OMAP_L138 USB0_VDDA12 decoupling cap

Hi

Can anyone tell me how the capacitor on pin USB0_VDDA12, the internal USB 1.2V  LDO, should be sized/specified - as far as I can tell, it doesn't warrant a mention in the datasheet or TRM?

I'm reluctant to just copy the LogicPD EVM, as rightly or wrongly the designer chose to ignore many TI datasheet recommendations in other areas of this PCB.

Thanks, Jon.