How to set sampling rate of ADRV9009 to 245.76MHz?

Excuse me, 

The default sample rate in bare-metal projects of adrv9009 is 122.88MHz. After checking the UG1295 pdf on page 106, I found that the device supports 122.88MHz, 184.32MHz and 245.76MHz. How to set it to 245.76MHz? Do you have same apps or pdfs to indroduction about it. 

Thanks in advance.