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List all cells in fanout/fanin cone of a node

ssuhas

 Hi,

I wanted  know how do we list all cells in fanout/fanin cone of a node in encounter.

Do we have any command to get the above else can i get to the way to start of writing the tcl script for the above.

 

Thanks

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  • BobD

    There may be an easier way to do this, but you could loop through each of the pins in the fanout cone and append the connected net to a list:

    set nets {}
    foreach_in_collection pin [all_fanout -from [get_ports din[14]]] {
      set net [all_connected $pin]
      set netName [get_property $net hierarchical_name]
      if {[lsearch $nets $netName] == -1} {
        lappend nets $netName
      }
    }
    Puts "Found [llength $nets] net(s):"
    Puts "$nets"
     

    Example:
    Found 17 net(s):
    {din[14]} {din[14]} n_4744 {din[14]} n_4840 {din[14]} n_4936 {din[14]} n_5032 {din[14]} n_5128 {din[14]} n_5224 {din[14]} n_5320 {din[14]} n_5416

    -Bob

Reply
  • BobD

    There may be an easier way to do this, but you could loop through each of the pins in the fanout cone and append the connected net to a list:

    set nets {}
    foreach_in_collection pin [all_fanout -from [get_ports din[14]]] {
      set net [all_connected $pin]
      set netName [get_property $net hierarchical_name]
      if {[lsearch $nets $netName] == -1} {
        lappend nets $netName
      }
    }
    Puts "Found [llength $nets] net(s):"
    Puts "$nets"
     

    Example:
    Found 17 net(s):
    {din[14]} {din[14]} n_4744 {din[14]} n_4840 {din[14]} n_4936 {din[14]} n_5032 {din[14]} n_5128 {din[14]} n_5224 {din[14]} n_5320 {din[14]} n_5416

    -Bob

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