I'm trying to figure out the Xmega clocks. I have come to the conclusion that the output of the ULP is 1 kHz, and only 1 kHz. The parts of the Xmega A datasheet that say otherwise have been put there by the devil to confuse me. The datasheet keeps referring to the 32 kHz ULP. There are two more 32 kHz oscillators to choose from, and mentioning the 32 kHz ULP simply adds to the confusion.
If the only output of the ULP is 1 kHz, the oscillator frequency is irrelevent. For all I know, it may oscillate at 1 GHz. If there is a way to get a 32 kHz output from the ULP, please show me.
Otherwise I suggest Atmel can eliminate clock confusion by changing the datasheet.
Here is the devil's handiwork: