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Hi all, well first of all I'm very novice using Allegro PCB Editor but have some experience with Orcad Layout. I have to design a 516 BGA package for a freescale MPC8313E and I'm using the Package Symbol Wizard of the PCB editor with the default bgapad.pad but after compiling the symbol into a .psm file I get the error "No match for begin or end pad layer in layout" and the symbol appears without pads.
Does anybody know what I'm doing wrong? And, Is there another tool that comes along with PCB Editor for designing BGA packages?
Thank's in advance.
Hi, The padstack bgapad.pad is incorrect and has no top pad features and no soldermask. Create your own smd padstack and it works fine. KP
But the default padstack "bgapad.pad" should have top layer, soldermask_top layer and pastemask_top features defined on it!!I think the library file has been edited.Pls check your padstack by opening in a "Pad designer" which can be found in your installation files.Other option is try running DBDoctor on your padstack file.Hope this helps.Best Regards,Kishore
Thank's all, I have another question regarding the pads. Well, I have created the BGA footprint and the pads seem to be void, I mean I only see void circles instead of filled pads. I have reviewed the classes and subclasses against a TI BGA footrpint and the classes\subclasses => Pin\Top and Pin\Soldermask_Top are activated. I wonder what I'm doing wrong.Thank's in advance.
Go to "Setup"->"Drawing options" and on the "Display" tab, enable the check box "Filled pads".