generating 48KHz and 44.1KHz for DIT

I am using an AM1808 and using the MCASP is a S/PDIF interface. I would like to support both 44.1KHz and 48KHz clock rates. Unfortunately I have a 12MHz crystal so I think I am in trouble - yes? No way to divide down the 12MHz to support either lock rate?

Is there a clock source I can use that would support both rates?

Cheers

Calum