共查询到20条相似文献,搜索用时 15 毫秒
1.
Rudolf H. Mak 《Integration, the VLSI Journal》1984,2(2):149-162
We describe two techniques for the minimization of the area of a Programmable Logic Array (PLA). Based on the logic functions to be implemented an assignment of the inputs and outputs to the columns of a PLA is determined that is especially suited for row segmentation. An upper bound and a lower bound for the number of rows in the segmented PLA are derived. Furthermore, it is shown how the result can be improved upon by the duplication of some of the inputs. 相似文献
2.
It has been shown that small PLAs can be made self-testing. The proposed methods however fail to handle large functions fast or result in a large overhead. Here a method is shown that can be implemented efficiently at large PLAs. The test only needs a system clock and an initialization signal, producing a go/no-go signal after an AND plane size-dependent delay. 相似文献
3.
4.
5.
C-testable iterative logic arrays for cell-delay faults are proposed. A cell delay fault occurs if and only if an input transition can not be propagated to the cell's output through a path in the cell in a specified clock period. The set of single-path propagation, hazard-free robust tests that completely check all the paths in a cell is first derived, and then necessary conditions for sending this test set to each cell in the array and simultaneously propagating the fault effects to the primary outputs are given. Test set minimization can be solved in a similar way as for the fault cover problem. We use the pipelined array multiplier as an example, and show that it is C-testable with 214 two-pattern tests. With a small number of additional patterns, all the combinational faults can be detected pseudoexhaustive. 相似文献
6.
基于探索MSI可编程同步二进制加法计数器74LS161改变应用方向进行功能扩展的目的,采用逻辑修改的方法给出了在二进制计数的基础上实现循环码计数的设计方法,即以74LS161已有的状态输出Q3Q2Q1Q0为变量定义循环码计数器的状态输出量Q3′Q2′Q1′Q0′进行改变计数规律的设计。给出了在函数卡诺图上进行输出函数最小化求解设计方法。从现成的函数出发,实现待求函数可扩展专用集成电路的应用范围并简化循环码计数的设计过程。所述方法给出了MSI可编程计数器改变应用方向的逻辑修改方法。 相似文献
7.
8.
9.
10.
11.
12.
介绍了一种低功耗、高精度、高稳定性可编程定时器专用集成电路的设计,对其中的稳定性电路、低功耗问题进行了研究和分析。该电路的静态工作电流为7.8微安。 相似文献
13.
量子元胞自动机(quantum-dot cellular automata,QCA)可编程逻辑阵列(programma-ble logic array,PLA)结构可用于实现大规模可编程逻辑电路。分析了4种故障类型发生在PLA单元的8个区域中的影响,得出了具体的影响效果。其中,直接或间接致使隐含线和与门发生逻辑错误的故障均会导致PLA中故障所在行整行失效,其他故障只会影响故障所在的PLA单元的逻辑功能和配置,而对PLA中的其他单元没有影响。此外,基于故障分析,提出了具体的PLA故障检测方法。 相似文献
14.
15.
高频FPGA设计技术 总被引:2,自引:0,他引:2
现场可编程门阵列(FPGA)是电子领域内极为关键的技术,而大容量、高频FPGA设计则是FPGA的设计瓶颈。文章分别从节省逻辑资源、提高工作频率和创造外部环境等方面举例说明如何运用这些技术。 相似文献
16.
可编程逻辑器件作为数字逻辑电路的重要组成部分,其发展历程中体现的哲学思想、逻辑设计过程中体现的管理思想、美国对华芯片封锁背后的政治经济学等多个维度都有很丰富的思政元素值得挖掘,围绕着可编程门阵列知识点学习,对唯物辩证法、管理学、中美芯片之争等思政元素进行了分析,探索将数字逻辑电路课程学习与思政课程同向同行,协同促进学生综合素质培养 相似文献
17.
18.
19.
随着我国科学技术的不断发展,电子设计发展的数字化的程度会越来越深。在电子设计领域电子设计自动化是电子设计发展的必然趋势,电子设计自动化是目前电子设计的重要基础,同时也是在电子设计中相对重要的应用型技术,它集合了计算机技术及集成电路等技术从而从根本上提高电子设计工作的效率及质量。本文主要分析了在电子设计工作中电子设计自动化技术的应用。 相似文献
20.
Pan Zhongliang 《电子科学学刊(英文版)》2004,21(5):376-383
The single fault and multiple fault detections for multiple-valued logic circuits are studied in this paper. Firstly, it is shown that the cardinality of optimal single fault test set for fanout-free m-valued circuits with n primary inputs is not more than n + 1, for linear tree circuits is two, and for multiplication modulo circuits is two if n is an odd number or if n is an even number and m > 3, where the optimal test set of a circuit has minimal number of test vectors. Secondly, it is indicated that the cardinality of optimal multiple fault test set for linear tree circuits with n primary inputs is 1 + [n/(m - 1)], for multiplication modulo circuits is n + 1, for fanout-free circuits that consist of 2-input linear tree circuits and 2-input multiplication modulo circuits is not greater than n+ 1, where [x] denotes the smallest integer greater than or equal to x. Finally, the single fault location approaches of linear tree circuits and multiplication modulo circuits are presented, and all faults in th 相似文献