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 Need space between all cells during placement in Encounter - how? 

Last post Tue, Mar 26 2013 12:12 PM by lcaley. 4 replies.
Started by lcaley 26 Mar 2013 10:28 AM. Topic has 4 replies and 817 views
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  • Tue, Mar 26 2013 10:28 AM

    • lcaley
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    • Joined on Wed, Jan 16 2013
    • Posts 7
    • Points 110
    Need space between all cells during placement in Encounter - how? Reply

    Good afternoon everybody, 

    I'm trying to find a way to add space between all of my cells when they are placed using Encounter. The process I'm working out of only has one metal layer, so I need to leave plenty of room for routing with M1 and poly bridges only. I have found Cell, Instance, and Module Padding in the documentation, but they do not seem to work reliably. Perhaps I am configuring it incorrectly? It seems that no matter how I tweak the settings, I still get 5-10% of the cells abutted together, with plenty of spare space in the floorplan for them to spread out. Any ideas? 

    Thanks! 

    • Post Points: 20
  • Tue, Mar 26 2013 11:13 AM

    • Kari
    • Top 10 Contributor
    • Joined on Tue, Jul 15 2008
    • Cary, NC
    • Posts 693
    • Points 14,155
    Re: Need space between all cells during placement in Encounter - how? Reply

    can you post your specifyCellPad command?

     

    • Post Points: 20
  • Tue, Mar 26 2013 11:21 AM

    • lcaley
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    Re: Need space between all cells during placement in Encounter - how? Reply

    I'm still in the early stages of the project. I'm still trying to get the "how do I?'s" out of the way, so this spacing is by no means scientific. The documentation said a wildcard (*) was valid, and since I need spacing on every cell, that seemed to be the way to go. Here's what I entered:

     specifyCellPad * 10

     

    Edit: <code></code> tags don't work on this board, apparently. 

     

    • Post Points: 20
  • Tue, Mar 26 2013 11:36 AM

    • Kari
    • Top 10 Contributor
    • Joined on Tue, Jul 15 2008
    • Cary, NC
    • Posts 693
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    Re: Need space between all cells during placement in Encounter - how? Reply

    so you'll have seen that this command adds space on the right side of the cells. but if a cell is flipped on the y-axis, then the padding is on the left, and that's how you can add up with two cells abutted.

    try:

    specifyCellPad * -left 10 -right 10 

    • Post Points: 20
  • Tue, Mar 26 2013 12:12 PM

    • lcaley
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    • Points 110
    Re: Need space between all cells during placement in Encounter - how? Reply
    That seems to have done it. Thank you so much!
    • Post Points: 5
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Started by lcaley at 26 Mar 2013 10:28 AM. Topic has 4 replies.