05-15-2011 01:52 PM
Hi Folks,
I'm using the evaluation version of CDS 11.0.1 and I have met some issues. I don't know whether they're my faults or bugs thus I'd ask some experts. This topic might be useful for others to collect similar questions.
The major problem is when I'm trying to connect the pads of a TQFP-48 package I either can't do or get DRC errors. I have attached the corresponding file.
There is a minor problem I found. If you switch to the 3D view, you'll find a rendering error on the TQFP-48 packages pins. It only happens when you place the package to the opposite side of the board.
Many thanks for the patience and assistance.
Kind Regards
Tony
Solved! Go to Solution.
05-16-2011 09:16 AM
Set Trace clearens 0.127мм
05-16-2011 12:22 PM
TW is 0.127mm and now I set TC to 0.127mm. No difference. I even tried TC 0.0625mm, same issue.
I've uploaded the updated file.
05-16-2011 01:24 PM
Check up a clearance
05-16-2011 02:08 PM
Ah ok. Many thanks! I didn't look for it in the table I've just selected everything and set the global values. 😄
05-16-2011 06:11 PM - edited 05-16-2011 06:16 PM
"There is a minor problem I found. If you switch to the 3D view, you'll find a rendering error on the TQFP-48 packages pins. It only happens when you place the package to the opposite side of the board."
I see this quite often, mostly with pins that don't rotate correctly. I continue to struggle with this and can't find reliable ways to make it work. Fortunatetly the 3D imaging is just a 'nice' thing and not required to be spotless to get a design done.
This also happens on the top side. I quite often have trouble with parts that have more than one pin style. To get a different 3D model the pins need to be grouped and the 3D options set for the group. Pin rotation just seems totally random in those cases.
I'd be interested if someone can tell how to make it work correctly.
05-16-2011 06:24 PM
Yes, that feature is fortunatelly not vital but it would be nice to show customers how the ordered PCB will look so they can let us know on time if something isn't quite alright or give a thumb if so.