[ibis-macro] Sep 6 minutes

  • From: milabont@xxxxxxxxx
  • To: <ibis-macro@xxxxxxxxxxxxx>
  • Date: Wed, 14 Sep 2005 22:27:57 -0400

Sorry about the delay - I thought the minutes from the last phone call
had been sent out. Here they are.

Mike
meeting date: 6 sep 2005
attending: Arpad Muranyi, Todd Westerhoff, Ian Dodd, Bob Ross, Barry Katz,
           Ken Willis, Sam Chitwood, Mike LaBonte
-------------

AR: Mike will annotate one module, get comments, do the rest
- Sent, need to discuss Arpad's feedback.

AR: Todd and Mike start presentation
- IBIS summit time slot allocated, presentation only begun.
  title: "An IBIS 4.1 Macro Library for Simulator-Independent Modeling"

AR: Ken find out if Cadence can contribute another template
- Yes, they can.

-------------

DesignCon East IBIS summit.
- Todd and Mike will be there. Bob and Arpad by phone.

Comment format:
- Will use p and n 
- Should try 
- T-line terminals should be COND1, COND2, etc. to avoid confusion with
  N1, N2, as node numbers.
- Spell out what the example means in words.
- Comments could have XML format.
  - Mike will send sample.
  - May be less readable to humans.

Library discussion:
- Should we have min(), max() etc. modules?
  - No, people need to learn the language.
- Should we discourage people from writing equations at template level?
  - Less mappable if they do.
  - Should we write more building blocks?
    - Let's not try so hard to predict what people need.
  - Library needs to be stable before sim vendors will implement mapping.
  - This is why we want cadence templates.
- Dynamic buffer C_comp scaling?
  - Would take a lot of additional ports if we made everything scalable.
  - Cadence hasn't seen the need.
    - Maybe V/I scaling.
  - How about waveform delay scaling?
  - Will simulators be able to do this?
  - Static is OK.
- Need open-drain and open-source buffers?
  - Could have a parameter for model_type.
  - Should we have a larger number of modules with just the right ports,
    or a smaller number of more general purpose modules?
    - Since we are making people clone the buffer modules for each instance,
      we should make them minimal.
- PWL table model?
  - Should table data be embedded?
    - yes.
  - Can we make a triggerable PWL?
    - Only maps to Kumar-SPICE so far.

IBIS summit presentation:
- Hopefully it can be in the morning, before many people leave.

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Next meeting: Tuesday September 27, 2005.

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  • » [ibis-macro] Sep 6 minutes