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How to sort pins in a particular order?

NAADHAN

Hi,

           I have a done a floor-plan and now the pin section need to be sorted and placed.... Initially this was sorted by name. But i have a specific order in which i want them to appear... So how should i tell the tool(encounter) that i want the pins to be placed in this specific order??..

There are around 900 pins....

 

Thanks & Regards,

NAADHAN

Parents

  •  Say the "odd" layers are vertical and you want to place your 900 pins on the top of your block.  When you use edit pin, you can only specify a single layer (see below):

     editPin -honorConstraint 1 -unit TRACK -fixedPin 1 -fixOverlap 1 \
       -cell cell_name -pin [list the ordered lists of 900 pins] \
      -spreadType CENTER -side TOP -layer 3 -spacing 2

    If the block was somewhat skinny and you don't have room for all 900 pins, you may want to divide the pins between layers 3 and 5 (maybe even through 7 into the mix if there still isn't enough room).  Thus, if you needed to split the 900 out, you'd have to:

     editPin -honorConstraint 1 -unit TRACK -fixedPin 1 -fixOverlap 1 \
       -cell cell_name -pin [list the ordered lists of first 450 pins] \
      -spreadType CENTER -side TOP -layer 3 -spacing 2

     editPin -honorConstraint 1 -unit TRACK -fixedPin 1 -fixOverlap 1 \
       -cell cell_name -pin [list the ordered lists of last 450 pins] \
      -spreadType CENTER -side TOP -layer 5 -spacing 2

     

    Make sense?
    JG

Reply

  •  Say the "odd" layers are vertical and you want to place your 900 pins on the top of your block.  When you use edit pin, you can only specify a single layer (see below):

     editPin -honorConstraint 1 -unit TRACK -fixedPin 1 -fixOverlap 1 \
       -cell cell_name -pin [list the ordered lists of 900 pins] \
      -spreadType CENTER -side TOP -layer 3 -spacing 2

    If the block was somewhat skinny and you don't have room for all 900 pins, you may want to divide the pins between layers 3 and 5 (maybe even through 7 into the mix if there still isn't enough room).  Thus, if you needed to split the 900 out, you'd have to:

     editPin -honorConstraint 1 -unit TRACK -fixedPin 1 -fixOverlap 1 \
       -cell cell_name -pin [list the ordered lists of first 450 pins] \
      -spreadType CENTER -side TOP -layer 3 -spacing 2

     editPin -honorConstraint 1 -unit TRACK -fixedPin 1 -fixOverlap 1 \
       -cell cell_name -pin [list the ordered lists of last 450 pins] \
      -spreadType CENTER -side TOP -layer 5 -spacing 2

     

    Make sense?
    JG

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