Stats

  • Locked Locked
  • Replies 3
  • Subscribers 125
  • Views 15410
  • 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

Virtuoso ADEGXL: SKILL function falltime(...)

Eberhard2010

Hello Virtuoso SKILL Programmers,

I m using the ADEGXL for measuring delay, power, slewrate of some digital blocks like NAND2 NOR2 a.s.o.

As it is described in the Manual of the SKILL function fallTime, it can be applied e.g.:

wavelet=fallTime(v("/Y" ?result "tran-tran") 0.9 nil 0 nil 90 10 t "time")

=> srrWave:0x188ac0a0

 

For falltime 0.9V=VDD 0V=GND 10%-90% and multiple occurencies, i got this object.

I my transient simulation the Output Y of my circuit falls at multiple times, so the fallTime is unfortuenatly displayed as a waveform.

Now I want to know how a get the exact values out of this object "srrWave:0x188ac0a0". I mean, when the fall is detected, how often is a fall deteced, what is the outcome for each fall case seperately a.s.o.

 

Also the functionality "export results" excludes waveforms, so I have no chance to get this values out here.

Can I somehow modify the print-method for "export results" to get my desired values?

 

As this is a very common issue, I guess there's a very easy solution for it. But I don't get it yet. Maybe someone can help me out?

Kind Regards Eberhard2010

Parents
  • Andrew Beckett

    Hi Eberhard,

    2) Actually you have the initial and final values back to front, so that compensates for it. According to the docs, and the defaults in the UI, the order would normally be 10 and 90. Still, never mind, it works...

    3) In recent enough versions of IC615, the tables should handle parametric data, AFAIK.

    6) This is the right forum. However, remember that it's manned by volunteers (from Cadence and from the community) and so there's no guaranteed response - we just do this in our spare time.

    7) I'm not aware of anything right now, but maybe you could send a direct message to Patrick Haspel (you should be able to find him as a member on the community) - he's responsible for our European University Programme.

    Regards,

    Andrew.

Reply
  • Andrew Beckett

    Hi Eberhard,

    2) Actually you have the initial and final values back to front, so that compensates for it. According to the docs, and the defaults in the UI, the order would normally be 10 and 90. Still, never mind, it works...

    3) In recent enough versions of IC615, the tables should handle parametric data, AFAIK.

    6) This is the right forum. However, remember that it's manned by volunteers (from Cadence and from the community) and so there's no guaranteed response - we just do this in our spare time.

    7) I'm not aware of anything right now, but maybe you could send a direct message to Patrick Haspel (you should be able to find him as a member on the community) - he's responsible for our European University Programme.

    Regards,

    Andrew.

Children
No Data

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.