On Mon, Mar 30, 2015 at 08:16:22PM -0700, Scott Branden wrote:

The audio PLL is embedded in the audio block and only used
by the audio block. The audio PLL registers are also in the middle of 
the audio register map.

When you say it's only used by the audio block do you mean to say that
the audio block exposes no clock signals other than the bit and frame
clocks?