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Forums > Custom IC > Custom IC Electrical Design

Subject: Error in Stimuli File
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gunturikishore28
Posts: 24
Online: User is Offline
3/16/2006 6:08 PM  
I am trying to add a VPWL source through a stimuli file rather than adding thorugh graphical interface in Analog Design Environment....It shows error with "[]" brackets telling me tht "[" should be followed bt # symbol. ..Actually I am trying to add a time/voltage pairs through wave=[...]  in vsource and type=pwl option....and when I change them to () from [] the file read in goes correctly but the spectre simulator while circuit read-in says syntax error. Can somebody throw some suggestion for me to do this without errors.

My cadence version is IC5.1
EricCDN
Posts: 17
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3/17/2006 10:59 AM  
Hi, Can you put in the exact error message from spectre? Without that I cannot be sure what the issue is. Here's a guess though: put the escape character before the [ For example, change this: _vin (in 0) vsource wave=[ 0 0 1u 2 ] type=pwl to this: _vin (in 0) vsource wave=\[ 0 0 1u 2 ] type=pwl Regards, Eric
AMSamirj
Posts: 10
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3/20/2006 10:04 AM  
Here is a typical syntax for a vpwl

V4 (net06 net07) vsource type=pwl wave=[ 0 0.0 1 1.0 2 2.0 ]

If this fails for you, make sure to name the include file something.scs (the scs suffix is key). Otherwise you need to add the following header to the include file:

simulator lang=spectre
gunturikishore28
Posts: 24
Online: User is Offline
5/14/2006 11:37 PM  
Hi EricCDN,

Thank You for your suggestion. It works with your given modification with "\". I think the conversion tool provided with Cadence does not include that "\" while converting from SPICE to Spectre stimulus files. That might be creating problem. Thnaks all for your suggestions again.
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Forums > Custom IC > Custom IC Electrical Design > Error in Stimuli File


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