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pin location

Yemelya
Hello,

How can I find location of the pin/pins for particular instance? For example I can find the instance itself by dbInstLoc, but I am not sure how to locate pins of this cell.

Thanks!
-Boris

 

Parents
  • turtlej9

    Hi Boris,

    We've got a procedure we use that incorporates the dbTermLoc that you've already identified. After sourcing this proc, you'd just have to type "queryInstPin_loc myInstance/pin"


    proc queryInstPin_loc { { instPin "" } } {
      loguse procedures queryInstPin_loc
    # queryInstPin_loc: returns the location of the <inst>/<pin>
      if { $instPin == "" } {
        puts ""
        puts "   Usage:  queryInstPin_loc  <inst>/<pin>"
        puts ""
        puts "      returns the location of pin <inst>/<pin>"
        puts ""
      } else {
        set scale [pdsDBU2Micron 1]
        set numbFields [regsub -all "/" $instPin " " inst_pin]
        set pin [lindex $inst_pin $numbFields]
        regsub -all {[[$^?+*()|\\]} $pin {\\&} escPin
        regsub -all "/${escPin}$" $instPin "" inst
        set instPtr [dbGetInstByName $inst]
        if { $instPtr == "0x0" } {
          puts "Didn't find inst $inst"
        } else {
          set termPGPtr "0x0"
          set termPtr [dbGetTermByName $instPtr $pin]
          if { $termPtr == "0x0" } {
            set termPGPtr [dbGetPGTermByName $instPtr $pin]
          }
          if { $termPtr == "0x0"  &&  $termPGPtr == "0x0" } {
            puts "Didn't find signal or power pin named $pin on inst $inst"
          } else {
            if { $termPGPtr == "0x0" } {
              set pinLoc [dbTermLoc $termPtr]
              set dbXY  [dbTermLoc $termPtr]
             } else {
              set pinLoc [dbTermLoc $termPGPtr]
              set dbXY  [dbTermLoc $termPGPtr]
            }
            set dbX [lindex $dbXY 0]
            set dbY [lindex $dbXY 1]
            set x [expr $dbX * $scale]
            set y [expr $dbY * $scale]
            return "$x $y"
            return $pinLoc
          }
        }
      }
    }

Reply
  • turtlej9

    Hi Boris,

    We've got a procedure we use that incorporates the dbTermLoc that you've already identified. After sourcing this proc, you'd just have to type "queryInstPin_loc myInstance/pin"


    proc queryInstPin_loc { { instPin "" } } {
      loguse procedures queryInstPin_loc
    # queryInstPin_loc: returns the location of the <inst>/<pin>
      if { $instPin == "" } {
        puts ""
        puts "   Usage:  queryInstPin_loc  <inst>/<pin>"
        puts ""
        puts "      returns the location of pin <inst>/<pin>"
        puts ""
      } else {
        set scale [pdsDBU2Micron 1]
        set numbFields [regsub -all "/" $instPin " " inst_pin]
        set pin [lindex $inst_pin $numbFields]
        regsub -all {[[$^?+*()|\\]} $pin {\\&} escPin
        regsub -all "/${escPin}$" $instPin "" inst
        set instPtr [dbGetInstByName $inst]
        if { $instPtr == "0x0" } {
          puts "Didn't find inst $inst"
        } else {
          set termPGPtr "0x0"
          set termPtr [dbGetTermByName $instPtr $pin]
          if { $termPtr == "0x0" } {
            set termPGPtr [dbGetPGTermByName $instPtr $pin]
          }
          if { $termPtr == "0x0"  &&  $termPGPtr == "0x0" } {
            puts "Didn't find signal or power pin named $pin on inst $inst"
          } else {
            if { $termPGPtr == "0x0" } {
              set pinLoc [dbTermLoc $termPtr]
              set dbXY  [dbTermLoc $termPtr]
             } else {
              set pinLoc [dbTermLoc $termPGPtr]
              set dbXY  [dbTermLoc $termPGPtr]
            }
            set dbX [lindex $dbXY 0]
            set dbY [lindex $dbXY 1]
            set x [expr $dbX * $scale]
            set y [expr $dbY * $scale]
            return "$x $y"
            return $pinLoc
          }
        }
      }
    }

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