Stats

  • Locked Locked
  • Replies 6
  • Subscribers 125
  • Views 16627
  • 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

question on multiple layout views to be use for 1 schematic

zeroskills

quick  question on multiple layout views to be use for 1 schematic. someone is proposing to use 2 layout views such as layout; layoutv2 for 1 schematic. i think the reasoning was like this, he wanted a 2 versions of layout with one schematic like the example below...

cell: opamp

- schematic 

- layout - original layout

- layoutv2 - exact copy of the original layout, but caps have been modified to fit a specific spot in chip

----> the cell opamp have 1 schematic but have 2 layout view, layout is used on the left side of the chip and layoutv2 is used on the right side of the chip.

i asked, why not just have another version of the circuit/schematic (opamp --> opamp_v2), with 1 schematic and 1 layout view. so my reasoning was like this:

 

cell: opamp

- schematic 

- layout - original layout

cell: opamp_v2

- schematic 

- layout - exact copy of the original layout, but caps have been modified to fit a specific spot in chip

----> opamp layout is used in left side and opamp_v2 is used on right side.

but he insist to just have 1 version of the circuit schematic since if he did have another version it would be just the same. also i think he doesn't want to change another version of the same circuit if he have changes, like his changing the same circuit twice.

so is it possible to have 2 layout views of the same schematic? since i've been doing layout, i never have taped out any cell or citcuit that have a different layout view or shcamtic view, it's always been layout and schematic for 1 cell and that's it, and not for example, 1 cell then layout2, schematic.

Parents

  • And if using IC5141, you can use the lxUseCell property to tell a particular instance of opamp in the parent schematic that it should use one variant or the other.

    If you're not using Layout XL, then it doesn't matter of course - you can do what you want!

    Regards,

    Andrew.

Reply

  • And if using IC5141, you can use the lxUseCell property to tell a particular instance of opamp in the parent schematic that it should use one variant or the other.

    If you're not using Layout XL, then it doesn't matter of course - you can do what you want!

    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.