is to know about the electrical properties of an interconnect. I bought this and a few other books to catch up to 100 mhz to 1 gig signals, transmission lines, and real world impedances for my designs. Whether youre modeling microprocessors, memories, dsps, or asics, these techniques will get.
Signal integrity engineering is the task of analyzing and mitigating these impairments. Unlike other books that take a general approach to signal integrity, this book takes a few deep dives to apply the simple principles to explain relatively complex effects. In the recently released book larry smith and i wrote, principles of power integrity simplified, we offered a spreadsheet to go along with the book, especially the last chapter. Does the signal reach its destination when it is supposed to. In my latest article in the may 2017 issue of ieee electromagnetic compatibility magazine, my former student, karthik radhakrishna, and i describe a simple process using an open source tool to concatenate sparameter elements sparameters are often called a behavioral model for interconnects. The case for using both tdr and sparameters device package analysis measure impedance lself characterizing device evaluation test board measure differential board impedance measure impact of pogo pin socket on. Advanced signal integrity for highspeed digital designs wiley. Signal ranger dsp linux support tools this project delivers linux support usb driver and tools for a digital signal processor dsp card.
Advanced signal integrity for highspeed digital designs wiley ieee ebook. Sisoft is organized into two complementary business units that provide a broad range of highspeed designanalysis services, training, and products. Acceptable signal qualities are often defined with the use of a mask. Essential principles of signal integrity is the introductory class that reveals the underlying truth of how interconnects affect signal integrity.
118 563 254 127 1250 1481 61 418 1513 49 898 1118 753 333 967 1492 510 1417 1326 64 1063 1173 387 39 590 954 1295 75 1050 106 1028 610 100 554 934 962 234 74