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Подробное введение в использование Xilinx Vivado (3): Использование IP-ядра
Подробное введение в использование ilinx Vivado (3): использование IP-ядра
IPядерный (IP Core）
В Vivado есть множество IP-ядер, которые можно использовать напрямую, например, для математических операций (умножители, делители, арифметика с плавающей запятой и т. Д.), Обработки сигналов (FFT, DFT, DDS и т. Д.). Ядро IP аналогично библиотеке функций в программировании (например, функция printf () на языке C), которую можно вызывать напрямую, что очень удобно и значительно ускоряет скорость разработки.
Метод 1: использованиеVerilogпередачаIPядерный
Вот простой пример использования IP-ядра умножителя с использованием Verilog для вызова. Сначала создайте новый проект, создайте новый модуль верхнего уровня demo.v. (См. Процесс в предыдущем документе)
Щелкните Каталог IP в Flow Navigator.
В разделе «Математические функции» выберите «Множитель», который является множителем, и дважды щелкните его.
Появится диалоговое окно настройки параметров IP-ядра. Щелкните Документация в верхнем левом углу, чтобы открыть руководство для этого IP-ядра для просмотра. Здесь напрямую установите входные сигналы A и B как 4-битные данные без знака, а остальные — значения по умолчанию, нажмите OK.
В появившемся позже окне нажмите «Создать». Щелкните ОК прямо в созданном диалоговом окне.
Global в варианте синтеза означает, что генерируется только код RTL, а затем участвует в синтезе вместе со всем проектом, а Out of context per IP означает, что он синтезируется сразу после генерации.
Выберите IP-источники, разверните и выберите mult_gen_0-Instantiation Template-mult_gen_0.veo, вы можете открыть файл шаблона создания экземпляра. Как показано на рисунке, этот код представляет собой пример кода для вызова этого IP-ядра с помощью Verilog.
Скопируйте образец кода в файл demo.v и измените его, и, наконец, он будет следующим. Код объявляет беззнаковые 4-битные переменные a и b, которым в качестве множителей назначаются начальные значения 7 и 8, соответственно; 8-битная переменная p без знака используется для хранения результата вычислений. clk — это тактовый сигнал 20 нс, записанный Testbench; оператор mult_gen_0 Mymult_gen_0 (. ) создает экземпляр объекта модуля Mymult_gen_0 типа mult_gen_0 и передает clk, a, b и p в качестве параметров.
Проверка моделирования поведения
Используя демонстрацию в качестве модуля верхнего уровня, запустите моделирование поведения для вывода сигналов. Установите a, b и p для отображения в десятичном формате без знака (щелкните правой кнопкой мыши и выберите Radix-Unsigned Decimal). Как показано на рисунке, вы можете видеть, что a = 7, b = 8 и p = a * b = 56 после первого нарастающего фронта тактового сигнала.
Метод 2: вызов IP-ядра в блочном дизайне
Вот простой пример: при вызове IP-ядра умножителя создается новый модуль, который может вычислять квадрат.
Создать файл дизайна блок-схемы
Выберите Create Block Design в Flow Navigator, чтобы создать файл дизайна блок-схемы.
Введите имя файла и нажмите ОК.
Запустив Добавить IP
Мастер, чтобы завершить, или вы можете щелкнуть правой кнопкой мыши в пустой области блок-схемы и выбрать Добавить IP . появится окно IP-каталога, показывающее все возможные IP-адреса, добавленные в этот дизайн.
IP ядро можно добавить и подключить к другим устройствам с помощью проводов.
Дважды щелкните этот символ IP-ядра, чтобы открыть диалоговое окно настройки параметров. Щелкните Документация в левом верхнем углу, чтобы просмотреть руководство по IP-ядру. Здесь для входных данных A и B установлено значение 4 как беззнаковое, а для остальных — значения по умолчанию. Нажмите OK для подтверждения.
Щелкните правой кнопкой мыши пустую область окна диаграммы и выберите «Создать порт».
Во всплывающем окне установите порт a как 4-битный входной сигнал и нажмите OK.
Соедините a с A и B.
Таким же образом добавьте 8-битный выходной порт p и подключите его к P.
Добавьте еще один входной порт clk clock и подключитесь к CLK.
Окончательный результат показан на рисунке.
Нажмите «Инструменты», выберите «Проверить проект», проверьте блок-схему на наличие ошибок и нажмите «ОК».
На панели источника выберите системную блок-диаграмму «system.bd», щелкните правой кнопкой мыши и выберите «Создать продукты вывода», параметр по умолчанию, щелкните «Создать» напрямую, после завершения цикла щелкните «ОК».
На панели источников выберите системную блок-схему «system.bd», щелкните правой кнопкой мыши и выберите «Создать оболочку HDL», выберите второй элемент. Позвольте Vivado управлять оболочкой и автоматическим обновлением, разница между первым элементом и вторым элементом заключается в выберите первый элемент. Элемент указывает, что сгенерированная оболочка позволяет пользователю редактировать ее. Выбор второго элемента означает, что Vivado будет управлять оболочкой и обновлять ее автоматически. Модификация оболочки, выполненная пользователем, будет перезаписана в повторно созданной оболочке HDL. . Выбирайте в соответствии с вашим собственным дизайном.Если сгенерированную оболочку необходимо изменить, выберите первый элемент. Щелкните ОК.
Откройте сгенерированный файл system_1_wrapper.v, как показано на рисунке, код в красном поле используется для вызова ранее нарисованного модуля Block Design.
В файле system_1_wrapper.v добавьте код Testbench для моделирования поведения. Измените код следующим образом, задайте входному сигналу a начальное значение 8, а clk подключится к тактовому сигналу c, сгенерированному Testbench.
Запустите симуляцию поведения, и окончательная форма выходного сигнала будет следующей. Можно видеть, что после первого нарастающего фронта clk есть p = a * a = 64, то есть реализована операция квадрата.
Позвоните другим официальным IP-ядрам, метод тот же, если у вас есть какие-либо вопросы, пожалуйста, направляйте и обменивайтесь.
Ip core xilinx что такое
The Spartan-II family has had very robust core support since the time of its introduction. Xilinx has a range of IP cores such as memory controllers, system interfaces, DSP, communications, networking, and microprocessors. The extensive IP library today includes the following cores: BaseBlox: UARTs, multipliers, DMA
Are Xilinx IP cores free?
The evaluation IP cores can be fully simulated, implemented and tested in real hardware systems, i.e. different Xilinx evaluation kits or custom HW platforms. You must be registered in order to get the logicBRICKS evaluation IP core. The registration is free of charge and there are no registration obligations.
What is IP core in FPGA?
An IP (intellectual property) core is a block of logic or data that is used in making a field programmable gate array ( FPGA ) or application-specific integrated circuit ( ASIC ) for a product. . IP cores fall into one of three categories: hard cores , firm cores , or soft cores .
What is VHDL code?
The VHSIC Hardware Description Language (VHDL) is a hardware description language (HDL) that can model the behavior and structure of digital systems at multiple levels of abstraction, ranging from the system level down to that of logic gates, for design entry, documentation, and verification purposes.
What is IP core in Verilog?
Intellectual property (IP) cores are standalone modules that can be used in any field programmable gate array (FPGA). These are developed using HDL languages like VHDL, Verilog and System Verilog, or HLS like C. IP cores are part of the growing electronic design automation (EDA) industry. Jun 10, 2017
What is Vivado IP?
Chapter 1. IP-Centric Design Flow. Introduction. The Xilinx® Vivado® Design Suite provides an intellectual property (IP) centric design flow. that lets you add IP modules to your design from various design sources. Mar 3, 2020
What is FPGA design?
Field Programmable Gate Arrays (FPGAs) are integrated circuits often sold off-the-shelf. . FPGAs contain configurable logic blocks (CLBs) and a set of programmable interconnects that allow the designer to connect blocks and configure them to perform everything from simple logic gates to complex functions.
What is Vivado IP Integrator?
Learn how Vivado IP Integrator can be used to rapidly connect a Zynq processor to the programmable fabric. Using built in board aware design rule checks and designer automation, Vivado can greatly improve user productivity.
What is IP core network?
An IP core network is the central part of a telecommunications network that provides various services to customers connected by the access network. IP core network and backbone network constitute the high-capacity communication facilities that connect primary nodes.
What is hard IP and soft IP?
Soft IP is anything made from the generic logic fabric (LUTs, logic blocks, etc.) in the FPGA. The capability for soft IP is what makes an FPGA an FPGA. Hard IP is anything that is circuitry that is hard-wired and etched into silicon to do only one thing and do it well. Apr 23, 2020
What are IP Cores (Xilinx) and how can I use them?
IP Cores are Intellectual Property Cores. They are blocks or modules that have been designed and tested for a specific function such as processors, ethernet interfaces and RAM controllers.
Soft IP cores are in the form of HDL and typically have some kind of license associated with them (GPL or proprietary). Hard cores are synthesized blocks that can be instatiated, placed in your design.
The Xilinx specific cores from Xilinx cost money:
**broken link removed**
Ip core xilinx что такое
The Spartan-II family has had very robust core support since the time of its introduction. Xilinx has a range of IP cores such as memory controllers, system interfaces, DSP, communications, networking, and microprocessors. The extensive IP library today includes the following cores: BaseBlox: UARTs, multipliers, DMA
Are Xilinx IP cores free?
The evaluation IP cores can be fully simulated, implemented and tested in real hardware systems, i.e. different Xilinx evaluation kits or custom HW platforms. You must be registered in order to get the logicBRICKS evaluation IP core. The registration is free of charge and there are no registration obligations.
What is IP core in FPGA?
An IP (intellectual property) core is a block of logic or data that is used in making a field programmable gate array ( FPGA ) or application-specific integrated circuit ( ASIC ) for a product. . IP cores fall into one of three categories: hard cores , firm cores , or soft cores .
What is VHDL code?
The VHSIC Hardware Description Language (VHDL) is a hardware description language (HDL) that can model the behavior and structure of digital systems at multiple levels of abstraction, ranging from the system level down to that of logic gates, for design entry, documentation, and verification purposes.
What is IP core in Verilog?
Intellectual property (IP) cores are standalone modules that can be used in any field programmable gate array (FPGA). These are developed using HDL languages like VHDL, Verilog and System Verilog, or HLS like C. IP cores are part of the growing electronic design automation (EDA) industry. Jun 10, 2017
What is Vivado IP?
Chapter 1. IP-Centric Design Flow. Introduction. The Xilinx® Vivado® Design Suite provides an intellectual property (IP) centric design flow. that lets you add IP modules to your design from various design sources. Mar 3, 2020
What is FPGA design?
Field Programmable Gate Arrays (FPGAs) are integrated circuits often sold off-the-shelf. . FPGAs contain configurable logic blocks (CLBs) and a set of programmable interconnects that allow the designer to connect blocks and configure them to perform everything from simple logic gates to complex functions.
What is Vivado IP Integrator?
Learn how Vivado IP Integrator can be used to rapidly connect a Zynq processor to the programmable fabric. Using built in board aware design rule checks and designer automation, Vivado can greatly improve user productivity.
What is IP core network?
An IP core network is the central part of a telecommunications network that provides various services to customers connected by the access network. IP core network and backbone network constitute the high-capacity communication facilities that connect primary nodes.
What is hard IP and soft IP?
Soft IP is anything made from the generic logic fabric (LUTs, logic blocks, etc.) in the FPGA. The capability for soft IP is what makes an FPGA an FPGA. Hard IP is anything that is circuitry that is hard-wired and etched into silicon to do only one thing and do it well. Apr 23, 2020
Генератор системных IP-ядер (CORE Generator & Architecture Wizard)
Теперь рассмотрим более мощные средства для создания сложных элементов принципиальной схемы ПЛИС с помощью встроенного в САПР Xilinx ISE 10.1.i – Генератор системных IP-ядер (CORE Generator & Architecture Wizard). Это очень необходимый и удобный инструмент для разработчика. Он содержит в себе специальные генерируемые библиотеки символов, оптимизированные под конкретное семейство ПЛИС. Можно пользоваться и стандартной библиотекой элементов и на их основе строить более сложные узлы разрабатываемой схемы, но бывают моменты, что разрабатываемая схема должна работать, а она не работает. Это происходит из-за того, что разработчик не учитывает реальные задержки распространения сигнала внутри ПЛИС при работе на высоких скоростях, что на практике бывает очень часто. Поэтому рано или поздно придется воспользоваться данным средством — IP (CORE Generator & Architecture Wizard) и надо набраться терпения, чтобы понять как правильно использовать данное решение в своих разработках.
Вызываем Помощник создания нового источника (New Source Wizard) -> IP (CORE Generator & Architecture Wizard) и задаем имя файла – IP_CORE:
Выбираем необходимое для проекта IP-ядро из целого перечня готовых IP-ядер и следуем инструкциям Помощника создания нового источника:
Соглашаемся с выведенным в диалоговом окне отчетом о проделанной работе и нажимаем кнопку Finish:
Запускается диалоговое окно Генератора системных IP-ядер для выбранного IP-ядра – Distributed Memory Generator:
Далее разработчику предоставляется выбрать все необходимые параметры, которые должен сгенерировать Генератор системных IP-ядер, в частности ширину данных (Data Width), количество данных (Depth – глубина), тип создаваемой памяти (Memory Type):
В следующем окне предлагается выбрать входные и выходные параметры и опции, назначение которых более подробно можно посмотреть в описании на данное IP-ядро, которое вызывается при нажатии на кнопку View Data Sheet. Для простоты пока не будем ничего менять и продолжим работу дальше, нажав на кнопку Next:
А вот следующее диалоговое окно рассмотрим обязательно:
Данное окно предназначено для задания специального файла коэффициентов с расширением *.coe, в котором задаются постоянные или временные начальные данные. Прежде чем начать заполнение данного окна надо с начала создать в любом простом редакторе (Блокнот) сам файл с расширением *.coe по определенному правилу, который определяет правильный формат написания подобного файла:
После того, как файл rom_ip_core.coe будет сформирован и сохранен в рабочем каталоге разрабатываемого проекта, его можно добавлять с помощью кнопки Browse…, которая вызывает диалоговое окно Open:
Таким образом, добавляется Файл коэффициентов (Coefficients File):
Для проверки или просмотра заданных коэффициентов служит кнопка Show…, которая вызывает диалоговое окно для просмотра данных коэффициентов:
Для завершения работы Генератора системных IP-ядер для генерирования нашего IP-ядра нажимаем на кнопку Finish. Обращаю внимание на то, что процесс генерации IP-ядра требует некоторого времени, и в окне Сообщений нужно дождаться надписи – Successfully generated IP_CORE:
В САПР Xilinx ISE 10.1i осталась не большая недоработка, которая приводит к тому, что не всегда можно сразу добавить созданное IP-ядро в схемотехническом редакторе, даже если попытаться обновить изображение схемы нажатием по рабочему полю схемы ПЛИС. Поэтому рекомендую закрывать схемотехнический редактор. Проверить наличие создания IP-ядра в окне Источников (Sources for: ….):
Снова войти в схемотехнический редактор, и добавить IP-ядро в разрабатываемую схему ПЛИС точно так же, как добавляли новый символ — SYNC:
При этом, в редакторе символа можно уменьшить размер и переместить название символа как показано ниже:
При правильной работе САПР Xilinx ISE10.1i при создании IP-ядра выводит диалоговое окно, в котором нужно нажать кнопку Update, далее кнопку OK:
What are IP Cores (Xilinx) and how can I use them?
IP Cores are Intellectual Property Cores. They are blocks or modules that have been designed and tested for a specific function such as processors, ethernet interfaces and RAM controllers.
Soft IP cores are in the form of HDL and typically have some kind of license associated with them (GPL or proprietary). Hard cores are synthesized blocks that can be instatiated, placed in your design.
The Xilinx specific cores from Xilinx cost money:
**broken link removed**
Xilinx IP Cores
The Xilinx website has a comprehensive database of Xilinx LogiCORE and third-party AllianceCORE verified and tested cores. To find them, visit the Xilinx IP Center at www.xilinx.com/ipcenter .
The CORE Generator tool from Xilinx delivers highly optimized cores compatible with standard design methodologies for Xilinx FPGAs.
This easy-to-use tool generates flexible, high-performance cores with a high degree of predictability. You can also download future core offerings from the Xilinx website.
The CORE Generator tool is provided as part of Xilinx Foundation ISE software.
Web-Based Information Guide
The “Products and Services” and “End Markets” sections on the Xilinx website give you information about where and how Xilinx devices can be used in end applications and markets.
The data ranges from application notes, white papers, and industry information to reference designs and example code.
These pages are updated regularly, making them ideal to bookmark for research purposes or for downloading code or design solutions to shorten your design time to market.
X ILINX S OLUTIONS
The sections within the “Products and Services” page on the Xilinx website
F IGURE 2-46: P RODUCTS AND S ERVICES W EBSITE
Let’s look at each of these web-based sections.
E ND M ARKETS
The eSP web portal is located within the “End Markets” section on the Xilinx website. It is the industry’s first web portal dedicated to providing comprehensive solutions that accelerate product development.
To make it as easy as possible, we’ve provided a choice for locating material. You can select a specific market solution or a broad-reaching technology from two drop-down menus: “Network Solutions” or “Technologies.”
In “Market Solutions,” choose from:
• Metro Access Networks
• Medical and Scientific
P ROGRAMMABLE L OGIC D ESIGN : Q UICK S TART H ANDBOOK • C HAPTER 2
• Test and Measurement
• Digital Video Technologies (DVT)
In the “Technologies” section, choose from:
• Additional Topics (such as digital video imaging and capture and editing).
The site was designed to decrease the time spent in the pre-design phase. This phase, which increasingly has become the designers’ Achilles’ heel, involves visiting seminars, learning new standards, assimilating the data, analyzing market trends, and more.
The eSP web portal saves time by proving up-to-date information about emerging standards and protocols, how and where they are used, impartial information about which one is best for your application, and pre-tested reference designs that can be purchased and used.
The eSP web portal ( www.xilinx.com/esp ) includes:
• Ask the Experts
• Glossary of Terms
• System Solutions Boards/reference design boards
• Tutorials on the latest standards and protocols.
S ILICON P RODUCTS AND S OLUTIONS
These web pages allow you to gain in-depth details on Xilinx silicon products, including FPGAs (Virtex and Spartan), CPLDs (CoolRunner and XC9500) and RocketPHY™ transceivers. Data sheets, user guides, FAQs, white papers, and application notes are also available.
D ESIGN R ESOURCES
This section details the selection of Xilinx and third-party design software. From here, you can also go to the IP Center for details about development boards and platforms.
X ILINX S OLUTIONS
S YSTEM R ESOURCES
These web pages detail the XtremeDSP solutions that deliver the performance and flexibility needed to quickly build complex, high-performance DSP systems.
Driven by the broadband revolution and explosive growth in wireless products, the demand for digital signal processing featuring extreme performance and great flexibility is growing faster than what conventional DSP can deliver.
The rapid convergence of different technology segments – 3G and 4G wireless communication systems, high-bandwidth networking, real-time video broadcasting, and high-performance computing systems – is producing what analysts call ”The beginning of a new information technology era.”
Xilinx, the recognized leader in programmable logic solutions, is well established in these technology segments and uniquely positioned to address this new DSP paradigm now.
The XtremeDSP solution can give you computing capabilities approaching 1 Tera MAC/s – more than 100 times faster than conventional DSP solutions.
Using our comprehensive line of industry-leading FPGAs, easy-to-use tools, and optimized algorithms, along with the most comprehensive technical support, services, and third-party programs in the industry, you’ll have the confidence to tackle even the most challenging applications using the Xilinx XtremeDSP tool.
DSP Central provides information that will enable you to achieve the maximum benefit from Xilinx DSP solutions. This section provides details and design information in the following areas:
In this comprehensive listing of intellectual property, you can search for algorithms by type:
• Communication and Networking
X ILINX O NLINE (IRL)
You can access and upgrade hardware from your desktop anywhere in the world with the Xilinx IRL capability.
The mission of the Xilinx Online program is to enable, identify, and promote any Xilinx programmable system that is connected to a network that can
Ip core xilinx что такое
Есть много IP-сердечников в Vivado использовать напрямую, например, математические операции (умножители, дивизии, операторы с плавающей точкой и т. Д.), Обработка сигналов (FFT, DFT, DDS и т. Д.). IP-ядро, похожее на библиотеку программирования (например, язык C printf() Функция), можно назвать напрямую, очень удобно ускорить скорость разработки.
Используйте Verilog, чтобы вызвать IP-ядро
Вот пример использования IP-ядра мультипликатора, используйте вызовы Verilog. Первый новый проект, новое строительство demo.v Верхний модуль.
Добавить IP-ядро
Щелчок Flow Navigator середина IP Catalog 。
Выбрать Math Functions Ниже Multiplier Множитель и двойной щелчок.
Диалоговое окно настройки параметров появится диалоговое окно IP-ядро. Нажмите на левый верхний угол Documentation Вы можете открыть это ядро IP, используя это ядро IP. Здесь входные сигналы A и B устанавливаются непосредственно на 4-битные не символические данные, а другие по умолчанию нажмите ОК.
Нажмите на окно, которое всплывает позже Generate 。
Вызов IP Core
Выбрать IP Sources Развернуть и выберите mult_gen_0 — Instantiation Template — mult_gen_0.veo Вы можете открыть файл шаблона инсалиции. Как показано на рисунке, этот код является примером кода для вызова этого IP-ядра с помощью Verilog.
Скопируйте образец код на demo.v В файл и изменено, в конечном итоге следующее. Код объявлен в 4-битных переменных A и B, соответственно назначающим начальные значения 7, 8, как использование умножителя; нет символической 8-битной переменной P, для сохранения результата расчета. CLK — цикл 20ns тактовой сигнал, написанный в Testbench; mult_gen_0 mul(. ) Заявление создается. mult_gen_0 Тип объекта модуля mul И включить CLK, A, B и P в качестве параметров.
- module demo(
- );
- reg clk = 0;
- always #10 clk =
Проверка поведенческого моделирования
Принимая демо в качестве верхнего модуля, начните симуляцию поведения, вы можете вывести форму волны. Установите, B, P Дисплей в виде беззнаковных десятичных (щелкните правой кнопкой мыши) Radix — Unsigned Decimal ). Как показано на рисунке, вы можете увидеть a=7, b=8 После того, как первые часы поднимаются p = a * b = 56 。
Коробка (блок-дизайн) называется IP-ядро
Здесь простой пример вызывается путем вызова MultiLier IP-сердечника, создавая новый модуль, который может рассчитать квадрат.
Создайте файл дизайна блок-диаграммы
Выбрать Flow Navigator середина Create Block Design Создайте файл дизайна блок-диаграммы.
Введите имя файла и нажмите OK 。
Добавить IP-ядро
Щелкните правой кнопкой мыши на поле, выберите Add IP 。
Вы можете найти напрямую, вы можете найти IP-ядро, дважды щелкните подтверждение.
IP-ядро может быть добавлено для подключения к другим устройствам с проводом.
Дважды щелкните этот символ ядра IP, вы можете открыть диалоговое окно «Настройки параметров». Нажмите на левый верх Documentation Вы можете просмотреть основное руководство IP. Здесь все из которых введены здесь до 4 — без знака, и другие значения по умолчанию щелкните OK подтверждать.
Схема рисования
Щелкните правой кнопкой мыши Diagram Окно пробел, выберите Create Port 。
Всплывающее окно, установите порт a Для 4-значного входного сигнала нажмите OK 。
будут a против A 、 B Они связаны.
Тот же метод, добавить 8-битный выходной порт p ,против P связь.
Добавьте еще один clk Порт ввода часов, с CLK связь.
Конечный результат как показано.
Тест моделирования
Щелкните правой кнопкой мыши на файле дизайна диаграммы коробки design_1 ,Выбрать Create HDL Wrapper 。
Выберите второй элемент и нажмите OK 。
Открытый design_1_wrapper.v Файл, как показано на рисунке, код в красном поле используется для вызова предыдущих окрашенных Block Design Модуль.
в design_1_wrapper.v В файле вы можете добавить код TestBench, чтобы сделать поведенческое моделирование. Код модификации выглядит следующим образом, дайте входной сигнал a Начальное значение 8 ， clk Подключиться к тактовой сигналу TestBench c на.
- wire [3:0]a = 8;
- wire clk;
- wire [7:0]p;
- reg c = 0;
- always #10 c <=
в Simulation Sources Под папкой, установить design_1_wrapper.v Верхний файл (щелкните правой кнопкой мыши, выберите) для поведенческого моделирования Set as Top ）。
Начните симуляцию поведения, форма волны окончательного выхода заключается в следующем. Это можно увидеть, clk После первого роста края есть p = a*a = 64 То есть реализовать квадратную операцию.
Xilinx IP Cores
The Xilinx website has a comprehensive database of Xilinx LogiCORE and third-party AllianceCORE verified and tested cores. To find them, visit the Xilinx IP Center at www.xilinx.com/ipcenter .
The CORE Generator tool from Xilinx delivers highly optimized cores compatible with standard design methodologies for Xilinx FPGAs.
This easy-to-use tool generates flexible, high-performance cores with a high degree of predictability. You can also download future core offerings from the Xilinx website.
The CORE Generator tool is provided as part of Xilinx Foundation ISE software.
Web-Based Information Guide
The “Products and Services” and “End Markets” sections on the Xilinx website give you information about where and how Xilinx devices can be used in end applications and markets.
The data ranges from application notes, white papers, and industry information to reference designs and example code.
These pages are updated regularly, making them ideal to bookmark for research purposes or for downloading code or design solutions to shorten your design time to market.
X ILINX S OLUTIONS
The sections within the “Products and Services” page on the Xilinx website
F IGURE 2-46: P RODUCTS AND S ERVICES W EBSITE
Let’s look at each of these web-based sections.
E ND M ARKETS
The eSP web portal is located within the “End Markets” section on the Xilinx website. It is the industry’s first web portal dedicated to providing comprehensive solutions that accelerate product development.
To make it as easy as possible, we’ve provided a choice for locating material. You can select a specific market solution or a broad-reaching technology from two drop-down menus: “Network Solutions” or “Technologies.”
In “Market Solutions,” choose from:
• Metro Access Networks
• Medical and Scientific
P ROGRAMMABLE L OGIC D ESIGN : Q UICK S TART H ANDBOOK • C HAPTER 2
• Test and Measurement
• Digital Video Technologies (DVT)
In the “Technologies” section, choose from:
• Additional Topics (such as digital video imaging and capture and editing).
The site was designed to decrease the time spent in the pre-design phase. This phase, which increasingly has become the designers’ Achilles’ heel, involves visiting seminars, learning new standards, assimilating the data, analyzing market trends, and more.
The eSP web portal saves time by proving up-to-date information about emerging standards and protocols, how and where they are used, impartial information about which one is best for your application, and pre-tested reference designs that can be purchased and used.
The eSP web portal ( www.xilinx.com/esp ) includes:
• Ask the Experts
• Glossary of Terms
• System Solutions Boards/reference design boards
• Tutorials on the latest standards and protocols.
S ILICON P RODUCTS AND S OLUTIONS
These web pages allow you to gain in-depth details on Xilinx silicon products, including FPGAs (Virtex and Spartan), CPLDs (CoolRunner and XC9500) and RocketPHY™ transceivers. Data sheets, user guides, FAQs, white papers, and application notes are also available.
D ESIGN R ESOURCES
This section details the selection of Xilinx and third-party design software. From here, you can also go to the IP Center for details about development boards and platforms.
X ILINX S OLUTIONS
S YSTEM R ESOURCES
These web pages detail the XtremeDSP solutions that deliver the performance and flexibility needed to quickly build complex, high-performance DSP systems.
Driven by the broadband revolution and explosive growth in wireless products, the demand for digital signal processing featuring extreme performance and great flexibility is growing faster than what conventional DSP can deliver.
The rapid convergence of different technology segments – 3G and 4G wireless communication systems, high-bandwidth networking, real-time video broadcasting, and high-performance computing systems – is producing what analysts call ”The beginning of a new information technology era.”
Xilinx, the recognized leader in programmable logic solutions, is well established in these technology segments and uniquely positioned to address this new DSP paradigm now.
The XtremeDSP solution can give you computing capabilities approaching 1 Tera MAC/s – more than 100 times faster than conventional DSP solutions.
Using our comprehensive line of industry-leading FPGAs, easy-to-use tools, and optimized algorithms, along with the most comprehensive technical support, services, and third-party programs in the industry, you’ll have the confidence to tackle even the most challenging applications using the Xilinx XtremeDSP tool.
DSP Central provides information that will enable you to achieve the maximum benefit from Xilinx DSP solutions. This section provides details and design information in the following areas:
In this comprehensive listing of intellectual property, you can search for algorithms by type:
• Communication and Networking
X ILINX O NLINE (IRL)
You can access and upgrade hardware from your desktop anywhere in the world with the Xilinx IRL capability.
The mission of the Xilinx Online program is to enable, identify, and promote any Xilinx programmable system that is connected to a network that can
The Ultimate Guide to IP Cores
Welcome to the world of semiconductor IP cores. This article starts off with an introduction to the idea behind IP cores, the need, a few examples, and then provide some tips on how purchase an IP core and where to find them.
What is an IP Core?
Over the past couple of decades, FPGAs and SoCs have moved forward with a rapid pace. The reasons are firstly the development of advanced EDA tools which enabled designers to make complex and large design and translate them into ASICs efficiently — and secondly, new silicon process nodes were introduced enabling engineers to squeeze more transistor into a given area. The demand of adding more functionality into chips increased as well. This resulted in a huge burden on designers as the ASIC design flow became longer and more complicated.
To overcome the challenges of complex ASICs and longer design cycles, IP cores were introduced so that engineers can focus their efforts on their core innovative technology – what really matter. IP cores were first introduced in late 1990s. Many small startups and large players started to create and sell IP cores allowing SoC designers to buy IP blocks, and integrated them into their design with low effort and risk.
Today, there are between 3-30 different IP blocks in every new SoC.
IP cores are split into two types, one is soft IP cores and the other is hard IP cores.
Soft IP cores are the ones where the designer can modify the code and add new functionality to the existing core. Soft IP cores are often provided in the form of HDL and can also be a case where it is provided as the gate level netlist files.
Hard IP cores are the ones, where the designer doesn’t have any option to modify the core’s basic functions. Such type of cores can be provided in the form of physical layout. This can come as a file (GDS) which can be fabricated from a foundry and cannot be modified (easily).
IP Core Examples
There are several IP cores available, both soft and hard. A couple of examples are listed here:
LogiCORE FIR Compiler Core
In digital signal processing, the most important is the filter component which is used to pass or stop desired frequencies. This implementation of the filters is also complex for the ICs. So, another core which is very important is the FIR Compiler by Xilinx.
This IP core can be used to implement multiple types of filters which include interpolated filters, Hilbert transform, pass band, stop band, half band, low pass band, high pass band, single rate filter. FIR filter is the one which is most used in digital signal processing. This conventional FIR filter is implemented using the below equation:
In equation above, N defines the number of filter coefficients for the FIR filter, higher coefficients, steeper step response and complexity is higher as the number of taps are increased. The conventional delay line for FIR filter is shown in figure below. One can observe in the figure below that as with each tap added to the delay line delay component (z -1 ), multiplier and adder also increase by a factor of one.
By each increase in above mentioned components the complexity of the algorithm increased. To overcome this issue, an IP core is used for this purpose. In this IP Core (shown in figure below), one has to set the parameters which include type of filter, frequency range, pass or stop band frequencies, number of taps, etc. A sample picture of the FIR Compiler screen is shown, which is take from Xilinx software. In this snapshot, a low pass filter is shown with a frequency range of 0 – 250 MHz and the stop band are limited to 125 – 250 MHz within the band required. The tool also shows a plot of the expected response of the filter.
8-bit Microcontroller D6803
In a system design, sometimes we require to automate some circuits and also use some battery-driven applications. The easiest way to handle such applications is the use of a microcontroller. But in ASICs, it is tough to implement the functionality of a microcontroller. For this purpose, D6803 IP core is presented by “Digital Design Core” which implements the function of an 8-bit microcontroller which is MC6803 by Motorola. Block diagram of MC6803 is shown below (which is taken from the datasheet of the Motorola microcontroller.
The provided core is fully synthesizable, and it can replace directly the Motorola MC6803. This core provides all the required features which include, a Control Unit, A decoder to decode the operation instructions (Opcode Decoder), Arithmetic Logic Unit (ALU), Bus controller to control and program memory, interrupt controller, the timer functionality to generate clock signals, and for interface SCI and IO ports are also provided. A real-time hardware debug unit (DoCD) is also included which is used to add functionality to debug whole SoC system.
This core comes with a good support, it has Verilog or VHDL source code with the testbench as well, netlist which can be used for silicon manufacturing, and all the technical documentations are also provided with the delivery of the IP core.
Purchasing an IP Core
Before purchasing an IP core, it is important to keep a few factors in mind:
Definition: a clear requirement document is a good start. Before you engage with any vendor, collect all the requirements into a single document (including your wish list) and make sure you have an internal agreement from your peers and stakeholder.
FPGA or SoC: IP cores can be targeted to FPGAs or SoC. So, depending on this requirement it is desirable to know which platform should be support by the IP core vendor. There are IP cores which are compatible with all FPGA devices and there are some that have limited support. If the IP core is targeted into a SoC design, then the fab name, process options and wafer configuration should be defined before purchasing the IP core.
Quality: Is the IP core fully tested and verified? Is it “silicon proven”, meant, whether the IP core has been tested in real-life inside an ASIC or an FPGA? The term “silicon proven” is a typical requirement from customers because they don’t want to take any risk if the IP is not tested in real life (e.g. on an ASIC).
Documentation: an IP core, is not just the HDL code or a GDSII database. It should also include proper documentation, datasheets, and additional collateral to help designers use the IP properly. A clear and concise documentation is a must for all IP core products.
Testability: following the integration of the IP core into the FPGA or SoC, the designer should be able to run various tests to verify the IP core functionality as a unit and inside the entire system. Therefore, it’s mandatory that test bench files and simulator related data should also be part of the deliverables.
Business model: some IP vendors will charge you for buy the IP and some will ask for royalties, which model is best for your company?
IP Core Market
IP Core market is considered amongst fastest growing market in the semiconductor industry with an estimated market value of about 5.6 billion USD in 2020. And for 2021, the market is expected to rise to about 7.3 billion USD. There are a number of market leaders who provide various IP cores. Some of the largest players are listed here:
The Future of IP Core
SoC are playing a vital role in developing every kind of intelligence and automation in many industries – from sensor to servers. With the increased growth in the field of information IoT and artificial intelligence, IP cores will play a vital role in the development of new. Using IP cores, fabless companies can accelerate time to market, reduce development cost and deliver state of the art SoCs designs with taking less risks.
Ip core xilinx что такое
IP Cores For FPGA Designs
Intellectual property (IP) cores are standalone modules that can be used in any field programmable gate array (FPGA). These are developed using HDL languages like VHDL, Verilog and System Verilog, or HLS like C.
IP cores are part of the growing electronic design automation (EDA) industry. In this article, these will be discussed with respect to SRAM based FPGAs.
Let us take an example of universal asynchronous receiver-transmitter (UART) IP block, which is intended to be used in different applicatons. The developed UART IP core module should:
• Meet basic UART functionalities
• Be portable, so that it can be used in any vendor technologies; for example, Xilinx/Altera as plug and play
• Have user-configurable parameters (like baud rate)
• Have processor interface/generic parameter file to modify configurations as required
• Provide IP data sheet
Fig. 1: Xilinx Vivado – FPGA selection overview includes hard blocks
Types of IP cores
IP cores can be categorised as hard IP core, firm IP (semi-hard IP) core and soft IP core.
Hard IP cores.
These are part of the FPGA-independent modules; for example, PCIe or Ethernet IP modules available in Xilinx FPGA. You have to configure the location and provide interface connectivity with other modules, clocks and resets. Since these blocks are already part of the FPGA device, these will not be taken into account while calculating the utilisation of the slice logic report. In the utilisation summary, these will be counted as the number of PCIe/Ethernet blocks used. Because of a fixed location in the FPGA, these cores cannot be ported to other FPGAs. Neither can these be reused like HDL components, if already used in the FPGA.
Fig. 1 shows Xilinx Vivado tool – FPGA selection window for Virtex-7 FPGA with internal hard IP details for creating the project. The number of hard IPs may vary between different FPGA families.
Fig 2. shows the dedicated location of the hard IP in Virtex-7 FPGA.
Unmarked (not labelled) areas (between DSP slice and block RAM, or block RAM and PCIe, or PCIe and transceivers) in the FPGA (Fig. 2) contain large distribution of flip-flops, latches, multiplexers, LUTs, etc. Soft IP cores or custom logic are implemented in these areas.
Fig. 2: Xilinx Vivado – Virtex-7 FPGA hard IP core locations
Advantages include:
• Timing violations minimised
• No extra cost, that is, cost of the hard block is included in the FPGA; hence, can be considered as low-cost compared to other two types of IP cores
• No individual licence, except for compiler tool licence
• RTL code maintenance reduced
• No extra documentation required; for each IP level, documentation provided by vendor
• For slice/LUT summary, hard IP cores not considered
• Low dynamic and static power can be achieved if hard IP blocks are used in the designs
• Functionality and performance guaranteed
• Fully-tested and with known errors/limitations, if any, as per documents provided by vendor
Disadvantages include:
• Not portable; these are highly optimised and targeted at specific FPGAs
• Fixed implementation with pre-defined constraints
• Limited availability of number of hard IPs with respect to particular FPGAs
Firm IP cores.
Firm IP cores are also known as semi-hard IP cores. These are a form of gate-level netlist, where you have the flexibility to place the module in the FPGA as per usage and with minimal user-programmable configurations.
For example, if a third-party IP is targeted at Xilinx FPGA, then the IP provided will be .ngc file. You can integrate this file with your project and instantiate it as a component in the top level to interconnect with other modules, and then proceed with synthesis.
To use a firm IP core, you should have proper FPGA resource planning and requirement specifications before procuring the IP for the project.
Xilinx Coregen-generated IP cores (like FIFO, shift registers and memory interface cores) can be grouped into the firm IP core category. You have to include .ngc/.xco in the project directory (for Xilinx), and specify the instantiation in the top file. Instantiated components can be moved around within the FPGA to meet performance and timing.
Advantages are:
• Modifications allowed to some extent
• Functionality and performance are measurable
• Resource utilisation considers firm IP logic area
• Completely tested
• Documentation may be available up to some level
Disadvantages are:
• Limited portability
• Modifications to source not possible
• May be licensed based on cost
• Source utilisation matters while considering the FPGA
• Timing/performance may have impact
Soft IP cores.
These are completely flexible and do not depend on vendor technology. These can be ported across various FPGA platforms. The IPs are developed using HDL languages and you are provided with source codes, so the IPs can be modified according to your application and easily integrated with your modules. These are reusable and can be targeted at many variants of FPGAs.
In Xilinx FPGAs, ARM, Zynq and PowerPC processors fall under hard IP category, whereas Microblaze falls in the soft IP group.
Similarly, in Altera, ARM, Intel ATOM processors come under hard IP core, and Nios-II processor under soft IP core.
Examples for other soft IP cores are 8051 microcontrollers IP, I2C controllers, SPI controllers, standard bus interfaces or any open core whose source can be modified.
Intellectual Property
Xilinx and our Partners have a rich library of Intellectual Property (IP), to help you get to market faster. Our IP goes through a vigorous test and validation effort to help you have success the first time. Beyond a simple library of cores we provide other solutions to help your productivity. IP Integrator is a GUI which enables rapid connection of IP which is enabled by a common user interface that is AXI based. This can reduce the design effort by months. We also have IP Subsystems that integrate multiple IP into one solution. Why generate a DMA and PCIe core, when we can deliver an IP Subsystem that does this for you. We have many other Subsystems too. Why worry about peripheral interfaces? Let us help you get to market faster. Focus on your application design. Our IP Solutions are designed to make you more productive.