Display operating point

Hi Santosh,

You might need to look at the cell level CDF for one or more of the cells in question (Tools -> CDF -> Edit from the CIW menus), and in particular look at the interpreted labels section to ensure that there are settings there, and that they seem appropriate.  You should be able to compare any settings with the previous cmosp18 technology.  You may need to refer back to your technology provider if things do not seem correct.  This is most likely to be a technology set up problem rather than a tool issue, especially since you stated that this worked before.

Regards,

Lawrence.

 I assume you mean by using Results->Annotate in ADE? Assuming Spectre is your simulator

If the devices are defined as subcircuits then you need to also check the CDF->simInfo->spectre section for the device.

Look at the opParamExprList for dc operating points and optParamExprList for transient op points.

The parameters would need to be defined here if the models were subcircuits and they wanted the results to be defined based on component values from within the subcircuit.

 Hello,

 I also have similar problem Cadence2007a, with STM CMOS90nm technology. The operating point data are not displayed beside the transistors in the schematic. I tried "Edit > Component display" from Virtuoso schmatic editor and also "Results > Annotate > DC operating points " in the ADE. But none of them show the data. However, by selecting a transistor using "Results > print > DC operating points" I can take a print of all data for one transistor.

I wonder if there is any solution for this issue.

 Thanks,

Ali

Hi,

I tried the method described skillUser but for another PDK (ibm cmos8rf 130nm) and it still wouldn't display the op points that I wanted. I suppose you need to have write permissions on the PDK to change CDF parameters?

I'm curious if santoshvema and naderi are studying at Canadian schools like myself? In that case I don't think its possible to modify the PDK because we have a network installation of the PDK and Cadence tools. Best to check with your STC and try to get a local installation of the PDK.

Also if you're doing a DC sweep you might want to load a .scs file with something along the lines of 

save * sigtype=all

to save the results of the entire parameter sweep. Then you can check tools->results browser->dc-dc to see how all the dc op points vary with the parameter being swept. (that particular command might be a bit overkill, check spectre -h save for a more appropriate save command)

Hello,

Pls check your model files..these may be hspice model. we also faced the similar problems when using hspice models but resolved it by using spectre model files.

regards

Hi Naderi, I have a similar issue with one of the instances, N_12HVTRF. The annotation does not happen, however when I do print dc operating points, I get all the results needed. So, Did you get a solution to this issue? Would be helpful if you could reply. Thank you.