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  3. How to simulate a fully differential input/output buffer...

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How to simulate a fully differential input/output buffer .ibis model in Cadence Virtuoso?!

bitan1990
bitan1990 over 7 years ago

Hello,

Could you please layout the details, how to simulate a fully differential output buffer(Tx) and fully differential input buffer(Rx) ibis model in Virtuoso?!

The ibis buffer from analogLib is not working in differential mode. Beside there are no options to specify the io signal type (e.g. if the signal io is P/N type). Also I could not specify the Pin number!

Only the Model name is not sufficient in my case. I wish to declare the pin number and type of signal along with the model name such that the io buffer could identify the target model distinctly within the XXX.ibs file. Kindly give your suggestion ASAP.

Regards,

Bitan
Virtuoso Version: 6.1.6-64b

Simulator: Specter

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  • Andrew Beckett
    Andrew Beckett over 7 years ago

    Please follow this up with customer support. I'm not that familiar with the ins and outs (excuse the pun) of IBIS; certainly in IC617 there seem to be a lot of choices for the ibis_buffer which change the symbol but I'm not sure whether it's what you want. Contacting customer support would allow us to redirect your query to somebody who knows about this in more detail.

    You might also want to check with a recent IC617 hotfix just in case (since IC616 is old and unsupported now).

    Regards,

    Andrew.

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  • Andrew Beckett
    Andrew Beckett over 7 years ago

    Please follow this up with customer support. I'm not that familiar with the ins and outs (excuse the pun) of IBIS; certainly in IC617 there seem to be a lot of choices for the ibis_buffer which change the symbol but I'm not sure whether it's what you want. Contacting customer support would allow us to redirect your query to somebody who knows about this in more detail.

    You might also want to check with a recent IC617 hotfix just in case (since IC616 is old and unsupported now).

    Regards,

    Andrew.

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