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ASIC/VLSI Basic Concept

ASCI/VLSI Basic Concept blog try to collect basic concept for ASIC IC Designs, including front-end and back-end. Wednesday, September 7, 2011. VCD File In Power Analysis. VCD Stands for Value Change Dump, VCD file is used for verilog simulation and power analysis. VCD file is an ASCII format file include waveform information, this file is used by Verilog simulators. VCD file fromat is defined by IEEE Standard 1364. Tuesday, July 5, 2011. ICC procedure: dump layout window snapshot. Get placement utilizati...

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ASCI/VLSI Basic Concept blog try to collect basic concept for ASIC IC Designs, including front-end and back-end. Wednesday, September 7, 2011. VCD File In Power Analysis. VCD Stands for Value Change Dump, VCD file is used for verilog simulation and power analysis. VCD file is an ASCII format file include waveform information, this file is used by Verilog simulators. VCD file fromat is defined by IEEE Standard 1364. Tuesday, July 5, 2011. ICC procedure: dump layout window snapshot. Get placement utilizati...

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ASIC/VLSI Basic Concept | vlsi-concept.blogspot.com Reviews

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ASCI/VLSI Basic Concept blog try to collect basic concept for ASIC IC Designs, including front-end and back-end. Wednesday, September 7, 2011. VCD File In Power Analysis. VCD Stands for Value Change Dump, VCD file is used for verilog simulation and power analysis. VCD file is an ASCII format file include waveform information, this file is used by Verilog simulators. VCD file fromat is defined by IEEE Standard 1364. Tuesday, July 5, 2011. ICC procedure: dump layout window snapshot. Get placement utilizati...

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vlsi-concept.blogspot.com

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ASIC/VLSI Basic Concept: Gate-Array-Backfill (GBF) Cells

http://vlsi-concept.blogspot.com/2011/07/gate-array-backfill-gbf-cells.html

ASCI/VLSI Basic Concept blog try to collect basic concept for ASIC IC Designs, including front-end and back-end. Sunday, July 3, 2011. Nearly every chip being produced today faces at least one respin in the life of the project. Multiple respins are not uncommon. The financial pain of these engineering potholes can be alleviated by changing as few layers in the design as possible- two layers changed in a 10 layer design is a great savings over an all-layer respin. There are two major downsides to using sp...

2

ASIC/VLSI Basic Concept: January 2009

http://vlsi-concept.blogspot.com/2009_01_01_archive.html

ASCI/VLSI Basic Concept blog try to collect basic concept for ASIC IC Designs, including front-end and back-end. Saturday, January 31, 2009. Interconnect Technology File (ITF). ITF stands for Interconnect Technology File. It contains a description of the process cross-section and connectivity section. It describes the thicknesses and physical attributes of the conductor and dielectric layers. It used to extract RC value for the chip. It can be used to generate TLU TLUPlus files. SW T and TW T:. Emulation...

3

ASIC/VLSI Basic Concept: February 2009

http://vlsi-concept.blogspot.com/2009_02_01_archive.html

ASCI/VLSI Basic Concept blog try to collect basic concept for ASIC IC Designs, including front-end and back-end. Tuesday, February 24, 2009. Net delay in ICC timing report. Net delay in ICC timing report is displayed in the input pin connected to the net. U3249/y (buf d10w) 20.3900 42.7837 86.3139 r. N3002 (net) 1 11.0479 0.0000. U3250/a (buf d2m hvt) 20.3900 0.4279. We can see the net delay using report delay calculation is not 0. Icc shell report delay calculation -from U3249/y -to U3250/a. Design : * *.

4

ASIC/VLSI Basic Concept: July 2011

http://vlsi-concept.blogspot.com/2011_07_01_archive.html

ASCI/VLSI Basic Concept blog try to collect basic concept for ASIC IC Designs, including front-end and back-end. Tuesday, July 5, 2011. ICC procedure: dump layout window snapshot. Proc dump gif { filename } {. Gui set setting -window [gui get current window -types Layout -mru]. Setting viewshot -value ${filename}.bmp. Exec convert ${filename}.bmp ${filename}.gif. File delete ${filename}.bmp. Select routing between two pins:. Write flat verilog netlist:. Change names -hierarchy -rules verilog. Skip route ...

5

ASIC/VLSI Basic Concept: March 2009

http://vlsi-concept.blogspot.com/2009_03_01_archive.html

ASCI/VLSI Basic Concept blog try to collect basic concept for ASIC IC Designs, including front-end and back-end. Thursday, March 19, 2009. Formality Check Basic Flow. Inital v 3454 200.v. Post cbt v post cbt.v. Top module module 3454. Read db ./lib/MW/umc13sp/LM/scmetro umcl130e sp ss 1p08v 125c.db. Set top $top module. I $post cbt v. Set top $top module. Monday, March 16, 2009. ILM basic flow using ICC. Open mw cel top design. Create plan groups sub module. Commit fp plan groups sub module.

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keeppoo.blogspot.com

Donghua World: 七月 2008

http://keeppoo.blogspot.com/2008_07_01_archive.html

由于国内已经无法访问blogspot，东华小屋搬家至：. Http:/ www.truevue.org/. 星期四, 七月 24, 2008. Conn = new com("ADODB.Connection");. Connstr = "DRIVER={Microsoft Access Driver (*.mdb)}; DBQ=". realpath("data/db.mdb");. Rs = new com("ADODB.RecordSet");. Rs- Open("select * from szd t",$conn,1,1);. F = $rs- Fields(1);. Echo $f- value;. 使用apache 实现伪静态url （ url rewrite）. RewriteRule thread-threadid-(.*) .htm$ thread.php? 订阅：帖子 (Atom). 由于国内已经无法访问blogspot，东华小屋搬家至：. Http:/ www.truevue.org/.

keeppoo.blogspot.com

Donghua World: 三月 2008

http://keeppoo.blogspot.com/2008_03_01_archive.html

由于国内已经无法访问blogspot，东华小屋搬家至：. Http:/ www.truevue.org/. 星期三, 三月 12, 2008. CAPTCHA项目是Completely Automated Public Turing Test to Tell Computers and Humans Apart (全自动区分计算机和人类的图灵测试)的简称，已由卡内基梅隆大学注册商标。 CAPTCHA的目的是区分计算机和人类的一种程序算法，这种程序必须能生成并评价人类能很容易通过但计算机却通不过的测试。这个要求本身就是悖论，因为这意味着一个CAPTCHA必须能生成一个它自己不能通过的测试。人类能够比较容易识别图片中的字母，但如果编写计算机程序，难度就非常大了。按照Lenore Blum的说法，任何的图片中的内容都能被识别，不存在一种计算程序生成的图片不能被计算机程序识别出来。于是，比赛开始了，有人站到Captcha一方，有人站到破译Captcha的一方. Captcha项目： http:/ www.captcha.net/. Http:/ sam.zoy.org/pwntcha/.

keeppoo.blogspot.com

Donghua World: 六月 2009

http://keeppoo.blogspot.com/2009_06_01_archive.html

由于国内已经无法访问blogspot，东华小屋搬家至：. Http:/ www.truevue.org/. 星期二, 六月 16, 2009. 上海出了个火车票网上订票系统，网址为 http:/ shz-shrail.com.cn/. 我来弄个火车车次查询系统，赶了好几天，终于把系统给完成了， http:/ shz-shrail.net.cn/. 发文庆祝一下，功能已经完成，还有页面需要美工。订阅：帖子 (Atom). 由于国内已经无法访问blogspot，东华小屋搬家至：. Http:/ www.truevue.org/.

keeppoo.blogspot.com

Donghua World: 二月 2010

http://keeppoo.blogspot.com/2010_02_01_archive.html

由于国内已经无法访问blogspot，东华小屋搬家至：. Http:/ www.truevue.org/. 星期日, 二月 21, 2010. Http:/ www.truevue.org/. 订阅：帖子 (Atom). 由于国内已经无法访问blogspot，东华小屋搬家至：. Http:/ www.truevue.org/.

keeppoo.blogspot.com

Donghua World: 一月 2008

http://keeppoo.blogspot.com/2008_01_01_archive.html

由于国内已经无法访问blogspot，东华小屋搬家至：. Http:/ www.truevue.org/. 星期六, 一月 26, 2008. PythonClub.org final release. Http:/ www.pythonclub.org/. Welcome all to visit the site. 星期五, 一月 25, 2008. Http:/ www.gpmems.com/. 星期三, 一月 23, 2008. Rxvt ctrl s and ctrl q. Ctrl-q and ctrl-s are used for flow control. You can press ctrl-q afterwards if youve pressed ctrl-s to stop the output. You can also try stty -ixon, this may disable the flow control on linux. 星期二, 一月 22, 2008. Change the following line to. 星期日, 一月 20, 2008.

keeppoo.blogspot.com

Donghua World: 九月 2008

http://keeppoo.blogspot.com/2008_09_01_archive.html

由于国内已经无法访问blogspot，东华小屋搬家至：. Http:/ www.truevue.org/. 星期二, 九月 30, 2008. S/ / =line(".")." "/. S/ / =printf('%4s ',line('.'). 星期日, 九月 28, 2008. 刚刚收到一条短信，说免费赠送139移动邮箱，可以把每个月的移动账单发到邮箱。一直以来搞不清移动的收费，觉得糊里糊涂的，还好我每个月开销不大。不过既然有免费的那就用一下吧。感觉还不错，不知道它的账单是否详细，等收到第一个账单再来评一下吧。可以去 http:/ www.139.com. 今天去拿了 8月份的钱，估计是本年度最后一次拿钱了。从去年7，8月开始弄blogger，到现在一年整了，所有的blogger都以失败告终。不过赚到了第一桶，现在有域名，有空间，下面开始好好干，xixi。重拾 keepoo.blogspot.com. 今天又把 http:/ keepoo.blogspot.com 拿出来了。订阅：帖子 (Atom). Http:/ www.truevue.org/.

keeppoo.blogspot.com

Donghua World: 二月 2008

http://keeppoo.blogspot.com/2008_02_01_archive.html

由于国内已经无法访问blogspot，东华小屋搬家至：. Http:/ www.truevue.org/. 星期三, 二月 13, 2008. Source / coupon code gdp0210m. This special 30% OFF* sale expires February 29, 2008. So grab one name, grab 100 – theres no limit to the number, but there is a limit to the time! This special 30% OFF* sale expires February 29, 2008. So start shopping now! And dont forget that you can lock in these savings for up to 10 years with our multi-year registration option. Order online at GoDaddy.com or call 1-480-505-8821 today!

keeppoo.blogspot.com

Donghua World: 十月 2008

http://keeppoo.blogspot.com/2008_10_01_archive.html

由于国内已经无法访问blogspot，东华小屋搬家至：. Http:/ www.truevue.org/. 星期五, 十月 31, 2008. Sed r 命令，将文件内容插入目标文件. Sed 的r 命令可以读入一个文件，将此文件插入需要位置：. Sed -e "/place pattern need insert target file/r target file name" you file name. 星期二, 十月 28, 2008. 我们知道，在tcl中expr可以用来计算加减乘除等运算，如：. Set c [expr $a/$b];. 除了标准操作符、-、*、/之外，还可以为expr提供几个能够使它执行其他数学操作的选项。expr命令的基本语法是：. Set b [expr pow($a,3)];. 这些命令产生的输出结果为8.0，即2的3次幕的值。星期日, 十月 26, 2008. 现在网络流行的视频播放都是同过flash来播放flv文件，想得到视频文件的链接地址，从而下载视频文件那么需要对flash文件进行反编译。星期五, 十月 24, 2008. Ctrl T # Swap ...

keeppoo.blogspot.com

Donghua World: 十二月 2007

http://keeppoo.blogspot.com/2007_12_01_archive.html

由于国内已经无法访问blogspot，东华小屋搬家至：. Http:/ www.truevue.org/. 星期二, 十二月 18, 2007. Negation, continuation line. 星期一, 十二月 10, 2007. My blog is removed from GOOGLE search results. I was punished from google for a post that I didnt aware of break the google police. I paste the guidelines:. Avoid hidden text or hidden links. Dont use cloaking or sneaky redirects. Dont send automated queries to Google. Dont load pages with irrelevant keywords. Dont create pages that install viruses, trojans, or other badware. Check th...

keeppoo.blogspot.com

Donghua World: 三月 2009

http://keeppoo.blogspot.com/2009_03_01_archive.html

由于国内已经无法访问blogspot，东华小屋搬家至：. Http:/ www.truevue.org/. 星期一, 三月 23, 2009. Http:/ lh4.ggpht.com/ Tyb1mj7bn04/ScbfTD4VBiI/AAAAAAAAAas/LXNM0pJVTrk/s144/dile-newegg.jpg. Picasa，提供了四种图片大小供你选择：144，288，400，800。 Http:/ lh4.ggpht.com/ Tyb1mj7bn04/ScbfTD4VBiI/AAAAAAAAAas/LXNM0pJVTrk/ s144. Http:/ lh4.ggpht.com/ Tyb1mj7bn04/ScbfTD4VBiI/AAAAAAAAAas/LXNM0pJVTrk/ s288. Http:/ lh4.ggpht.com/ Tyb1mj7bn04/ScbfTD4VBiI/AAAAAAAAAas/LXNM0pJVTrk/ s400. 现在你发现了其中的规律了吧，其实除了上面的四种大小，我们还可以用下面的一些：. S912,s1024,s1152,s1280,s1440,s1600.

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vlsi-asic-fpga.blogspot.com

VLSI ASIC & FPGA

VLSI ASIC and FPGA. Wednesday, February 13, 2008. CDC - Clock Domain Crossing guidelines. A good article on CDC guidelines. Understanding Clock Domain Crossing Issues. Asynchronous signals in a synchronous world. Links to this post. Tuesday, January 29, 2008. Flip Flops and Register timings. The two important timings of a flip flop are. Links to this post. Divide by 3.5 clock divider. Divide by 3.5 clock divider. Divide by 3 first and add the negedge flop in series to make divide by 3.5. Divide by 3 = =.

vlsi-basics.com

VLSI Basics And Interview Questions

VLSI Basics And Interview Questions. This Blog is created for Basic VLSI Interview Questions. This content is purely VLSI Basics. Sub Child Category 1. Sub Child Category 2. Sub Child Category 3. Wednesday, 30 April 2014. Here I am going to discuss about Tie Cells Insertion. Before going to know about Tie Cells Insertion, We have to know what Tie Cells are. Tie High Cell is special purpose standard cell whose output is Constant High (Vdd). Why Tie cells are inserted? In lower technology nodes the gate ox...

vlsi-concept.blogspot.com

ASIC/VLSI Basic Concept

ASCI/VLSI Basic Concept blog try to collect basic concept for ASIC IC Designs, including front-end and back-end. Wednesday, September 7, 2011. VCD File In Power Analysis. VCD Stands for Value Change Dump, VCD file is used for verilog simulation and power analysis. VCD file is an ASCII format file include waveform information, this file is used by Verilog simulators. VCD file fromat is defined by IEEE Standard 1364. Tuesday, July 5, 2011. ICC procedure: dump layout window snapshot. Get placement utilizati...

vlsi-concepts.com

VLSI Concepts - Home

VLSI Concepts was founded in 1995 by Dr. Edward L. Hepler. Dr Hepler began his career as a Member of Technical Staff in the Processor Design laboratory of Bell Laboratories where he helped design high reliability processors used in electronic switching systems. From there he moved to the Space Systems Division of General Electric and then to Commodore Business Machines where he developed chips for next generation Amiga machines. . VLSI Concepts - Cores. VLSI Concepts - Consulting.

vlsi-core.blogspot.com

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Tuesday, December 24, 2013. Clock Jargon: Important Terms. Clock to an SoC is like blood to a human body. Just the way blood flows to each and every part of the body and regulates metabolism, clock reaches each and every sequential device and controls the digital events inside the SoC. There are many terms which modern designers use in relation to the clock and while building the Clock Tree, the backend team carefully monitors these. Let's have a look at them. Consider a hierarchical design where we have...

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VLSI-EDA Laboratory

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VLSI Encyclopedia

ENHANCE YOUR KNOWLEDGE OF VLSI DOMAIN. HERE YOU CAN FIND THE TOPICS REGARDING VLSI DESIGNING AND VERIFICATION SUCH AS DIGITAL DESIGNING BASICS, TIMING ANALYSIS, SYNTHESIS AND SIMULATION, VHDL, VERILOG, SYSTEM VERILOG, ASICS AND MUCH MORE. SO COME AND EXPLORE YOUR KNOWLEDGE OF VLSI. Saturday, July 28, 2012. Very Large Scale Integration (VLSI): VLSID 2013 - 26th International Conference on VLSI. Very Large Scale Integration (VLSI): VLSID 2013 - 26th International Conference on VLSI. Friday, January 6, 2012.