This application note provides a detailed description of the Spartan™-3 configurationarchitecture. It explains the composition of the bitstream file and how this bitstream isinterpreted by the configuration logic to program the part. Additionally, a methodology ispresented that will guide the user through the readback process. This information can be usedfor partial reconfiguration or partial readback.
上傳時間: 2013-11-16
上傳用戶:qingdou
Express Mode uses an 8-bit wide bus path for fast configuration of Xilinx FPGAs. Thisapplication note provides information on how to perform Express configuration specifically forthe Spartan™-XL family. The Express mode signals and their associated timing are defined.The steps of Express configuration are described in detail, followed by detailed instructions thatshow how to implement the configuration circui
標簽: Spartan-XL Express XAPP FPGA
上傳時間: 2015-01-02
上傳用戶:nanxia
This application note shows how to achieve low-cost, efficient serial configuration for Spartan FPGA designs. The approachrecommended here takes advantage of unused resources in a design, thereby reducing the cost, part count, memory size,and board space associated with the serial configuration circuitry. As a result, neither processor nor PROM needs to be fullydedicated to performing Spartan configuration.In particular, information is provided on how the idle processing time of an on-board controller can be used to loadconfiguration data from an off-board source. As a result, it is possible to upgrade a Spartan design in the field by sending thebitstream over a network.
上傳時間: 2013-11-01
上傳用戶:wojiaohs
FPGA 具有輕松集成與支持新協(xié)議和新標準以及產(chǎn)品定制的能力,同時仍然可以實現(xiàn)快速的產(chǎn)品面市時間。在互聯(lián)網(wǎng)和全球市場環(huán)境中,外包制造變得越來越普遍,這使得安全變得更加重要。正如業(yè)界領(lǐng)袖出版的文章所述,反向工程、克隆、過度構(gòu)建以及篡改已經(jīng)成為主要的安全問題。據(jù)專家估計,每年因為假冒產(chǎn)品而造成的經(jīng)濟損失達數(shù)十億美元。國際反盜版聯(lián)盟表示,這些假冒產(chǎn)品威脅經(jīng)濟的發(fā)展,并且給全球的消費類市場帶來重大影響。本白皮書將確定設(shè)計安全所面臨的主要威脅,探討高級安全選擇,并且介紹Xilinx 的新型、低成本SpartanTM-3A、Spartan-3AN 和Spartan-3A DSP FPGA 如何協(xié)助保護您的產(chǎn)品和利潤。
上傳時間: 2013-10-26
上傳用戶:simonpeng
Spartan-3AN 器件帶有可以用于儲存配置數(shù)據(jù)的片上Flash 存儲器。如果在您的設(shè)計中Flash 存儲器沒有與外部相連,那么Flash 存儲器無法從I/O 引腳讀取數(shù)據(jù)。由于Flash 存儲器在FPGA 內(nèi)部,因此配置過程中Spartan-3AN 器件比特流處于隱藏狀態(tài)。這一配置成了設(shè)計安全的起點,因為無法直接從Flash 存儲器拷貝設(shè)計。
上傳時間: 2013-10-31
上傳用戶:R50974
The introduction of Spartan-3™ devices has createdmultiple changes in the evolution of embedded controldesigns and pushed processing capabilities to the “almostfreestage.” With these new FPGAs falling under $20, involume, with over 1 million system gates, and under $5for 100K gate-level units, any design with programmablelogic has a readily available 8- or 16-bit processor costingless than 75 cents and 32-bit processor for less than $1.50.
上傳時間: 2013-10-21
上傳用戶:ligi201200
Consumer display applications commonly use high-speed LVDS interfaces to transfer videodata. Spread-spectrum clocking can be used to address electromagnetic compatibility (EMC)issues within these consumer devices. This application note uses Spartan®-6 FPGAs togenerate spread-spectrum clocks using the DCM_CLKGEN primitive.
上傳時間: 2013-11-01
上傳用戶:hjkhjk
本白皮書主要介紹 Spartan®-6 FPGA 如何滿足大批量系統(tǒng)的需求。包括經(jīng)濟高效地驅(qū)動商用存儲器芯片、構(gòu)建芯片間的高性能接口、創(chuàng)新型節(jié)電模式,這些只是高性能、低功耗、低成本 Spartan-6 FPGA 解決諸多問題的一部分。
上傳時間: 2015-01-02
上傳用戶:jx_wwq
一些應(yīng)用利用 Xilinx FPGA 在每次啟動時可改變配置的能力,根據(jù)所需來改變 FPGA 的功能。Xilinx Platform Flash XCFxxP PROM 的設(shè)計修訂 (Design Revisioning) 功能,允許用戶在單個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 中存儲的多達四個不同的修訂版本之間進行動態(tài)切換。多重啟動或從多個設(shè)計修訂進行動態(tài)重新配置的能力,與 Spartan™-3E FPGA 和第三方并行 flashPROM 一起使用時所提供的 MultiBoot 選項相似。本應(yīng)用指南將進一步說明 Platform Flash PROM 如何提供附加選項來增強配置失敗時的安全性,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)計和更快速的配置加載。本應(yīng)用指南還詳細地介紹了一個包含 VHDL 源代碼的參考設(shè)計。
上傳時間: 2013-10-10
上傳用戶:wangcehnglin
摘要:本應(yīng)用指南提供了一種方法可從3.3V接口對Spartan™-3和Spartan-3L FPGA進行配置。它針對每種配置模式都提供了一組經(jīng)驗證的連接框圖。這些框圖是完整且可直接使用的解決方案。
標簽: Spartan FPGA 3.3 應(yīng)用指南
上傳時間: 2015-01-02
上傳用戶:ch3ch2oh
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