emtpy space in cellview when fit zoom
What I have triedprocedure(updateBBox() foreach(lll getEditRep()~>lpps if(lll~>layerName=="changedLayer" then foreach(shape lll~>shapes dbDeleteObject(shape)) )...
View ArticleRedefine function keys when switching edit modes
Hi Everyone, I’m a relatively new Cadence user, just 4 months on the tool so far. Before switching to Orcad Design Professional, I was an Mentor Expedition user. I use a Nostromo N52 speedpad while...
View ArticleDisable "Save Display Information" form
Hello,I'm making some display resource modifications from a skill script using the function drSetPacket. When I close the CIW window I get a pop up asking me if I want to save display information...
View ArticleDriving an internal node several heirarchical layers down...
All, First, an apology. I am new to ADE XL and spectre, coming from hspice and MICA, so if I am asking a really obvious question, please pardon my ignorance. However, in my defence, this is stumping...
View Articlepadstack file data format
Does anyone know what the format for a padstack file is? I've tried looking at the binary information in a hex file but not only does the format not make any sense it seems to change everytime I resave...
View ArticleVirtuoso Library Manager Bindkeys
I couldn't seem to find any information on creating bindkeys for the library manager.Is it possible to use the hiSetBindKey() for library manager callbacks? If not, is there a private cadence function...
View ArticleCgs and Cgs vs Vgs
Hi.I set up this circuit for simulation Cgs and Cgs as Vgs changes. Below are the curves Cgs and Cgs vs Vgs.(please see it in the second post. The forum doesn't allow to post two images in a single...
View ArticleProblem in plotting Cgs vs Vgs
Hi.I need to plot Cgs vs Vgs of a NMOS transistor. I have searched a lot and followed tutorial but still in vain. Below is my circuit for simulation. My schematic and setting is attached in the picture...
View ArticleOpAmp Simulation in Cadence Spectre
Hi, I have used OpAmp symbol from Solutions library (default library of cadence). As an initial step, I have simulated a basic circuit in Op Amp. But I am not getting the desired output. Moreover, I...
View ArticleHow to delete something on symbol editor of Allegro 16.2
Dear All,I am trying to create a new symbol. I opened allegro-16.2, File-New-Package Symbol. I put 5 pins instead of 4 pins.Now I want to delete the 5th one. I tried Edit-Delete & clicked on the...
View ArticleDifferential Non Linearity and Integral Non Linearity for ADCs
I was wondering if there is a way to generate DNL and hence INL plots for ADCs in Cadence.It can be implemented in Simulink, however there is no known reference for that in Cadence Virtuoso.Thanks.
View ArticleFrom eagle to orcad import
I would like to ask how to import a footprintfor sensor, from eagle to orcad ??
View ArticleMerge via arrays with skill?
Hi,I'm looking to merge all via arrays in a layout to single vias, and to use the original via areas. For instance a 3x3 array of 0.26um² vias would become one via of 0.78um², centered at the center of...
View Articlemodel card vith a verilogA model through spectre
Hello,I would like to run my own verilogA model with spetcre through a model card approach.Nevertheless my model paramaters are not recognized, so not took into account in the...
View ArticleMove cursor to x,y in IC5.1.41
Hi,On a previous project in IC6.1.5, there was a layout bindkey that would prompt for an x,y coordinate and move the cursor to that specific point. I'm now working on a project in IC5.1.41, and I'd...
View ArticleMixed-signal LVS netlist from schematic
Hi,I need some help running mixed-signal LVS on a 180nm CMOS design using IC 5.1.41 and Calibre LVS.The top level design is a Cadence schematic that contains several analog blocks and a nested digital...
View ArticleHow to set the diameter value of circle shape in Allegro
Dear All,Is there any way of setting the value of Shape -circle in Allegro. Kind Regards,
View ArticleHow to place multiple pins with particulat pitch in Allegro .
Dearf All,I am trying to design a package symbol. It has a lot of pins to be placed with certain pitch.Is there any particular command or skill script to place multiple pins at certain pitch in...
View ArticleVias in a symbol
I have a new dilemma this morning. I have an array of 30 vias that I need to embed in the tab of a TO package. My first curse of action was to add the VIA at the board. This led to inconsistent hookup...
View ArticleSubdrawing in Allegro
Hi i am trying to export few components from one board to other by subdrawing in allegro....after importing sub drawing I cant able to see the Ratnets of the imported components...help me
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