TAS5768M output stopping by MCLK of ON/OFF and freq changing

Hi,

Changing MCLK,TAS5768 stop ouput anything.

PLL is enable setting and MCLK=SCK.

This our procedure of stopping output.

1)Power ON device　

2)MCLK=12.288MHz,soud is good.

3)MCLK=OFF, and change MCLK go to 12.00MHz,then sound is not anything.

4)MCLK=OFF, and change MCLK go back to 12.288MHz ,then sound is not anything too

MCLK is influenceof AMP output?

And the difference of step2 and 4 is Page0 Reg0x6E-0x70.

What does it mean these Register value.

PLL=ENABLE,MCLK=SCK

http://www.ti.com/lit/ds/symlink/tas5768m.pdf

If you have any question, pls let me know.

Regards,

kyt