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 sroute + open nets + warnings 

Last post Mon, Jun 11 2012 5:36 AM by selvam27. 1 replies.
Started by dinac 22 May 2012 12:16 AM. Topic has 1 replies and 2007 views
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  • Tue, May 22 2012 12:16 AM

    • dinac
    • Not Ranked
    • Joined on Tue, Aug 5 2008
    • Posts 9
    • Points 105
    sroute + open nets + warnings Reply

    Hi all,

    I am trying to route the followpin after the addstripe without stdcell placement.I have macro block with powerring. 

    The sroute the followpins are generated well, but  for one of the memory cell, the vdd! of the followpin is open and does not extends until the power of the memory block.  I tried most of the options I knew, but couldnt succeed.

     I use these options:

     sroute -connect { corePin floatingStripe } -layerChangeRange { M1 M5 } \
    -connectAlignedBlockAndPadPin { blockPinAsTarget } -blockPinTarget { nearestRingStripe } -checkAlignedSecondaryPin 1  \
    -allowJogging 1 -crossoverViaBottomLayer M1 -allowLayerChange 1 \
    -targetViaTopLayer M5 -crossoverViaTopLayer M5 -targetViaBottomLayer M1 \
    -nets { gnd! vdd! }

    sroute completes with following warnings:

     **WARN: (ENCSR-1253):   Net vdd! does not have standard cells to be routed. Please check net list.
    **WARN: (ENCSR-1253):   Net gnd! does not have standard cells to be routed. Please check net list.
    **WARN: (ENCSR-468):    No core cells defined in COMPONENTS section
     and/or   No core cells defined in SPECIALNETS vdd!
    **WARN: (ENCSR-468):    No core cells defined in COMPONENTS section
     and/or   No core cells defined in SPECIALNETS vdd!
    CPU time for FollowPin 1 seconds
    **WARN: (ENCSR-468):    No core cells defined in COMPONENTS section
     and/or   No core cells defined in SPECIALNETS gnd!
    **WARN: (ENCSR-468):    No core cells defined in COMPONENTS section
     and/or   No core cells defined in SPECIALNETS gnd!
     

    Thanks,

    Dinesh 


    • Post Points: 20
  • Mon, Jun 11 2012 5:36 AM

    • selvam27
    • Top 500 Contributor
    • Joined on Thu, Jun 7 2012
    • Posts 18
    • Points 255
    Re: sroute + open nets + warnings Reply

    hai dinesh

    Use following sroute command to avoid that warnings:

    sroute -connect { blockPin padPin padRing corePin floatingStripe } -layerChangeRange {M1 M2 } -blockPinTarget { nearestRingStripe nearestTarget } -padPinPortConnect { allPort oneGeom } -checkAlignedSecondaryPin 1 -blockPin useLef -allowJogging 1 -crossoverViaBottomLayer M1 -allowLayerChange 1 -targetViaTopLayer M8 -crossoverViaTopLayer M5 -targetViaBottomLayer M1 -nets { gnd! vdd! }

     

    • Post Points: 5
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Started by dinac at 22 May 2012 12:16 AM. Topic has 1 replies.