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  3. Scripts or commands to create the package stackup

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Scripts or commands to create the package stackup

sidm
sidm over 5 years ago

Hi All,

are there any commands or scripts that can help to create package stack-up from scratch in an automated manner.

Something that can take in no. of conductor , dielectrics layers along with the thickness and material information and dump a tech file or mcm to be imported into SIP ?

I also wish to parametrize the package dimensions.

regards

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  • masamasa
    masamasa over 5 years ago

    you can always import and export the cross section technology file from the cross secton editor.

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  • sidm
    sidm over 5 years ago in reply to masamasa
    Thanks for the reply, how do you define a package on package structure using this cross section editor? Any doc or  example for this ?
    I think It doesn't allow to define soldermask layers more than once inside the editor. Suppose I need to define soldermask layers for both the package of the pop.
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  • sidm
    sidm over 4 years ago in reply to masamasa
    thanks for the reply ,
    Regarding combining the sip databases what I am looking for is a way to combine the stackups into a single stack-up . Let's say the laminate1 has 4 layers and the laminate2 has 8 layers.
    Now I wish to be able to include all the 4 layers of laminate1 into laminate2 such that in the final stackup I will have 12 layers.
    I tried the sub drawing method but not sure if that will help for the above mentioned requirement ?
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  • masamasa
    masamasa over 4 years ago in reply to sidm

    after adding the top 4 layers of the laminate 1 design on the cross section editor on the laminate 2 design, you can import laminate1 design into the laminate 2 design.

    you are very lucky as you need to deal with only 12 layers.

    i have to deal with 21 layers (5 layers on the interposer plus 16 layers on the bottom substrate)

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  • sidm
    sidm over 4 years ago in reply to masamasa

    thanks for the reply, actually this is the pre-design stage. There is no design. You can assume that there are 2 stack-ups available one with me and other with another end user. I will give the end user the laminate2 stack-up without any design.

    The other user wants to instantiate this laminate2 stackup on his laminate1 stackup and then start the design. This will then become easy for them to repeat this for other database in future if they are able to instantiate my stackup over their laminate database which can change from time to time.

    So keeping this in mind can you please suggest what should be done.

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  • masamasa
    masamasa over 4 years ago in reply to sidm

    if there is not design yet, that would be much easier.

    i would talk to your end user as to what layer names, what constraint name to be used on the design.

    then you create one file which has all the layers including laminates 1 & 2 and all the constraints used on laminates 1 & 2.

    you give your end user a copy of the file.

    you work on the laminate 1 portion.

    your end user works on the laminate 2 portion.

    after you and your end user complete the work, then you can combine them into one design.

    you are very lucky as you have another one to work with.

    i have to work alone with designing both laminates 1 & 2.

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  • sidm
    sidm over 4 years ago in reply to masamasa

    thanks for the reply,

    "you create one file which has all the layers including laminates 1 & 2 and all the constraints used on laminates 1 & 2." -

    the above method is not scalable as tomorrow if their laminate1 changes then again a new file has to be created hence i am trying to seek a scalable solution where I just give the end user the database and they should be able to use it with whichever laminate stackup they have in future without requiring my intervention. This is the way the end user wishes. They don't wish to come back to me time and again if they laminate layers change.

    By the way the 12 layers is just an example that I gave , actual scenario is having many more layers in laminate1 and 2.

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  • sidm
    sidm over 4 years ago in reply to masamasa

    thanks for the reply,

    "you create one file which has all the layers including laminates 1 & 2 and all the constraints used on laminates 1 & 2." -

    the above method is not scalable as tomorrow if their laminate1 changes then again a new file has to be created hence i am trying to seek a scalable solution where I just give the end user the database and they should be able to use it with whichever laminate stackup they have in future without requiring my intervention. This is the way the end user wishes. They don't wish to come back to me time and again if they laminate layers change.

    By the way the 12 layers is just an example that I gave , actual scenario is having many more layers in laminate1 and 2.

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  • masamasa
    masamasa over 4 years ago in reply to sidm

    you and your end user can work separately with different designs on different files.

    if you later change the layer stackup, that would be fine.

    if your end user later change the layer stackup, that would be fine also.

    when you combine them into one file, you simply make sure that no layer names, no constraint names, no symbol names are identical.

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  • sidm
    sidm over 4 years ago in reply to masamasa

    Thanks for the reply, but I won’t be changing the design. It needs to be a plugin for the end user so that they can do trials with their different  stackups.

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  • sidm
    sidm over 4 years ago in reply to sidm

    Hello , any suggestions on my last request ?

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  • masamasa
    masamasa over 4 years ago in reply to sidm

    what is your request?

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  • sidm
    sidm over 4 years ago in reply to masamasa

    Hi all,

    Can you please suggest a way to change the pin names and nets names of a .mcm file ? I have a completely routed design where I need to rename all the netnames and pin names one by one. (Pin names for the die as well as BGA).

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