"waken" can mean "cause to wake" or "stop sleeping"
I waken at 6.00am = I stop sleeping at 6.00 am
I wakened early = I stopped sleeping early
Waken me at 6.00 am = [someone else] wake me up at 6.00am
This may not help you, but wake, awake and waken are an interesting survival of differing Middle English forms of the same word. So basically you can choose which you want to use!
Student or Learner