Stats

  • Locked Locked
  • Replies 5
  • Subscribers 125
  • Views 11435
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

soft_bin=allmodels

sohaiba

Hello,

Can anyone tell me how to turn on soft_bin=allmodels option in the simulator ? I don't see any option in the IC 5.14 ADE > Simulation > Options > Analog.

 

Regards

  • You can type it into the Additional Parameters field at the bottom of that form. 

    Regards,

    Andrew 

  • Thank you for the quick reply. It works. Can you tell me what does the simulator do in this condition? I mean how does it fill up all the bins? what is the logic behind it?
  • When the simulator can't find the correct bin model card (or a model card) for a given instance, and the designer still wants to simulate, then after setting this option to (singlemodels/allmodels), the simulator will pick the nearest bin to this instance.
    1. singlemodels (the default). When a model card is not a bin model card, but there is lmin/lmax/wmin/wmax defined in this model card, the simulator will try to validate those parameters by comparing them against length/width of the instance. After setting the option to this value, the simulator will give out a warning if the instance doesn't fit the model card, instead of aborting.
    2. no. If there are any instances which don't fit the bins or lmin-lmax/wmin-wmax range for a single model, then abort the simulation.
    3. allmodels. When an instance can't find correct the bin, after setting this option, the simulator will try to bind the nearest bin to this instance.

    Hope that helps,

    Andrew.

  • in reply to Andrew Beckett

    I tried putting soft_bin=allmodels in the additional parameters as specified, but got this 

    WARNING (SFE-30): "input.scs" 3284786: Parameter `soft_bin', specified for primitive `tran', has been ignored because it is an invalid instance parameter. Specify a valid instance parameter and rerun the simulation. Type `spectre -h tran' to get more information on valid instance parameters.

    Any solutions/suggestions?

  • in reply to SunnyB

    You've put it in the wrong place. As I said above, this needs to go on Simulation->Options->Analog - in the additional parameters (at the bottom in IC5141, and in IC61X I think it's on the Misc tab). Rather than specifying it as a global option (see "spectre -h options") you've tried to add it as a parameter to the tran analysis, and that doesn't make sense.

    Andrew.

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.