noise analysis
Hello, After running noise analysis, printed noise summary.I couldnt understand te Param info from the summary.What is fn, id, rs etc stands for?Is the total input referred noise = total summarised...
View Articleinstalling TSMC 65nm standard cell libraries in IC 6.1
Hi, I have just downloaded a set of standard libraries in TSMC's 65nm process node I would like to make them appear in Cadence IC 6.1.3 library manager Do I have to use Vulcan to install them or just...
View ArticleError plotting finesim psf results with OCEAN/artil
Hi,I have a set of PSF results generated with the finesim simulator (run from ADE through OASIS). Now, I need to run some calculator functions on them.When I open the results directory in OCEAN or...
View ArticleParameter file - load every time?
What do I set to have my own parameter file loaded every time? I made a parameter file with the settings the way I want them, but I have to load it everytime I start the program. This becomes...
View ArticlePaths to Symbols & Pads go back to defaults between designs wierdness.
I am seeing some strange issues in 16.5 with symbol & pads paths. When I create a new board I have to go in to the user preferences\Paths \Library each time to edit where I want Allegro to pull...
View ArticleConverting libraries
I want to convert the standard SM.LLB from 16.2 into 16.5 format.I have created a catalog, set the plane layer to a routing layer and saved it as a .max file.I then start a new board in PCB Editor, go...
View ArticleBreaking down foot print libraries into categories
I find the one big footprint library very cumbersome. Has anyone broken theirs down into sub categories, ie; resistors, capacitors, ic's, etc..... If so are there any special constraints for the...
View ArticleHow to use a Newly Added Model (specify Early Voltage or Lambda for NMOS)
I was trying to use an NMOS with an early voltage value specification (of 100 v to be precise). I looked through the powermos.lib (powermos.olb) library and I could not find any parameters that may...
View ArticleProblem with ERROR (OSSHNL-249)
Hi, I'm trying to design a simple decoder in which I'm using my own and and invertors with my own VDD and GND.I created the VDD and GND pins in the invertor, nand. and to form and I used nand and...
View ArticleGDS number for a layer
Hi all, How can I get gds number for a layer(m1 label). My version is 5141. Thank you.
View ArticleProblem while integrating sv uvc in e environment
Hi Friends, I developed AHB arbiter UVC in sv by using UVM methodology. Now i want to verify my arbiter uvc with cadence ahb vip in e environment.while integrating i am facing error and then...
View ArticleSpecman Tutorial
Hi everybody ,Can anybody please suggest me quickstart tutorial to specman-e . I have knowledge of systemverilog uvm and now i want to shift to specman e. I Have specman 9.2 and above... are there any...
View ArticleCadence simulate ring oscillator's output in frequency domain (continuous wave)
Hi,Could anyone please help me with this question? I need to simulate my ring oscillator's output in frequency domain, showing a continuous spectrum waveform as it can be seen from spectrum analyzer...
View Articletop side via tenting on thermal pad
Does anyone have any suggestions on creating footprint with thermal pad that requires topside via tenting on the top side?I tried making shape symbols for solder mask/ paste mask, but due to the void...
View Articlehelp on shape fill when using axlDBCreateShape..
Hi everyone, I am currently working on a certain program wherein a certain cline segment will be converted to shape(version of allegro used is 16.5).. i was able to generate the shape by first getting...
View ArticleDifference between session and o_session
Hi All,Please can you explain difference between session and o_session in ADE.Ex :winid = hiGetCurrentWindow()winid~>sevSession**************** Return Value :...
View Articleforcing the creation of a vcd file
Hello,How do I instruct simvision to force the creation of a vcd file? I am trying to create tcl script to dump signals into a vcd file and then immediately post-process this very vcd.These are the two...
View ArticleCurrent source equivalent/substitute
Hi,I desgined the circuit attached, but I need to replace the current source with an equivalent circuit using an operational amplifier (with voltage source).The current source is adjustable from 4mA...
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PSPICE Simulation Error "Extra Text On Line"
Hi, Working on an audio amplifier project for school and I'm trying to simulate the circuit in Pspice. When I actually go to run the simulation, I keep getting an "Extra Text On Line" error. Here's the...
View Articlehow to turn on Bubble and shove via
Hello everyone,I apologize in advance for what must certainly be a basic question, but how in the world do you turn on the "bubble" to push and shove traces? I was battling a via that I couldn't...
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