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iMX6 Dual PCIe Question

Question asked by David Boudreau on Jan 15, 2016
Latest reply on Jan 15, 2016 by igorpadykov

I am going to use the PCIe function on the iMX6 Dual Processor. I plan on using the iMX6 signal CLK1_N (ball C7) for the PCIe signal REFCLK- and the iMX6 signal CLK1_P (ball D7) for the PCIe signal REFCLK+. Does this differential clock signal have to be AC coupled? They are AC coupled on the Sabre PCBA but i"m not sure if that is correct.