Applying power to a standard logic chip, SRAM, or EPROM, usually results in output pinstracking the applied voltage as it rises. ProgRAMmable logic attempts to emulate that behavior,but physics forbids perfect emulation, due to the device programmability. It requires care tospecify the pin behavior, because ProgRAMmable parts encounter unknown variables – yourdesign and your power environment.
上傳時間： 2013-11-24
上傳用戶：253189838
The Virtex-4 features, such as the ProgRAMmable IDELAY and built-in FIFO support, simplifythe bridging of a high-speed, PCI-X core to large amounts of DDR-SDRAM memory. Onechallenge is meeting the PCI-X target initial latency specification. PCI-X Protocol Addendum tothe PCI Local Bus Specification Revision 2.0a ([Ref 6]) dictates that when a target signals adata transfer, "the target must do so within 16 clocks of the assertion of FRAME#." PCItermination transactions, such as Split Response/Complete, are commonly used to meet thelatency specifications. This method adds complexity to the design, as well as additional systemlatency. Another solution is to increase the ratio of the memory frequency to the PCI-X busfrequency. However, this solution increases the required power and clock resource usage.
上傳時間： 2013-11-24
上傳用戶：18707733937
Xilinx Next Generation 28 nm FPGA Technology Overview Xilinx has chosen 28 nm high-κ metal gate (HKMG) highperformance,low-power process technology and combined it with a new unified ASMBL™ architecture to create a new generation of FPGAs that offer lower power and higher performance. These devices enable unprecedented levels of integration and bandwidth and provide system architects and designers a fully ProgRAMmable alternative to ASSPs and ASICs.
上傳時間： 2013-12-07
上傳用戶：bruce
WP369可擴展式處理平臺-各種嵌入式系統的理想解決方案 ：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.
上傳時間： 2013-10-18
上傳用戶：cursor
The Xilinx Zynq-7000 Extensible Processing Platform (EPP) redefines the possibilities for embedded systems, giving system and software architects and developers a flexible platform to launch their new solutions and traditional ASIC and ASSP users an alternative that aligns with today’s ProgRAMmable imperative. The new class of product elegantly combines an industrystandard ARMprocessor-based system with Xilinx 28nm ProgRAMmable logic—in a single device. The processor boots first, prior to configuration of the ProgRAMmable logic. This, along with a streamlined workflow, saves time and effort and lets software developers and hardware designers start development simultaneously.
上傳時間： 2013-10-09
上傳用戶：evil
Field ProgRAMmable Gate Arrays (FPGAs) are becoming a critical part of every system design. Many vendors offer many different architectures and processes. Which one is right for your design? How do you design one of these so that it works correctly and functions as you expect in your entire system? These are the questions that this paper sets out to answer.
上傳時間： 2013-10-22
上傳用戶：lmq0059
教學提示：可編程序控制器(ProgRAMmable Logic Controller,簡稱PLC)是以微處理器為核心，綜合計算機技術、自動控制技術和通信技術發展起來的一種新型工業自動控制裝置。隨著大規模、超大規模集成電路技術和數字通信技術的進步和發展，PLC技術不斷提高，在工業生產中獲得極其廣泛的應用。教學要求：本章讓學生了解PLC及其控制系統的基本知識，重點了解PLC的技術特點、類型以及發展概況。第一章 可編程序控制器概論1.1 PLC的定義及特點1.1.1 PLC的產生及定義1.1.2 PLC的特點1.1.3 PLC的分類1.2 PLC的發展趨勢
標簽： 可編程序控制器
上傳時間： 2013-10-28
上傳用戶：bnfm
a8259 可編程中斷控制 altera提供 The a8259 is designed to simplify the implementation of the interrupt interface in 8088 and 8086 based microcomputer systems. The device is known as a ProgRAMmable interrupt controller. The a8259 receives and prioritizes up to 8 interrupts, and in the cascade mode, this can be expanded up to 64 interrupts. An asynchronous reset and a clock input have been added to improve operation and reliability.
上傳時間： 2015-01-02
上傳用戶：panpanpan
xilinx設計可以快速適應各種發展標準和處理要求，從而可以改進分析能力來滿足市場需求，同時可以在最初部署后的很長一段時間內添加各種特性和功能。 Xilinx All ProgRAMmable FPGA 和基于 SoC 的解決方案和平臺可充分滿足當今磁場定向控制 （FOC） 等復雜控制算法所提出的苛刻的時序和性能要求。 Xilinx 工業成像解決方案實現了快速原型開發，簡化了開發工作，極大地縮短了高分辨率視頻會議、視頻監控和機器視覺系統的面市時間。
上傳時間： 2013-11-17
上傳用戶：jhs541019
Abstract: As industrial control systems (ICSs) have become increasingly connected and use more off-the-shelfcomponents, new vulnerabilities to cyber attacks have emerged. This tutorial looks at three types of ICSs:ProgRAMmable logic controllers (PLCs), supervisory control and data acquisition (SCADA) systems, anddistributed control systems (DCSs), and then discusses security issues and remedies. This document alsoexplains the benefits and limitations of two cryptographic solutions (digital signatures and encryption) andelaborates on the reasons for using security ICs in an ICS to support cryptography.
上傳時間： 2013-10-09
上傳用戶：woshinimiaoye
