設計了一種片上系統(SoC)復位電路。該電路能對外部輸入信號進行同步化處理以抑制亞穩態,采用多級D觸發器進行濾波提升抗干擾能力,并且控制產生系統所需的復位時序以滿足軟硬件協同設計需求。同時,完成了可測性設計(DFT)?;赬ilinx spartan-6 FPGA進行了驗證。結果表明該電路可以抑制90 ?滋s以下的外部干擾信號,并能正確產生系統所需的復位信號。
上傳時間: 2014-12-29
上傳用戶:guojin_0704
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上傳時間: 2013-11-12
上傳用戶:eastimage
本資料是關于Nexys3板卡的培訓資料。Nexys 開發板是基于最新技術Spartan-6 FPGA的數字系統開發平臺。它擁有48M字節的外部存儲器(包括2個非易失性的相變存儲器),以及豐富的I/O器件和接口,可以適用于各式各樣的數字系統。 板上自帶AdeptTM高速USB2接口可以為開發板提供電源,也可以燒錄程序到FPGA,用戶數據的傳輸速率可以達到38M字節/秒。 Nexys3開發板可以通過添加一些低成本的外設Pmods (可以多達30幾個)和Vmods (最新型外設)來實現額外的功能,例如A/D和D/A轉換器,線路板,電機驅動裝置,和實現裝置等等。另外,Nexys3完全兼容所有的賽靈思工具,包括免費的WebPackTM,ChipscopeTM,EDKTM(嵌入式處理器設計套件),以及其他工具。 圖 Nexys3板卡介紹
上傳時間: 2013-10-24
上傳用戶:caiqinlin
本文是關于賽靈思Artix-7 FPGA 數據手冊:直流及開關特性的詳細介紹。 文章中也討論了以下問題: 1.全新 Artix-7 FPGA 系列有哪些主要功能和特性? Artix-7 系列提供了業界最低功耗、最低成本的 FPGA,采用了小型封裝,配合Virtex 架構增強技術,能滿足小型化產品的批量市場需求,這也正是此前 Spartan 系列 FPGA 所針對的市場領域。與 Spartan-6 FPGA 相比,Artix-7 器件的邏輯密度從 20K 到 355K 不等,不但使速度提升 30%,功耗減半,尺寸減小 50%,而且價格也降了 35%。 2.Artix-7 FPGA 系列支持哪些類型的應用和終端市場? Artix-7 FPGA 系列面向各種低成本、小型化以及低功耗的應用,包括如便攜式超聲波醫療設備、軍用通信系統、高端專業/消費類相機的 DSLR 鏡頭模塊,以及航空視頻分配系統等。
上傳時間: 2013-11-12
上傳用戶:songyue1991
通過Xilinx Spartan-6 FPGA 的Multiboot特性,允許用戶一次將多個配置文件下載入Flash中,根據不同時刻的需求,在不掉電重啟的情況下,從中選擇一個來重配置FPGA,實現不同功能,提高器件利用率,增加系統安全性,降低系統成本。
標簽: Xilinx-Spartan MultiBoot FPGA
上傳時間: 2013-10-26
上傳用戶:wpwpwlxwlx
This application note describes how to retrieve user-defined data from Xilinx configurationPROMs (XC18V00 and Platform Flash devices) after the same PROM has configured theFPGA. The method to add user-defined data to the configuration PROM file is also discussed.The reference design described in this application note can be used in any of the followingXilinx FPGA architectures: Spartan™-II, Spartan-IIE, Spartan-3, Virtex™, Virtex-E, Virtex-II,and Virtex-II Pro.
上傳時間: 2013-10-09
上傳用戶:guojin_0704
This application note describes how the existing dual-port block memories in the Spartan™-IIand Virtex™ families can be used as Quad-Port memories. This essentially involves a dataaccess time (halved) versus functionality (doubled) trade-off. The overall bandwidth of the blockmemory in terms of bits per second will remain the same.
上傳時間: 2014-01-24
上傳用戶:15527161163
Xilinx FPGAs require at least two power supplies: VCCINTfor core circuitry and VCCO for I/O interface. For the latestXilinx FPGAs, including Virtex-II Pro, Virtex-II and Spartan-3, a third auxiliary supply, VCCAUX may be needed. Inmost cases, VCCAUX can share a power supply with VCCO.The core voltages, VCCINT, for most Xilinx FPGAs, rangefrom 1.2V to 2.5V. Some mature products have 3V, 3.3Vor 5V core voltages. Table 1 shows the core voltagerequirement for most of the FPGA device families. TypicalI/O voltages (VCCO) vary from 1.2V to 3.3V. The auxiliaryvoltage VCCAUX is 2.5V for Virtex-II Pro and Spartan-3, andis 3.3V for Virtex-II.
上傳時間: 2013-10-22
上傳用戶:aeiouetla
賽靈思推出業界首款自動化精細粒度時鐘門控解決方案,該解決方案可將 Virtex®-6 和 Spartan®-6 FPGA 設計方案的動態功耗降低高達 30%。賽靈思智能時鐘門控優化可自動應用于整個設計,既無需在設計流程中添加更多新的工具或步驟,又不會改變現有邏輯或時鐘,從而避免設計修改。此外,在大多數情況下,該解決方案都能保留時序結果。
上傳時間: 2015-01-02
上傳用戶:wutong
The power of programmability gives industrial automation designers a highly efficient, cost-effective alternative to traditional motor control units (MCUs)。 The parallel-processing power, fast computational speeds, and connectivity versatility of Xilinx® FPGAs can accelerate the implementation of advanced motor control algorithms such as Field Oriented Control (FOC)。 Additionally, Xilinx devices lower costs with greater on-chip integration of system components and shorten latencies with high-performance digital signal processing (DSP) that can tackle compute-intensive functions such as PID Controller, Clark/Park transforms, and Space Vector PWM. The Xilinx Spartan®-6 FPGA Motor Control Development Kit gives designers an ideal starting point for evaluating time-saving, proven, motor-control reference designs. The kit also shortens the process of developing custom control capabilities, with integrated peripheral functions (Ethernet, PowerLink, and PCI® Express), a motor-control FPGA mezzanine card (FMC) with built-in Texas Instruments motor drivers and high-precision Delta-Sigma modulators, and prototyping support for evaluating alternative front-end circuitry.
上傳時間: 2013-10-28
上傳用戶:wujijunshi