List all cells in fanout/fanin cone of a node

The all_fanout and all_fanin commands are available in Encounter for this.  For example:

encounter 22> all_fanout -only_cells -from [get_pins DTMF_INST/TDSP_CORE_INST/TDSP_CORE_GLUE_INST/i_955/Y]
DTMF_INST/TDSP_CORE_INST/TDSP_CORE_GLUE_INST/i_955
0x83

Let us know if we could help applying those commands to your scenario.

Hope this helps,
Bob

Hi bob, 

It did help me out but I also wanted to get to know how do we find the fanin and fanout nets for the given cell.

The commands mentioned by you gives me the the cells to which the fanin and fanout nets are connected to.But I wanted the names of fanin and fanout nets too.

Thanks

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