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Cadence error

JokerakaJoker

Hi everyone, 

I am using Cadence IC 5.1 with UMC Low leakage 65 nm library. I have no problems with transistor and some other stuff. Also I havent got any problems with 180 nm UMC library.

But I cant change resistors values in UMC 65. Library allows me to change it in 2 ways- either change physical transistor parameters like Length and Width or change its resistivity and then Cadence have to change physical paramets in a right way. But it doesnt work- Cadence dispalys an error:

"An error occured when evaluating callback.

Callback: w->callback=> umc65ll_RFRES_w()

Message: *Error* eval: undefined function- umc65ll_resDisplay ". 

What is a problem?

I am looking forward to your answer, Alesander.

  • skillUser

    Hi Alesander,

    The callback function umc65ll_resDisplay is not defined, presumably it would normally be loaded by a libInit.il file?  Did you change the name of the UMB 65 library?  If so, check the libInit.il file to see how it is loading the auxiliary files. I don't know how this PDK is set up, so the files might be loaded by a .cdsinit file - check the file paths to see if they are correct.  Most likely the callback functions etc. are stored within a context file (something.cxt) or an encrypted SKILL file (something.ile) [these are naming conventions and not required by Cadence, so file names could be different].

    If you cannot resolve this yourself then you should contact the PDK provider (UMC) for assistance.

    Hopefully this will help you.

    Regards,

    Lawrence.

  • JokerakaJoker

    Library's name in cds.li was different to its real library name, so i simply didnt attach it during creating a project =) 

    Ive just repaired it, so everything works fine.

    Thank you, Lawrence =)  

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