AM3358: MCASP ACLKXCTL sync mode?

Hi,

I am trying to connect audio codec with integrated ADC and DAC to AM3358. I am following MCASP design guide: 

It mentions to enable MCASP's SYNC mode by accessing ACLKXCTL register.

Here is how this register looks like:

I found the register in kernel/sound/soc/ti/davinci-mcasp.h file. In this file ACLKXCTL register has a default value of 0xb0 which is 10110000.

Is this already in SYNC mode? If not, then how do I change the value to make it go into SYNC mode?

Thank you