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iMX53 PCB impedance control

Question asked by Minh Phuong on Sep 7, 2012
Latest reply on Sep 7, 2012 by Mark Middleton
Hi all,  I wan to reuse the iMX53 QSB-R PCB stack up in oder to design a new custome board, but I don't known detail of the stack up such as PCB thickness and the dielectric thickness for each layer... I saw there are some different point between the allegro PCB design board stackup and the detail information from their gerber files. Which is correct that I should follow and ask the PCB manufacturer for PCB impedance controlling?  Any suggestions ?  Best regard