In the design reference of IMX6UL Evk, Y503 used as a solution for the current problem of version (TO1.0) and it is supplied with DCDC_3V3. However, the chip errata document, recommends using VDD_HIGH_IN for the supply (ERR009455). So, which one should be used?
The second point is, C505 is 18pf. I guess this relates to the Load capacitance of the oscillator. Is it true? I mean C506 and C505 should have the same value?