Finding the leaf clock nets in the design

I'm not sure I completely understand the question. Are you saying that you want all of your clocks to use the NDR, but some of them are not using it? 

Make sure you have the NDR description at the top of your .ctstch file:

#-- Wide_wire Route Type --
RouteTypeName DBLWIDE
TopPreferredLayer 4
BottomPreferredLayer 3
NonDefaultRule DBLWIDE
End

Then make sure that each clock section uses it:

RouteClkNet    YES
RouteType      DBLWIDE
LeafRouteType  DBLWIDE

 If you want the leaf nets to use a different rule, you can specify that, but the rule needs to be defined at the top of the .ctstch file.

Hope this helps,

- Kari

 Hi kari,

Ya what you are saying is completely correct. I have not applied the NDR for leaf nets. So I wanted to cross verify if all the leaf nets have not been applied NDR. So I wanted to know how do we find or dump only the leaf clk nets in the design.

Thanks and Regards

Suhas

 So, is your LeafRouteType set to Regular, or not set at all? If it's not set at all, I *think* the default is to follow the RouteType, wich means your leaf nets will be double wide. If you've set the leaf type to Regular, then I would just check a few for sanity and be done, personally. If you check a few, you can be fairly certain that what was done to those was done to all of them. But, I did come across a script that should get the leaf nets for you.

get_leaf_nets.tcl

proc leafNet { outRpt  clockTerm  } {
set f [open $outRpt w]
set  x  [get_cells -hier -filter "is_sequential == true"]
foreach_in_collection y $x {
set inst [get_object_name $y]
if { [dbGetTermByName [dbGetInstByName $inst] $clockTerm ] } {
puts $f "[dbNetName [dbTermNet [dbGetTermByName [dbGetInstByName $inst] $clockTerm ]]]"
 }
}

close $f
}

Would the above script help ?

--Vishnu