VHDL, the IEEE standard hardware description language for describing digital electronic systems, allows engineers to describe the structure and specify the function of a digital system as well as ...simulate and test it before manufacturing. In addition, designers use VHDL to synthesize a more detailed structure of the design, freeing them to concentrate on more strategic design decisions and reduce time to market. Adopted by designers around the world, the VHDL family-of-standards have recently been revised to address a range of issues, including portability across synthesis tools. This best-selling comprehensive tutorial for the language and authoritative reference on its use in hardware design at all levels, from system to gates, has been revised to reflect the new IEEE standard, VHDL-2001. The author presents the entire description language and builds a modeling methodology based on successful software engineering techniques. This second edition updates the first, retaining the author’s unique ability to teach this complex subject to a broad audience of students and practicing professionals.
Due to recent developments, the POSIT number system, winch has been planned as a successor for numbers that are expressed in IEEE floating-point, which are in the focus of advances in arithmetic. ...Although this format claims to deliver more precise outcomes with the same bit width as ordinary floating point, the duration of the operation fluctuation during posit field identification poses a hardware design problem. The POSIT-based MAC Unit is created using Verilog HDL in this study, and the designed architecture is evaluated for good operation before being implemented on an FPGA using Xilinx Vivado.
The demand is exploding for complete, integrated systems that sense, process, manipulate, and control complex entities such as sound, images, text, motion, and environmental conditions. These ...systems, from hand-held devices to automotive sub-systems to aerospace vehicles, employ electronics to manage and adapt to a world that is, predominantly, neither digital nor electronic. To respond to this design challenge, the industry has developed and standardized VHDL-AMS, a unified design language for modeling digital, analog, mixed- signal, and mixed-technology systems. VHDL-AMS extends VHDL to bring the successful HDL modeling methodology of digital electronic systems design to these new design disciplines. Gregory Peterson and Darrell Teegarden join best-selling author Peter Ashenden in teaching designers how to use VHDL-AMS to model these complex systems. This comprehensive tutorial and reference provides detailed descriptions of both the syntax and semantics of the language and of successful modeling techniques. It assumes no previous knowledge of VHDL, but instead teaches VHDL and VHDL-AMS in an integrated fashion, just as it would be used by designers of these complex, integrated systems. * Explores the design of an electric-powered, unmanned aerial vehicle system (UAV) in five separate case studies to illustrate mixed-signal, mixed-technology, power systems, communication systems, and full system modeling.
The VHSIC Hardware Description Language (VHDL) is one of the two
most popular languages used to design digital logic circuits. This
book provides a comprehensive introduction to the syntax and the
...most commonly used features of VHDL. It also presents a formal
digital design process and the best-case design practices that have
been developed over more than twenty-five years of VHDL design
experience by the author in military ground and satellite
communication systems. Unlike other books on this subject, this
real-world professional experience captures not only the
what of VHDL, but also the how . Throughout the
book, recommended methods for performing digital design are
presented along with the common pitfalls and the techniques used to
successfully avoid them. Written for students learning VHDL for the
first time as well as professional development material for
experienced engineers, this book's contents minimize design time
while maximizing the probability of first-time design success.
This book uses a "learn by doing" approach to introduce the concepts and techniques of VHDL and FPGA to designers through a series of hands-on experiments. FPGA Prototyping by VHDL Examples provides ...a collection of clear, easy-to-follow templates for quick code development; a large number of practical examples to illustrate and reinforce the concepts and design techniques; realistic projects that can be implemented and tested on a Xilinx prototyping board; and a thorough exploration of the Xilinx PicoBlaze soft-core microcontroller.
This article describes a custom VHDL firmware implementation of a two-dimensional cluster-finder architecture for reconstructing hit positions in the new vertex pixel detector (VELO) that is part of ...the LHCb Upgrade. This firmware has been deployed to the existing FPGA cards that perform the readout of the VELO, as a further enhancement of the DAQ system, and will run in real time during physics data taking, reconstructing VELO hits coordinates on-the-fly at the LHC collision rate. This pre-processing allows the first level of the software trigger to accept an 11% higher rate of events, as the ready-made hit coordinates accelerate the track reconstruction and consumes significantly less electrical power. It additionally allows the raw pixel data to be dropped at the readout level, thus saving approximately 14% of the DAQ bandwidth. Detailed simulation studies have shown that the use of this real-time cluster finding does not introduce any appreciable degradation in the tracking performance in comparison to a full-fledged software implementation. This work is part of a wider effort aimed at boosting the real-time processing capability of HEP experiments by delegating intensive tasks to dedicated computing accelerators deployed at the earliest stages of the data acquisition chain.
The image processing is one from the most powerful fields in the modern DSP techniques; also it has wide range of applications this day such as image compression, filtering and coloring. However, ...these processes required to a huge data processing so it has a problem under real time or movie.The huge data processing under real time requires spatial processing tools such as super parallel processing computers or spatial hardware systems. This paper introduces a mechanism of coloring gray scale image algorithm through dedicated hardware devices.The FPGA devices are used as a more suitable platform for image processing applications, special methods of parallelism and pipelining technique can be reconfigured and synthesized on FPGA categories, Xilinx series are selected as a platform of coloring algorithm by transferring the color property between par image, source (colored) and target (gray) images.The algorithm colorizes each gray scaled pixel by matching chromatic value of it with each pixel of colored image and synthesis it on the Xilinx FPGA devices using VHDL synthesizer tool. Many computational and process manners of this scherme are presented bit precision for each pixel of pair image of 8-Finally, testing and performance of this technique obtained on ISE 4.1i software implementation and comparing results.
Encryption algorithms work with very large key values to provide higher security. In order to process high-capacity data in real-time, we need advanced hardware structures. Today, when compared to ...the previous designing methods, the required hardware solutions can be designed more easily by using Field Programmable Gate Array (FPGA). Over the past decade, FPGA speeds, capacities, and design tools have been improved. Thus, the hardware that can process data with high capacity can be designed and produced with lower costs.
The purpose of this study is to create the components of a high-speed arithmetic unit that can process high-capacity data, which can also be used for FPGA encoding algorithms.
In this study, multiplication algorithms were analyzed and high-capacity adders that constitute high-speed multiplier and look-up tables were designed by using Very High-Speed Integrated Circuit Hardware Description Language (VHDL). The designed circuit/multiplier was synthesized with ISE Design Suite 14.7 software. The simulation results were obtained through ModelSIM and ISIM programs.
In Bresenham's line drawing algorithm, the points of an n-dimensional raster that have to be selected are determined forming a close approximation to a straight line existed between two points. It is ...widely used for drawing line primitives in a bitmap image (for example: on a computer screen), since only integer addition, subtraction and bit shifting are used. These three operations are cheap concerning standard computer architectures. In addition, it is an incremental error algorithm. It is among the oldest algorithms that have been developed in computer graphics. An extension to the original algorithm may lead to draw circles. This research deals with the Bresenham’s line and circle drawing algorithm based on FPGA hardware platform. The shapes on the VGA screen are displayed via internal VGA port that is built in the device.
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