This application note covers the design considerations of a system using the performance features of the LogiCORE™ IP Advanced eXtensible Interface (AXI) Interconnect core. The design focuses on high system throughput through the AXI Interconnect core with F MAX and area optimizations in certain portions of the design. The design uses five AXI video direct memory access (VDMA) engines to simultaneously move 10 streams (five transmit video streams and five receive video streams), each in 1920 x 1080p format, 60 Hz refresh rate, and up to 32 data bits per pixel. Each VDMA is driven from a video test pattern generator (TPG) with a video timing controller (VTC) block to set up the necessary video timing signals. Data read by each AXI VDMA is sent to a common on-screen display (OSD) core capable of multiplexing or overlaying multiple video streams to a single output video stream. The output of the OSD core drives the DVI video display interface on the board. Performance monitor blocks are added to capture performance data. All 10 video streams moved by the AXI VDMA blocks are buffered through a shared DDR3 SDRAM memory and are controlled by a MicroBlaze™ processor. The reference system is targeted for the Virtex-6 XC6VLX240TFF1156-1 FPGA on the Xilinx® ML605 Rev D evaluation board
標(biāo)簽： XAPP 740 AXI 互聯(lián)
上傳時(shí)間： 2013-11-23
上傳用戶：shen_dafa
XAPP520將符合2.5V和3.3V I/O標(biāo)準(zhǔn)的7系列FPGA高性能I/O Bank進(jìn)行連接 The I/Os in Xilinx® 7 series FPGAs are classified as either high range (HR) or high performance (HP) banks. HR I/O banks can be operated from 1.2V to 3.3V, whereas HP I/O banks are optimized for operation between 1.2V and 1.8V. In circumstances that require an HP 1.8V I/O bank to interface with 2.5V or 3.3V logic, a range of options can be deployed. This application note describes methodologies for interfacing 7 series HP I/O banks with 2.5V and 3.3V systems
上傳時(shí)間： 2013-11-06
上傳用戶：wentianyou
一些應(yīng)用利用 Xilinx FPGA 在每次啟動(dòng)時(shí)可改變配置的能力，根據(jù)所需來改變 FPGA 的功能。Xilinx Platform Flash XCFxxP PROM 的設(shè)計(jì)修訂 (Design Revisioning) 功能，允許用戶在單個(gè)PROM 中將多種配置存儲為不同的修訂版本，從而簡化了 FPGA 配置更改。在 FPGA 內(nèi)部加入少量的邏輯，用戶就能在 PROM 中存儲的多達(dá)四個(gè)不同的修訂版本之間進(jìn)行動(dòng)態(tài)切換。多重啟動(dòng)或從多個(gè)設(shè)計(jì)修訂進(jìn)行動(dòng)態(tài)重新配置的能力，與 Spartan™-3E FPGA 和第三方并行 flashPROM 一起使用時(shí)所提供的 MultiBoot 選項(xiàng)相似。本應(yīng)用指南將進(jìn)一步說明 Platform Flash PROM 如何提供附加選項(xiàng)來增強(qiáng)配置失敗時(shí)的安全性，以及如何減少引腳數(shù)量和板面積。此外，Platform Flash PROM 還為用戶提供其他優(yōu)勢：iMPACT 編程支持、單一供應(yīng)商解決方案、低成本板設(shè)計(jì)和更快速的配置加載。本應(yīng)用指南還詳細(xì)地介紹了一個(gè)包含 VHDL 源代碼的參考設(shè)計(jì)。
標(biāo)簽： Platform Flash XAPP PROM
上傳時(shí)間： 2013-10-10
上傳用戶：wangcehnglin
WP369可擴(kuò)展式處理平臺-各種嵌入式系統(tǒng)的理想解決方案 ：Delivering unrivaled levels of system performance,flexibility, scalability, and integration to developers,Xilinx's architecture for a new Extensible Processing Platform is optimized for system power, cost, and size. Based on ARM's dual-core Cortex™-A9 MPCore processors and Xilinx’s 28 nm programmable logic,the Extensible Processing Platform takes a processor-centric approach by defining a comprehensive processor system implemented with standard design methods. This approach provides Software Developers a familiar programming environment within an optimized, full featured,powerful, yet low-cost, low-power processing platform.
標(biāo)簽： 369 WP 擴(kuò)展式 處理平臺
上傳時(shí)間： 2013-10-18
上傳用戶：cursor
本文討論了如何設(shè)計(jì)有效的testbench，適合剛接觸testbench不久的用戶閱讀提高 （xilinx公司編寫）
標(biāo)簽： Testbenches Efficient Writing
上傳時(shí)間： 2013-10-11
上傳用戶：123454
本文著重介紹了 Xilinx Platform Flash PROM 如何幫助系統(tǒng)和電路板設(shè)計(jì)人員簡化 FPGA 配置設(shè)計(jì)。用于配置 FPGA 的可選解決方案有很多，但它們通常都需要大量的前期設(shè)計(jì)工作和時(shí)間。Platform Flash 是為配置 Xilinx FPGA 專門設(shè)計(jì)的一款包括硬件和軟件支持在內(nèi)的整體解決方案。
上傳時(shí)間： 2013-11-02
上傳用戶：lixinxiang
FPGAs have changed dramatically since Xilinx first introduced them just 15 years ago. In thepast, FPGA were primarily used for prototyping and lower volume applications; custom ASICswere used for high volume, cost sensitive designs. FPGAs had also been too expensive and tooslow for many applications, let alone for System Level Integration (SLI). Plus, the development
標(biāo)簽： Methodology Design Reuse FPGA
上傳時(shí)間： 2013-11-01
上傳用戶：shawvi
Xilinx is disclosing this user guide, manual, release note, and/or specification (the “Documentation”) to you solely for use in the development of designs to operate with Xilinx hardware devices. You may not reproduce, distribute, republish, download, display, post, or transmit the Documentation in any form or by any means including, but not limited to, electronic, mechanical, photocopying, recording, or otherwise, without the prior written consent of Xilinx. Xilinx expressly disclaims any liability arising out of your use of the Documentation. Xilinx reserves the right, at its sole discretion, to change the Documentation without notice at any time. Xilinx assumes no obligation to correct any errors contained in the Documentation, or to advise you of any corrections or updates. Xilinx expressly disclaims any liability in connection with technical support or assistance that may be provided to you in connection with the Information.
標(biāo)簽： CPLD
上傳時(shí)間： 2014-12-05
上傳用戶：qazxsw
針對傳統(tǒng)集成電路（ASIC）功能固定、升級困難等缺點(diǎn)，利用FPGA實(shí)現(xiàn)了擴(kuò)頻通信芯片STEL-2000A的核心功能。使用ISE提供的DDS IP核實(shí)現(xiàn)NCO模塊，在下變頻模塊調(diào)用了硬核乘法器并引入CIC濾波器進(jìn)行低通濾波，給出了DQPSK解調(diào)的原理和實(shí)現(xiàn)方法，推導(dǎo)出一種簡便的引入?仔/4固定相移的實(shí)現(xiàn)方法。采用模塊化的設(shè)計(jì)方法使用VHDL語言編寫出源程序，在Virtex-II Pro 開發(fā)板上成功實(shí)現(xiàn)了整個(gè)系統(tǒng)。測試結(jié)果表明該系統(tǒng)正確實(shí)現(xiàn)了STEL-2000A的核心功能。 Abstract: To overcome drawbacks of ASIC such as fixed functionality and upgrade difficulty, FPGA was used to realize the core functions of STEL-2000A. This paper used the DDS IP core provided by ISE to realize the NCO module, called hard core multiplier and implemented CIC filter in the down converter, described the principle and implementation detail of the demodulation of DQPSK, and derived a simple method to introduce a fixed phase shift of ?仔/4. The VHDL source code was designed by modularity method , and the complete system was successfully implemented on Virtex-II Pro development board. Test results indicate that this system successfully realize the core function of the STEL-2000A.
標(biāo)簽： STEL 2000 FPGA 擴(kuò)頻通信
上傳時(shí)間： 2013-11-19
上傳用戶：neu_liyan
隨著HDL Hardware Description Language 硬件描述語言語言綜合工具及其它相關(guān)工具的推廣使廣大設(shè)計(jì)工程師從以往煩瑣的畫原理圖連線等工作解脫開來能夠?qū)⒐ぷ髦匦霓D(zhuǎn)移到功能實(shí)現(xiàn)上極大地提高了工作效率任何事務(wù)都是一分為二的有利就有弊我們發(fā)現(xiàn)現(xiàn)在越來越多的工程師不關(guān)心自己的電路實(shí)現(xiàn)形式以為我只要將功能描述正確其它事情交給工具就行了在這種思想影響下工程師在用HDL語言描述電路時(shí)腦袋里沒有任何電路概念或者非常模糊也不清楚自己寫的代碼綜合出來之后是什么樣子映射到芯片中又會(huì)是什么樣子有沒有充分利用到FPGA的一些特殊資源遇到問題立刻想到的是換速度更快容量更大的FPGA器件導(dǎo)致物料成本上升更為要命的是由于不了解器件結(jié)構(gòu)更不了解與器件結(jié)構(gòu)緊密相關(guān)的設(shè)計(jì)技巧過分依賴綜合等工具工具不行自己也就束手無策導(dǎo)致問題遲遲不能解決從而嚴(yán)重影響開發(fā)周期導(dǎo)致開發(fā)成本急劇上升 目前我們的設(shè)計(jì)規(guī)模越來越龐大動(dòng)輒上百萬門幾百萬門的電路屢見不鮮同時(shí)我們所采用的器件工藝越來越先進(jìn)已經(jīng)步入深亞微米時(shí)代而在對待深亞微米的器件上我們的設(shè)計(jì)方法將不可避免地發(fā)生變化要更多地關(guān)注以前很少關(guān)注的線延時(shí)我相信ASIC設(shè)計(jì)以后也會(huì)如此此時(shí)如果我們不在設(shè)計(jì)方法設(shè)計(jì)技巧上有所提高是無法面對這些龐大的基于深亞微米技術(shù)的電路設(shè)計(jì)而且現(xiàn)在的競爭越來越激勵(lì)從節(jié)約公司成本角度出 也要求我們盡可能在比較小的器件里完成比較多的功能 本文從澄清一些錯(cuò)誤認(rèn)識開始從FPGA器件結(jié)構(gòu)出發(fā)以速度路徑延時(shí)大小和面積資源占用率為主題描述在FPGA設(shè)計(jì)過程中應(yīng)當(dāng)注意的問題和可以采用的設(shè)計(jì)技巧本文對讀者的技能基本要求是熟悉數(shù)字電路基本知識如加法器計(jì)數(shù)器RAM等熟悉基本的同步電路設(shè)計(jì)方法熟悉HDL語言對FPGA的結(jié)構(gòu)有所了解對FPGA設(shè)計(jì)流程比較了解
上傳時(shí)間： 2015-01-02
上傳用戶：refent
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