Stats

  • Locked Locked
  • Replies 4
  • Subscribers 92
  • Views 15017
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

sroute options for connecting power domain ring to power pad

archive

Hi
   
    i am trying to use some of the options of sroute command, is there any option where i can connect the Power ring of a power domain to the Power Pad.
    

thanks
deepak.


Originally posted in cdnusers.org by deepak
Parents

  •  Hi Eric,
        I am not sure about the configuration file your are asking about,

            I had some problem in connecting the power domain rings to a list of power pads (different source ), so what I did is,

        Listed all the instances of the pads that needs to be connected to the power domain ring,
        Defined the global nets for the tool to understand the logical connectivity (Power domain net names will be different to that of default domain net names)
        Used sroute command to connect the power ring to the selected power pad.


    Example:
    ClearGlobalNets
    set power_nets {VDD1  VDD2}
    set GND_nets {VSS1  VSS2 }

    set pad_inst_VDD1 { __PAD_981  __PAD_1148 __PAD_1130 __PAD_1096 }
    set pad_inst_VDD2 { __PAD_1004 __PAD_994 __PAD_967 __PAD_933 }
    set pad_inst_VSS1 { __PAD_1156 __PAD_1155 __PAD_1133 __PAD_1132}
    set pad_inst_VSS2 { __PAD_1005 __PAD_995 __PAD_966 __PAD_934 }

    foreach i $pad_inst_VDD1  {
    globalNetConnect [lindex $power_nets 0] -type pgpin -pin VDD -singleInstance $i
    }
     
    foreach i $pad_inst_VSS1  {
    globalNetConnect [lindex $GND_nets 0] -type pgpin -pin VSS -singleInstance $i
    }

    sroute -deleteExistingRoutes -noBlockPins -noPadRings -noCorePins -noStripes -padPinAllGeomsConnect -padPinMinLayer 4 -padPinMaxLayer 4 -jogControl { preferWithChanges differentLayer } -nets {VDD1 VDD2 VSS1 VSS2}



            the above script will connect the list of instances to the defined global nets.

    Regards
    Deepak.

Reply

  •  Hi Eric,
        I am not sure about the configuration file your are asking about,

            I had some problem in connecting the power domain rings to a list of power pads (different source ), so what I did is,

        Listed all the instances of the pads that needs to be connected to the power domain ring,
        Defined the global nets for the tool to understand the logical connectivity (Power domain net names will be different to that of default domain net names)
        Used sroute command to connect the power ring to the selected power pad.


    Example:
    ClearGlobalNets
    set power_nets {VDD1  VDD2}
    set GND_nets {VSS1  VSS2 }

    set pad_inst_VDD1 { __PAD_981  __PAD_1148 __PAD_1130 __PAD_1096 }
    set pad_inst_VDD2 { __PAD_1004 __PAD_994 __PAD_967 __PAD_933 }
    set pad_inst_VSS1 { __PAD_1156 __PAD_1155 __PAD_1133 __PAD_1132}
    set pad_inst_VSS2 { __PAD_1005 __PAD_995 __PAD_966 __PAD_934 }

    foreach i $pad_inst_VDD1  {
    globalNetConnect [lindex $power_nets 0] -type pgpin -pin VDD -singleInstance $i
    }
     
    foreach i $pad_inst_VSS1  {
    globalNetConnect [lindex $GND_nets 0] -type pgpin -pin VSS -singleInstance $i
    }

    sroute -deleteExistingRoutes -noBlockPins -noPadRings -noCorePins -noStripes -padPinAllGeomsConnect -padPinMinLayer 4 -padPinMaxLayer 4 -jogControl { preferWithChanges differentLayer } -nets {VDD1 VDD2 VSS1 VSS2}



            the above script will connect the list of instances to the defined global nets.

    Regards
    Deepak.

Children
No Data

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.