Author Topic: Allegro: How to allow blind/burried vias on top of each other?  (Read 583 times)

0 Members and 1 Guest are viewing this topic.

Offline TheUnnamedNewbieTopic starter

  • Super Contributor
  • ***
  • Posts: 1211
  • Country: 00
  • mmwave RFIC/antenna designer
I have a 6 layer HDI packaging stackup. I'm allowed to have a blind via from M1 to M3, skip the M3 to M4, and then a via from M4 to M6. I have no idea how to tell the DRC engine this. Any suggestions?
The best part about magic is when it stops being magic and becomes science instead

"There was no road, but the people walked on it, and the road came to be, and the people followed it, for the road took the path of least resistance"
 

Offline nctnico

  • Super Contributor
  • ***
  • Posts: 27358
  • Country: nl
    • NCT Developments
Re: Allegro: How to allow blind/burried vias on top of each other?
« Reply #1 on: April 25, 2023, 02:39:55 pm »
I haven't tested this but it is like having an overlapping pad on top & bottom layer. IOW: if the vias don't have shared layers, the DRC shouldn't complain.
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf