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First Multilayer Board - vias question

autodeskguest

Hi,

 

I'm working on the first 4-layer board and I was unable to find the answer

in documentation.

 

I have 4 signal layers.

 

All my vias are simple ( no blind or burried vias to keep cost down).

 

Question : Are vias connecting in all 4 layers 1,2,15,16 always ?

 

Is it posssible to have let say via connecting 2 to 16 while there is a

polygon or very wide trace of another signal over the via  in layer 15 ?

 

If yes, how do I make it working?

 

Thank you.

 

 

 

Parents

  • Sagi Barak wrote:

    Hi,

     

    I'm working on the first 4-layer board and I was unable to find the answer

    in documentation.

     

    I have 4 signal layers.

     

    All my vias are simple ( no blind or burried vias to keep cost down).

     

    Question : Are vias connecting in all 4 layers 1,2,15,16 always ?

     

    Is it posssible to have let say via connecting 2 to 16 while there is a

    polygon or very wide trace of another signal over the via  in layer 15 ?

     

    If yes, how do I make it working?

     

    Thank you.

     

     

     

    The key is to make sure that your DRC is set up properly.

     

    In the DRC layers tab the Setup should be (12+1516) .

     

    If this is the  case then all vias will be straight through all layers.

    Read the accompanying explanation in the DRC layers tab for setting up blind

    and buried vias for future reference and to reassure yourself that the above

    setup is correct.

     

    cheers

     

    David

     

Reply

  • Sagi Barak wrote:

    Hi,

     

    I'm working on the first 4-layer board and I was unable to find the answer

    in documentation.

     

    I have 4 signal layers.

     

    All my vias are simple ( no blind or burried vias to keep cost down).

     

    Question : Are vias connecting in all 4 layers 1,2,15,16 always ?

     

    Is it posssible to have let say via connecting 2 to 16 while there is a

    polygon or very wide trace of another signal over the via  in layer 15 ?

     

    If yes, how do I make it working?

     

    Thank you.

     

     

     

    The key is to make sure that your DRC is set up properly.

     

    In the DRC layers tab the Setup should be (12+1516) .

     

    If this is the  case then all vias will be straight through all layers.

    Read the accompanying explanation in the DRC layers tab for setting up blind

    and buried vias for future reference and to reassure yourself that the above

    setup is correct.

     

    cheers

     

    David

     

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