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Next, A1V2 on the KSZ9031, the 1.2V filtered analog rail. Decidedly quieter, 9.043 mV p-p / 1.44 mV RMS.

Some spikes at expected harmonics of 125 MHz and also one at 1.125 GHz which is interesting. Maybe that's what the internal PLL runs at?

Anyway, looks fine to me.