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cadence 6.1 virtuoso

  • Help with complete understanding of "vsin" source in Cadence

    Hi. I kind of thoroughly Googled before posting this question for seeking help from you guys! The "vsin" source (in analogLib) of Cadence has many parameters: i) AC magnitude, AC phase, DC voltage ii) Offset voltage, Amplitude, Frequency,... Question 1: Internet resources are indicating that...
    Posted to Custom IC Design (Forum) by jdp721 on Sun, May 11 2014
  • conversion off grid

    Hi Cadence Community I am having a bit of a problem transitioning existing layout designs from Cadence’s Virtuoso 5.10.4 to Virtuoso 6.1.4. Using the Conversion Tool Box feature CDB to OpenAccess Translator that is provided. The design transition over to 6.1.4 is relatively smooth, lvs checks are...
    Posted to Custom IC Design (Forum) by flintae32 on Wed, Nov 20 2013
  • compatibility of Assura 3.1 for 65 nm process

    Hi, I have been using Assura 3.1 for DRC,LVS and extraction for 0.35 um cmos process and now we have been using 65 nm process. Does this Assura is capable for DRC, LVS and including extraction for 65 nm cmos process.
    Posted to Custom IC Design (Forum) by Jithin on Sat, May 25 2013
  • Phase noise plot

    Hi, I have been doing a Pnoise analysis . Unfortunately I was unable to plot the phase noise response. My design was setup was described below. My apparatus was a PLL with a fixed divider ratio of 20 and output frequency of 500Mz In PSS analysis I have set the beat frequency as reference frequency ie...
    Posted to Custom IC Design (Forum) by Jithin on Wed, Apr 10 2013
  • Generating LEF from layout view

    Hi all! I have been trying to export LEF from standard cells layout in order to use that LEF file in Encounter for automatic PnR. From virtuoso I select File -> Export -> LEF and fill the form appropriately but the lefout.log is giving a warning on metal 4 as shown below: Warning (OALEFDEF-50144...
    Posted to Custom IC Design (Forum) by BraveHeart on Tue, Jun 12 2012
  • Running Cadence IC on VMware?

    My IT department is very enthusastic about putting everything on VMware. They say that this will make their job much easier. I would like to know if you, anyone, or your company has tried running Cadence IC, ADE, or Virtuososo (any version) on VMware and how it worked out for you.
    Posted to Custom IC Design (Forum) by John Reeder on Fri, Apr 6 2012
  • Transient noise

    Hi , What does the transient noise tab in the analyses window of spectre means and what were the values should be given for noise max. ,noise min and bins if my oscillator is working at 450MHzand running for 150ns. Thanks in advance. with regards, Jithin
    Posted to Custom IC Design (Forum) by Jithin on Wed, Mar 21 2012
  • Modelling noise in Power supply

    Hi, I'm designing a VCO based on ring oscillator architecture and would like to simulate power supply Jitter using cadence spectre. so please help me in adding noise to power supply or help me in modelling supply with jitter. Thanks in advance. with regards, Jithin
    Posted to Custom IC Design (Forum) by Jithin on Wed, Mar 7 2012
  • Re: How to perform Post-Layout simulations using UltraSim for Black-Box Cells?

    Hi Quek Thanks for your reply. I specified the dpf file as per your advice and the simulation has completed successfully and a graph is also plotted but results are not correct! Actually ultrasim is not able to find the 'INVXL' subcircuit. (which is Artisan's standard cell). Here is the message...
    Posted to Custom IC Design (Forum) by BraveHeart on Wed, Oct 26 2011
  • Cadence crash !

    Hi, I have just installed a new PDK on my CADENCE IC 6.1.4, and I have the following errors that I cannot solve! : 1/ When I launch cadence IC6.1.4 with the command: "virtuoso", I can see in the CIW window that the initialization runs a lot of time and finally ends with : " * Error * unknown...
    Posted to Custom IC Design (Forum) by lraf on Fri, Aug 26 2011
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