HI allI am going to do one of my first big layout im Allegro layout .the electronic Eng is also new to OrCAD.i would like to know what are the most common attributes defined in OrCAD and passed to Allegro.where can i find a list of attributes and their function?which of those attributes can be also passed to the router.please share with me any relevant info.Thank's
What release are you on? This makes a big difference. The file you need to look at is called allegro.cfg it is in the C:\Cadence\SPB_15.5.1\tools\capture directory. There are several issues with release 15 and beyond since cadence has gone to the constraint manager model. The biggest being the constraint manager isn't supported in the ORCAD flow. So you will need to decide where you want to manage your constraints Allegro or ORCAD. I have found that you can not manage from both. The flow completely falls apart when you have electrical properties defined in ORCAD and you change something in allegro. If you do decide that you want to manage those electrical properties in ORCAD my advice to you would be to make a copy of the allegro.cfg and put it in a place that won't get whacked by installing an ISR. You will need to align it with the current list of properties in allegro as it is not done in the recent installs. For example I am on 15.5.1 and in the released allegro.cfg from Cadence there is a property DIFFP_LENGTH_TOL being called to pass, well this property has been gone from the allegro flow for quite some time I believe 14.2, I have complained about this since the 15.0 release and even filed PCR's but it appears this is still broken.