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Hi, We want to set up our Allegro Design Entry(Orcad) libraries so that when forward annotating to Allegro SI (Specctraquest), all parts come with an IBIS and Espice model automatically attached. It is a real hassle to have to manually attach them each time you create a .brd file I have tried using the SIGNAL_MODEL = attribute in Orcad, in conjunction with a Specctraquest .dml library containing suitably named parts, but with no joy Anybody got any ideas on how to set this up?
Jdunn, You might receive more prompt replies for your OrCAD issues on the orcad community site at http://www.orcad.com Moderator
Hi, I can get this to work by doing the following 1. Translate the ibis model into dml format using PCB SI or SignalXplorer 2. In Allegro Design Entry CIS (Capture CIS) you add the model name to the part using the SIGNAL_MODEL property. e.g., from the attached ibis model you can reference the model names ALVC244_DGW, ALVC244_DW, ALVC244_NS or ALVC244_PW depending on the package type. 3. During the Tools, Create Netlist you need to go into setup, edit and add the following line to the [ComponentInstanceProps] section SIGNAL_MODEL=YES Now you can create the netlist and the model will be attached to the component providing your paths points to the libraries. Best regards, Ole Ejlersen Technical Service Manager Nordcad Systems A/S
Thank you This works just fine now.
Hi, You're welcome, did you get it to select the correct voltage model also? If so, how?
No, I am just working to get a load of Espice models of passives added at the moment so I don't need to select different ibis driver models according to voltage (just yet)