[ADV739x] How to control the DAC output (Enable / Disable).

Hi,

I have a question related to enable/disable the DAC output of ADV739x.

When we want to control the DAC output enable/disable, how should we control the register settings?
For example,
At first, ADV739x works normally. The CVBS outputs correctly.
Then, when we want to disable the CVBS output, can we control the "DAC 1: power on/off" register (0x00 bit[4] = 0) only?
After that, when we want to enable the CVBS output again, can we control the "DAC 1: power on/off" register (0x00 bit[4] = 1) only?
Like above, can we control only the "DAC : power on/off" register for that?
Or
Do we have to reset the ADV739x (Software reset 0x17 bit[1]) and write all register settings again for re-enabling CVBS output?

Thank you!
Best regards.
Tamu