Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

How to make Assura ignore tie-downs during LVS ?

Status
Not open for further replies.
jimito13

jimito13

Advanced Member level 1
Joined
Nov 17, 2008
Messages
464
Helped
130
Reputation
262
Reaction score
113
Trophy points
1,323
Location
Greece
Activity points
4,929
Hello,

I am running LVS and i have no errors but the run cannot complete successfully as it gives the following error :

*ERROR* Device 'tdndsx(Generic)' on Layout is unbound to any Schematic device
*ERROR* Device 'tdpdnw(Generic)' on Layout is unbound to any Schematic device.
*ERROR*UnBound devices found

I do not have tie downs in my schematic but they exist in the layout.Is there any way to tell the assura not to consider the tie-downs during the check?My design kit IBM cms9flp.

Thanks in advance for any helpful answer.
 

Re: tie down LVS error

Your wells need to have their equivalent schematic representation as well. This is usually specific to your DK.
 

Re: tie down LVS error

can you be more specific?i am talking aboun tie downs (inversely biased diodes is the electrical symbol from the IBM design kit) and not about wells...if i understood your opinion is to place tie downs to the schematic as well,right?Is there any way to "tell" assura (with a switch or something else) to bypass this check?A colleague told me that there is a way to do that with calibre but he didn't known the way to do this with assura...
 

Re: tie down LVS error

You already know that the orthodox method is to include it in your schematic. Why try to cheat LVS?
 

Re: tie down LVS error

jimeece13 said:
Hello,

I am running LVS and i have no errors but the run cannot complete successfully as it gives the following error :

*ERROR* Device 'tdndsx(Generic)' on Layout is unbound to any Schematic device
*ERROR* Device 'tdpdnw(Generic)' on Layout is unbound to any Schematic device.
*ERROR*UnBound devices found

I do not have tie downs in my schematic but they exist in the layout.Is there any way to tell the assura not to consider the tie-downs during the check?My design kit IBM cms9flp.

Thanks in advance for any helpful answer.
Click to expand...

can you try adding a cell name in the ?ignoreCell list under the "Modify avParameters? I dont have the ibm kit, so I can't give you an example...
 

    jimito13

    jimito13

    Points: 2
    Helpful Answer Positive Rating
Re: tie down LVS error

great wpchan05!absolutely helpful answer,i did what you suggested and worked :) Thanks again!
 

Re: tie down LVS error

Does anybody know how to tell mentor calibre to ignore tie-downs during LVS run?I am using the latest calibre version 2009.

Thanks in advance.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top