基于Altera公司FPGA芯片EP2C8Q208,嵌入MC8051 IP Core,用C語言對MC8051 IP Core進行編程,以其作為控制核心,實現系統控制。在FPGA芯片中,利用Verilog HDL語言進行編程,設計了以MC8051 IP Core為核心的控制模塊、計數模塊、鎖存模塊和LCD顯示模塊等幾部分,實現了頻率的自動測量,測量范圍為0.1Hz~50MHz,測量誤差0.01%。并實現測頻率、周期、占空比等功能。
上傳時間: 2013-10-27
上傳用戶:潛水的三貢
This white paper discusses how market trends, the need for increased productivity, and new legislation have accelerated the use of safety systems in industrial machinery. This TÜV-qualified FPGA design methodology is changing the paradigms of safety designs and will greatly reduce development effort, system complexity, and time to market. This allows FPGA users to design their own customized safety controllers and provides a significant competitive advantage over traditional microcontroller or ASIC-based designs. Introduction The basic motivation of deploying functional safety systems is to ensure safe operation as well as safe behavior in cases of failure. Examples of functional safety systems include train brakes, proximity sensors for hazardous areas around machines such as fast-moving robots, and distributed control systems in process automation equipment such as those used in petrochemical plants. The International Electrotechnical Commission’s standard, IEC 61508: “Functional safety of electrical/electronic/programmable electronic safety-related systems,” is understood as the standard for designing safety systems for electrical, electronic, and programmable electronic (E/E/PE) equipment. This standard was developed in the mid-1980s and has been revised several times to cover the technical advances in various industries. In addition, derivative standards have been developed for specific markets and applications that prescribe the particular requirements on functional safety systems in these industry applications. Example applications include process automation (IEC 61511), machine automation (IEC 62061), transportation (railway EN 50128), medical (IEC 62304), automotive (ISO 26262), power generation, distribution, and transportation. 圖Figure 1. Local Safety System
上傳時間: 2013-11-14
上傳用戶:zoudejile
用Verilog HDL實現I2C總線功能
上傳時間: 2013-11-05
上傳用戶:sssl
PADS高級教程,PADS BlazeRouter功能簡介之交互式高速PCB設計。 ? BlazeRouter設計環境
標簽: BlazeRouter PADS PCB 交互式
上傳時間: 2013-11-12
上傳用戶:hn891122
altium designer高級功能介紹
上傳時間: 2013-11-03
上傳用戶:wyc199288
用FPGA設計多功能數字鐘
上傳時間: 2013-10-27
上傳用戶:ommshaggar
一些應用利用 Xilinx FPGA 在每次啟動時可改變配置的能力,根據所需來改變 FPGA 的功能。Xilinx Platform Flash XCFxxP PROM 的設計修訂 (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切換。多重啟動或從多個設計修訂進行動態重新配置的能力,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量和板面積。此外,Platform Flash PROM 還為用戶提供其他優勢:iMPACT 編程支持、單一供應商解決方案、低成本板設計和更快速的配置加載。本應用指南還詳細地介紹了一個包含 VHDL 源代碼的參考設計。
上傳時間: 2013-10-10
上傳用戶:wangcehnglin
隨著PCB設計復雜程度的不斷提高,設計工程師對 EDA工具在交互性和處理復雜層次化設計功能的要求也越來越高。Cadence Design Systems, Inc. 作為世界第一的EDA工具供應商,在這些方面一直為用戶提供業界領先的解決方案。在 Concept-HDL15.0中,這些功能又得到了大度地提升。首先,Concept-HDL15.0,提供了交互式全局屬性修改刪除,以及全局器件替換的圖形化工作界面。在這些全新的工作環境中,用戶可以在圖紙,設計,工程不同的級別上對器件,以及器件/線網的屬性進行全局性的編輯。
上傳時間: 2013-11-12
上傳用戶:ANRAN
15.2 已經加入了有關貫孔及銲點的Z軸延遲計算功能. 先開啟 Setup - Constraints - Electrical constraint sets 下的 DRC 選項. 點選 Electrical Constraints dialog box 下 Options 頁面 勾選 Z-Axis delay欄.
上傳時間: 2013-11-12
上傳用戶:Late_Li
本文利用Verilog HDL 語言自頂向下的設計方法設計多功能數字鐘,突出了其作為硬件描述語言的良好的可讀性、可移植性和易理解等優點,并通過Altera QuartusⅡ 4.1 和ModelSim SE 6.0 完成綜合、仿真。此程序通過下載到FPGA 芯片后,可應用于實際的數字鐘顯示中。 關鍵詞:Verilog HDL;硬件描述語言;FPGA Abstract: In this paper, the process of designing multifunctional digital clock by the Verilog HDL top-down design method is presented, which has shown the readability, portability and easily understanding of Verilog HDL as a hard description language. Circuit synthesis and simulation are performed by Altera QuartusⅡ 4.1 and ModelSim SE 6.0. The program can be used in the truly digital clock display by downloading to the FPGA chip. Keywords: Verilog HDL;hardware description language;FPGA
上傳時間: 2013-11-10
上傳用戶:hz07104032