可编程逻辑器件在数字系统中的应用

介绍了可编程逻辑器件在数字信号处理系统中的应用。并运用VHDL语言对采用Lattice公司的ispLS11032E可编辑逻辑器件所构成的乘法器的结构、原理及各位加法器的VHDL作了详细的描述。该乘法器的最大特点是节省芯片资源,而且其运算速度取决于输入的时钟频率。     

复杂可编程逻辑器件在数字给定中的应用

介绍了一种基于复杂可编程逻辑器件的数字给定单元的设计方案。该方案在原有电路基础上，采用了ALTERA公司的MAX7000系列器件，从而节省了元件数目，简化了电路设计，可满足现代电路日益向高集成度方向发展的需求。     

可编程逻辑器件实现LED视频显示中的数字—时间转换

文章介绍了LED视频显示中的数字 时间转换技术 ,提出一种特殊地址发生器控制的帧存电路 ,该部分由可编程逻辑器件实现 ,可方便实现数字 时间转换。     

可编程逻辑控制器在机顶盒中的应用

机顶盒市场概览 机顶盒市场正经历着前所未有的快速增长,预计在２００２年以前每年的需求量都将以百万台的数量级增长。 目前机顶盒市场依据网络类型来分有三大应用市场：卫星电视、有线电视和天线电视。除按电视信号发射系统划分外,机顶盒还可按功能不同分为低端、中端和高端。其中：低端机顶盒可将解码后的音频和视频输出到模拟电视或数字电视上;中端机顶盒加入了有限的交互性,可以实现交互式广告和节目安排程序;高端机顶盒可实现高水平的交互功能,如网页浏览和硬盘视频存贮。 机顶盒市场是一个变化快、对成本异常敏感的市场。为了…     

可编程逻辑与数字IC

在1999年可编程逻辑大举入侵以前ASIC的领地。究其原因,不仅是因为包含的门数迅速增加,也因为芯片上的硬连线功能与可编程逻辑相结合,以及在开发芯片的专门软件方面取得长足进展。 在99年初,QuickLogic公司(位于加州Sunnyvale市)推出了一种基于反熔丝的FQGA产品QL5032,在它上     

可编程逻辑器件在LED显示屏中的应用

介绍了逻辑可编程器件ispLS11032E在实现一个单色异步屏中的应用，并给出了其在系统中实现逻辑所用的原理图及仿真结果，仿真和试验结果均表明，ispLSI1032E灵活及方便地实现了系统所需要的信号转换，大大缩短电子系统设计周期，简化了工作流程，降低了生产成本。     

可编程逻辑控制器在电子陶瓷窑炉中的应用

介绍了可编程逻辑控制器(PLC)的构成及技术优势,阐述了PLC在电子陶瓷的烧成窑炉中的应用,基于信息功能陶瓷的工艺要求,重点分析了PLC在微波烧结控制技术中的技术特征及独特的功能。     

可编程逻辑器件在蓝牙系统中的应用

蓝牙系统结构 为讨论蓝牙系统划分,首先需要回顾一下这一技术所需要的各种功能。蓝牙结构将其功能划分为如图1所示的5层。这些层大致与OSI(开放系统互连)网络模型相对应,并且完成同样的目的:将通信过程从逻辑上划分为更多更详细的层。OSI模型非常成功,很多应用都模仿了OSI模型,因为它能够给出一个设计人员容易使用的模块化直观结构。     

可编程逻辑器件在定时控制电路中的应用

介绍了用ＩＳＰ可编程逻辑器件设计的一种器件少，可靠性高，实用性强的广告灯箱定时控制电路，详细阐述了其设计思路，硬件原理及ＩＳＰ可编程逻辑器件的使用技术。     

可编程逻辑在蓝牙HCI桥中的应用

今年底将会推出蓝牙标准的新版本,将提供更高的带宽和更大的覆盖范围,因此可以预计蓝牙技术支持的应用范围会进一步扩展.这也意味着不仅消费电子或计算机外设会采用蓝牙进行通信,许多其它的家用和办公电器,甚至工业设备也会采用蓝牙技术.因此众多的现有电子设备都需要支持或利用蓝牙. 　　……     

可编程数字化调制器

数字调制解调技术是实现数字移动通信的关键技术之一,它是决定一个系统的频谱利用率和影响设备体积的主要因素。本文介绍了一种灵活、先进、通用性强的可编程数字化调制器,可用于扩频通信及其它通信系统中。     

Programmable logic array optimization techniques

The programmable logic array (PLA) has become a convenient logic element in digital system design. This paper attempts to solve three problems : (i) minimization of the number of input variables (pins) of the functions, (ii) minimization of the number of product. terms (AND-gates) needed, and (iii) the sufficient conditions under which a variable can lie eliminated without, increasing the number of product terms needed by a function. A branch-and-bound algorithm and a ‘ greedy ’ heuristic are developed for the minimization problems.     

可编程通用阵列逻辑电路技术

本文介绍最新出现的可编程通用陈列逻辑(GAL)的特点、原理、编程及其应用.它的出现推动了微电子和电讯技术的发展,进一步影响了系统结构设计方法.     

可编程光学二值双轨逻辑门

基于双轨逻辑,本文提出一种可级联的并行二值逻辑门。所有十六种二值逻辑运算可以采用偏振半波相延编程来实现。也提出了用电光晶体实现实时编程的方法。本文中给出了实验结果。     

可编程实时光电混合阈值逻辑处理器

提出一种可编程实时光电混合阈值逻辑处理器,讨论了该处理器在数字光计算及光信息处理中的应用。     

Programmable digital vehicle control system

The programmable digital vehicle control system or PDVCS is based upon the Intel 8080A microprocessor and is designed to replace the hardwired discrete components traditionally used in the on-board control of automated rapid transit vehicles. Although designed specifically for the advanced group rapid transit (AGRT) system under development by the Boeing Company, with funding by the Department of Transportation, the PDVCS can easily be adapted for use in any automated transit system. A breadboard PDVCS has been programmed to perform the basic AGRT longitudinal control system functions, including closed-loop emergency braking, and has been subjected to closed-loop laboratory testing. Prototype tachometers and a seventh-order nonlinear analog computer simulation of motor, brake, and vehicle dynamics were used to close the control loop for test purposes; command scenarios were input manually. The test results demonstrate the feasibility of microcomputers in on-board vehicle control and show their capability to meet the performance requirements associated with a short headway (3 s) system.     

Programmable logic device-based interface for resonant sensor arrays

A simple and successful approach for signal frequency estimation is presented. If applied to multichannel measurements (i.e. resonant sensors arrays) this method allows smaller implementation compared to classical techniques (e.g. CET). A prototype has been developed to evaluate the algorithm and the measured data agree with predicted results.     

SoC新技术--可编程逻辑IP核

随着半导体技术的飞速发展,单个硅片上的集成度越来越高,SoC(System-On-a-Chip）已成为IC(Integrated Circuit）设计技术的主流。由于市场竞争的日益激烈,TTM(Time to Market）已成为一个非常重要的因素,直接影响到产品的市场份额和开发商的利润。如何更快、更有效的完成SoC设计逐渐成为人们关注的焦点。可编程逻辑IP核技术的出现有效的缩短了SoC的设计周期并使得芯片设计更具灵活性。本文将对这种技术进行详细的介绍。     

QMOS digital logic circuit design

This paper presents results of work to explore the feasibility of using resonant tunnelling diodes (RTDs) and conventional MOSFETs for the development of digital logic circuits. Based on the use of RTDs and MOSFETs, two different logic design styles—fixed pull-down and fixed pull-up—are proposed and evaluated. Fixed pull-up gates perform better than their CMOS counterparts with similar device sizes. Since the proposed fixed pull-down style avoids the use of series MOSFETs, for large fan-in gates it yields significantly better performance than the corresponding CMOS gates.     

Programmable logic circuits for functional integrated smart plastic systems

In this paper, we present a functional integrated plastic system. We have fabricated arrays of organic thin-film transistors (OTFTs) and printed electronic components driving an electrophoretic ink display up to 70 mm by 70 mm on a single flexible transparent plastic foil. Transistor arrays were quickly and reliably configured for different logic functions by an additional process step of inkjet printing conductive silver wires and poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) resistors between transistors or between logic blocks. Among the circuit functions and features demonstrated on the arrays are a 7-stage ring oscillator, a D-type flip-flop memory element, a 2:4 demultiplexer, a programmable array logic device (PAL), and printed wires and resistors. Touch input sensors were also printed, thus only external batteries were required for a complete electronic subsystem. The PAL featured 8 inputs, 8 outputs, 32 product terms, and had 1260 p-type polymer transistors in a 3-metal process using diode-load logic. To the best of our knowledge, this is the first time that a PAL concept with organic transistors has been demonstrated, and also the first time that organic transistors have been used as the control logic for a flexible display which have both been integrated on to a single plastic substrate. The versatility afforded by the additive inkjet printing process is well suited to organic programmable logic on plastic substrates, in effect, making flexible organic electronics more flexible.