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how to report net names connected to transistors for a channel connected block

SatendraMaurya

Hi,

I was trying to see if there is a way to list out all the nets connected to a channel connected block. Say we have Nand gate deep in the hierarchy and I know what input-a is connected to but I need to know what net is connected to input-b or this Nand and also what the output driving to.

Satendra

Parents
  • Marben

    Hi Satendra,

    Try this SKILL code.

    Hope this help.

    procedure(nt()

    cv = geGetEditCellView()
    netName = "input-b"
    net=dbFindNetByName(cv netName)
    when(net
    foreach(instTerm net~>instTerms
    printf("\n Pin %s of instance name %s , cellname = %s \n" instTerm~>name instTerm~>inst~>name instTerm~>inst~>cellName)
    ) ;for
    ) ;when


    ) ;proc

    Best regards,

    Marben

Reply
  • Marben

    Hi Satendra,

    Try this SKILL code.

    Hope this help.

    procedure(nt()

    cv = geGetEditCellView()
    netName = "input-b"
    net=dbFindNetByName(cv netName)
    when(net
    foreach(instTerm net~>instTerms
    printf("\n Pin %s of instance name %s , cellname = %s \n" instTerm~>name instTerm~>inst~>name instTerm~>inst~>cellName)
    ) ;for
    ) ;when


    ) ;proc

    Best regards,

    Marben

Children
  • SatendraMaurya
    in reply to Marben

    Hi Marben,

    Thanks for the reply. I was wondering if this is possible using any tcl code or tool that can do it. Since I will have too many nets to extract connection info, SKILL might be too slow and interfacing it with perl might be tedious.

    Satendra

  • Andrew Beckett
    in reply to SatendraMaurya

    Satendra,

    I'm not sure why you think SKILL would be slow but Tcl (even assuming that such an interface existed) would be faster. SKILL is actually quite fast (it's byte code compiled) and I rather doubt Tcl (or perl) would be any quicker.

    You might be able to use the probe assistant in the schematic editor to explore connectivity but it's unclear precisely what you want to do...

    Andrew.

  • SatendraMaurya
    in reply to Marben

    Hi Marben,
    You code only gives the terminals its connected to. But for ccb, I need to traverse further down through fets until it hits gate or power or gnd.

    Satendra

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