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Hi Minh,
The MX53 QSB-R PCB is compliant with IPC-A-600 Class 2, this standard specifies board thickness. The stackup of the board, which specifies the layer thickness, is included in the layout. I'm attaching a PDF of the stackup and fab notes, these include everything you need. Unfortunately, I don't have the IPC-A-600 document, but this is something your manufacturer must know, so they can provide some guidance about it.
Best regards.
Jorge.
Hi Minh,
Always follow the recommendations fo the PCB manufacturer. Each manufacturer has a different process and different set of materials. And the materials used may vary depending on what the manufacturer has on hand. Give the manufacturer some tartget values for: overall thickness, number of layers, and desired trace impedances. Ask them to provide to you a recommended board stack up and trace thicknesses. Then use these in your design. The initial stackup information provided by the manufacturer for the Freescale QuickStart board is contained in chapter 8 of the Hardware Reference Manual for i.MX53 Quick Start (available for download from Freescale).
Cheers.
Hi Minh,
The MX53 QSB-R PCB is compliant with IPC-A-600 Class 2, this standard specifies board thickness. The stackup of the board, which specifies the layer thickness, is included in the layout. I'm attaching a PDF of the stackup and fab notes, these include everything you need. Unfortunately, I don't have the IPC-A-600 document, but this is something your manufacturer must know, so they can provide some guidance about it.
Best regards.
Jorge.
Hi Phuong
As you mention, Inside the Gerbers Files and the Layout file as well, there is a table named "IMPEDANCE REQUIREMENTS" together with the PCB Material and the weigh of copper for each layer from the StackUp, you should with your PCB Manufacturer agreed in to match as close as possible to get these impedance in your traces, and define the proper thickness of you pcb.
hope this can help you.
-ni