Forum Post: RE: Bottom soldermask Gerber Problem
I guess I didn't describe the board properly. I have a plane on the bottom side and some tented vias, but no features in the bottom soldermask. I attached the file that is generated. My gerber viewer...
View ArticleForum Post: Opening ModGen (Module Generator) in Cadence
I was working with ModGen two weeks ago and it was fine. Now, I wanted to go back and do some modifications but I cannot open the menu! I used the following path: Windows -> Assistant ->...
View ArticleForum Post: RE: Bottom soldermask Gerber Problem
Inside your Gerber file you are missing XY coordinates and a few other things. Compare it to an artwork file that works. You will see what I see. I did try to re-import your file back into the PCB...
View ArticleForum Post: Running parallel processes in SKILL code
Hi, I am writing an oceanXL script to launch multiple runs in parallel. While I set each run with ocnxlRun( ?waitUntilDone nil) in the loop to set up the circuit, after all runs are defined and...
View ArticleForum Post: RE: Opening ModGen (Module Generator) in Cadence
The constraint manager is only in Virtuoso Layout Suite XL (or GXL). You're using VLS L from the picture, and so the assistant won't show up. ModGens themselves require GXL licensing and so must be...
View ArticleForum Post: RE: Virtuoso, monte carlo simulation to measure fervency of ring...
Hi Amin, I assume you mean a Physically Unclonable Function (unless Uncolnable is some term I've never heard of) - not that this is terribly relevant to the question. I still don't understand why you...
View ArticleForum Post: RE: Vref Opamp Simulation
Your first step would be to ask a question that makes sense. I have no idea what you're asking (or why you're asking it in the SKILL forum). Kindest Regards, Andrew.
View ArticleForum Post: RE: Opening ModGen (Module Generator) in Cadence
Thank you Andrew. Using the Layout GXL, the problem is solved and I am able to work with ModGen. Thanks again!
View ArticleForum Post: RE: addStripe command for multiple power domains
try getting rid of the start/stop arguments.
View ArticleForum Post: RE: Hierarchical Design using characterized blocks timing issues
Did you balance the clock tree to your blocks? I haven't done clock trees in a long time, but in the old CTS method, we would use a "macromodel" that basically told the top-level what the insertion...
View ArticleForum Post: RE: Dangling wires/extra net length using -sroute command
this seems strange - are the vertical stripes on grid?
View ArticleForum Post: RE: Encounter's "common timing library"
what version are you using? the libraries should be set up using a MMMC file so that you can have as many analysis views as your design requires...
View ArticleForum Post: RE: Funckey and Alias in Env file work erratically in latest Hot...
Well very cool Dale, That hot key issue was kind of interesting, I can honestly say I never had a problem with them in the prior cuts of 17.x. On a related note MS did push down an update a few months...
View ArticleForum Post: RE: Bottom soldermask Gerber Problem
Hi Your output does not contain any pcb items on the bottom soldermask layer from which a gerber gcode can be generated from. Basically there is no bottom solder-mask so the bottom surface of your...
View ArticleForum Post: Constraint region overrides net based constraints
Using 17.2 I have created a rigid-flex PCB. By default when a zone is created PCB Editor creates a constraint region around the perimeter of this zone. This is fine except when the nets within this...
View ArticleForum Post: How to set Vref of Opamp in adhLib
Hi everyone, I use Opamp in adhLib to simulate the inverting voltage circuit. with input Voltage is linear funtion in range -1 to 1 ( I use Vpwlf to make it) My point is with input Voltage in [-1;0],...
View ArticleForum Post: RE: Is there a way to describe the charge across the device as a...
Thank you for your help Andrew. I'm well aware how to solve the discontinuity near the beginning. Could you explain what you mean by "numerical smoothing." This model is working pretty close to how I...
View ArticleForum Post: RE: Dangling wires/extra net length using -sroute command
It's fixed....I had to decrease using the modifyPowerDomanAttr the length by about 0.12 um....so instead of say, 30 it fixed to 29.844 say... Thanks!!
View ArticleForum Post: RE: addStripe command for multiple power domains
precisely...using both x and y components doesn't exactly help...use either of them....also using -minGaps {...} is better instead of -gapEdges
View ArticleForum Post: RE: Encounter's "common timing library"
yes..this happens as your MMMC file overwrites it...so set up individual views for each instant...something like _MAX_TYP $LIB_PATH and if you have set_analysis_view enabled or update_delay_corner make...
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