How to find instances connected to specific pin

Navendra,

I don't have any code to do this to hand, but if you can use IC616, you can probe the net using the probe command in the schematic editor, and then use the probes assistant to see what it is connected to. The Probes Assistant is new in IC616. You can also export a CSV file of everything that it is connected to.

Probing you can do in any release though.

Andrew.

 Hi Navendra,

You could try something like this:

targetPinName = "test<3>"

cvId = geGetEditCellView()
list_instId = list()

foreach( instId cvId~>instances
  if( instId~>objType=="inst" && instId~>purpose=="cell" then
    connectionFound = 0
    foreach( connId instId~>conns
      if( connId~>net~>name==targetPinName then
        connectionFound = 1
      )
    )
    if( connectionFound==1 then list_instId=append(list_instId list(instId)) )
  )
)

Hi NiallDuncan,

Thanks for your response. 

If schematic have pins like, POR, EN, Edge, OT<3> , Test<0:5>.

Your scricpt will works for only to find instances for POR, EN, Edge, OT<3>. This can't find for Test<3> or Test<2> etc.

As per your basic thought, I modified this to work perfectly is--

:***********************************************

reqinstlist=nil

targetpinname="Test<3>"

cvId=geGetEditCellView()

foreach(instId cvId~>instances

if(instId~>objType=="inst" && instId~>purpose=="cell" then
kk = nil
kk1 = nil
conn_names=nil
conn_names = instId~>conns~>net~>name
foreach(conn_name conn_names
index= length(parseString(conn_name "<"))
if(index >= 2 then
kk = dbProduceMemName(conn_name)
kk1=append(kk kk1)
conn_names = remove(conn_name conn_names)
))
conn_names = append(conn_names kk1)

foreach(conn_name conn_names
when(conn_name==targetpinname

reqinstlist=cons(instId reqinstlist)
)
)
)
)
 

;**********************************************************

Thank you 

Narendra

hi andrew,

         i was searching for a skill code that will

    ---- that will search all input and output pin/ports of a schematic .. and then checks each pins/ports are conneced to an instance (antenna diode) or not ?

       ( ex ::-- if a schematic have 10 inputs then each should have an anteenna diode in schematic .....if not flag message while check and save)

--- check an instance (EX :antenna diode) , which is connected to each input and output pins/ports of a schematic..

     ----- if designer forgot to add  antenna diode in any pin .. it should be warned by a message when he will check and save ..

     -----in this way designer can not leave any input or output that is connected to diode .....

   . ----- please provide a code to do it

SRNAYAK said:

. ----- please provide a code to do it

I'm sorry, but I respond to posts in this forum in my spare time. Implementing this very specific check is nothing something I have already written, and nor is it something I have the bandwidth to do right now (I suspect it will need some back and forth to refine the specification if things are unclear).

I'm sure that we (Cadence) would be happy to implement something like this for you as a service - please contact your account team (your sales executive, for example) who can discuss the requirement with you in more detail.

Kind Regards,

Andrew.