IBIS 模型在做类似板级SI 仿真得到广泛应用。在做仿真的初级阶段,经常对于ibis 模型的描述有些疑问,只知道把模型拿来转换为软件所支持的格式或者直接使用,而对于IBIS 模型里面的数据描述什么都不算很明白,因此下面的一些描述是整理出来的一点对于ibis 的基本理解。在此引用很多presention来描述ibis 内容(有的照抄过来,阿弥陀佛,不要说抄袭,只不过习惯信手拈来说明一些问题),仅此向如muranyi 等ibis 先驱者致敬。本文难免有些错误或者考虑不周,随时欢迎进行讨论并对其进行修改!IBIS 模型的一些基本概念IBIS 这个词是Input/Output buffer information specification 的缩写。本文是基于IBIS ver3.2 所撰写出来(www.eigroup.org/IBIS/可下载到各种版本spec),ver4.2增加很多新特性,由于在目前设计中没用到不予以讨论。。。在业界经常会把spice 模型描述为transistor model 是因为它描述很多电路细节问题。而把ibis 模型描述为behavioral model 是因为它并不象spice 模型那样描述电路的构成,IBIS 模型描述的只不过是电路的一种外在表现,象个黑匣子一样,输入什么然后就得到输出结果,而不需要了解里面驱动或者接收的电路构成。因此有所谓的garbage in, garbage out,ibis 模型的仿真精度依赖于模型的准确度以及考虑的worse case,因此无论你的模型如何精确而考虑的worse case 不周全或者你考虑的worse case 如何周全而模型不精确,都是得不到较好的仿真精度。
上传时间: 2013-10-16
上传用户:zhouli
In this paper, we discuss efficient coding and design styles using verilog. This can beimmensely helpful for any digital designer initiating designs. Here, we address different problems rangingfrom RTL-Gate Level simulation mismatch to race conditions in writing behavioral models. All theseproblems are accompanied by an example to have a better idea, and these can be taken care off if thesecoding guidelines are followed. Discussion of all the techniques is beyond the scope of this paper, however,here we try to cover a few of them.
标签: Efficient Verilog Digital Coding
上传时间: 2013-11-23
上传用户:我干你啊
Facilitating entry into drug treatment among injection drug users referred from a needle exchange program_ Results from a community-based behavioral intervention trial.rar
标签: drug Facilitating injection treatment
上传时间: 2013-12-21
上传用户:jing911003
Expert Choice represents a significant contribution to the decision making process 工t assists a decision maker in solving complex problems involving many criteria and several courses of action . An Expert Choice solution to a problem reflects the expertise of the decision maker , not the computer . behavioral scientists have spent many years studying the human mind and how it makes decisions . They have found that humans are influenced by their previous experiences and this causes them to have biases . Basic instincts , preferences and environmental factors also play key roles in how we analyze data and make decisions . There 15 way to remove these factors from human decision making , nor would we necessarily want to , but as the problems of our world become more and more complex , it 15 necessary for us to employ a framework to help make more logical and less biased decisions while still taking our feelings and intuition into consideration .
标签: contribution significant represents decision
上传时间: 2015-06-02
上传用户:gmh1314
软件开发环境:ISE 7.1i 仿真环境:ModelSim SE 6.0 1. 这个实例实现通过ModelSim工具实现一个具有“百分秒,秒,分”计时功能的数字跑表; 2. 工程在project文件夹中,双击paobiao.ise文件打开工程; 3. 源文件在rtl文件夹中,paobiao.v为设计文件,paobiao_tb.tbw是仿真测试文件; 4. 打开工程后,在工程浏览器中选择paobiao_tb.tbw,在Process View中双击“Simulation behavioral Model”选项,若正确安装ModelSim,系统将自动打开ModelSim进行行为仿真,运行仿真即可得到仿真结果。
上传时间: 2016-10-04
上传用户:dbs012280
软件开发环境:ISE 7.1i 仿真环境:ISE Simulator 1. 这个实例实现通过ISE Simulator工具实现一个具有两个方向共八个灯的交通灯控制器; 2. 工程在project文件夹中,双击traffic.ise文件打开工程; 3. 源文件在rtl文件夹中,traffic.v为设计文件,traffic_tb.tbw是仿真波形文件; 4. 打开工程后,在工程浏览器中选择traffic_tb.tbw,在Process View中双击“Simulation behavioral Model”选项,进行行为仿真,即可得到仿真结果。
上传时间: 2014-01-25
上传用户:思琦琦
Verilog Overview n Basic Structure of a Verilog Model n Components of a Verilog Module – Ports – Data Types – Assigning Values and Numbers – Operators – behavioral Modeling • Continuous Assignments • Procedural Blocks – Structural Modeling n Summary: Verilog Environment
标签: Verilog Components Structure Overview
上传时间: 2017-02-18
上传用户:xinyuzhiqiwuwu
使用函数实现简单的八位处理器 软件开发环境:ISE 7.1i 仿真环境:ISE Simulator 1. 这个实例实现通过ISE Simulator工具实现一个可以进行两个八位操作数四种操作的简单处理器; 2. 工程在project文件夹中,双击mpc.ise文件打开工程; 3. 源文件在rtl文件夹中,mpc.v为设计文件,mpc_tb.tbw是仿真波形文件; 4. 打开工程后,在工程浏览器中选择mpc_tb.tbw,在Process View中双击“Simulation behavioral Model”选项,进行行为仿真,即可得到仿真结果。
上传时间: 2014-01-06
上传用户:mhp0114
这是alu32位在单片机上的编码程序,已经经过了iverilog和modulism的测试
标签: de1soc上alu编码
上传时间: 2015-05-12
上传用户:yq-kjj
HDMI-Definition Multimedia Interface Specification Version 2.0This document constitutes the Version 2.0 specification for the High-Definition Multimedia Interface (HDMI Specification Version 2.0). This Specification incorporates HDMI Specification Version 1.4b by reference and defines additional and improved functionality. Mechanical, behavioral, and protocol requirements necessary for compliance are described for Sources, Sinks, Repeaters, and Cables.
标签: hdmi
上传时间: 2022-04-22
上传用户: