GDSII import in Cadence Virtuoso | Stream In GDS in Cadence Virtuoso

[@Fr0stBite5055]

Thank you this helped me provide a example of this program for my senior project!

[@ramamurthyj5703]

great work sir please continue

[@TeamVLSI]

Thanks Rama :)

[@StayInBliss]

Thanks sir, learnt a lot...

[@TeamVLSI]

Thanks Anish

[@parimalarenga92]

What is the system requirement to run this cadence software?

[@TeamVLSI]

Hi Parimala, Minimum requirement is very lesser, But a machine having 2GB RAM, 500GB HDD, 64bit Linux and i3 processor and higher configuration is fine for general use.

[@parimalarenga92]

What about graphics card can i run this with Integrated graphics card or i need dedicated graphics card?

[@TeamVLSI]

Integrated graphics is also fine.

[@donvu5328]

What options do you have turned on for the XStream In? I streamed in a GDS file that has hierarchy; but the layout cell had all of its hierarchy flattened and only holds the polygon. I want the XSream In to keep all the same hierarchy as the GDS file.

[@TeamVLSI]

Hi Don, Yes, Hierarchy will be maintained. Please quote the time line of video so I can answer you specifically.

[@donvu5328]

@@TeamVLSI At the 2:05 mark in the video (after you've specified the GDS file, library, and techlib), your mouse is just above the "Show Options" but you didn't click through it. I'd like to compare your options settings to compare against mine since it's yielding flat polygons. Thanks!

[@mohammedafzal534]

Can you tell me what is the difference between full custom & semi custom design

[@TeamVLSI]

Hi Mohammed Basically in full custom design, We start design with scratch, where as in semi custom design, we use some pre designed and characterized IPs, macros or cells instead of developing everything from scratch.

[@mohammedafzal534]

Thank you sir, but in cadence we mostly call every cell from tech library right, then those are all called semi custom or what we called them?

[@pavankori6986]

can you provide a video in cadence how to generate lef file

[@TeamVLSI]

Hi Pavan You could run the following command in innovus intractive terminal to dump the .lef file. >set lefDefOutVersion 5.8 >write_lef_abstract -PGPinLayers M7 -stripePin -specifyTopLayer M7 filename.lef # In the above command set LEF version and metal layers as per your design.

[@mohammedafzal534]

Can i know how to convert layout into gds file?

[@TeamVLSI]

Hi Afzal, You can use "streamOut" command in Innovus along with its required switches.

[@alamurisanjeev5126]

Waht is exact difference between def file and GDSII file

[@TeamVLSI]

There is no basis of comparison, both contains different information.

[@tuongluongthanh2030]

thanks

[@durgeshaddala5574]

Can I get free pdk files? If it impossible explain me how to add pdk files to cadence.

[@TeamVLSI]

Hi Durgesh, Although there is no general way of adding a PDK but you can refer this video: kzbin.info/www/bejne/qIvUhGaGpdGlY68