Max Hold reset time

I'd like to use the Abs Max Hold block with a DC source to periodically read the peak value of a signal with a microcontroller over SPI from an ADAU1452, like this:

The microcontoller reads the output of AbsMax1 (param name "heldMax")

Then it resets the peak hold by setting DC1 to 0  and then to 1 again.

The quesion is, how long do I need to hold DC1 at 0 to reset the hold function.

Additionally, given that I can read heldMax can I just reset the hold by setting heldMax to 0, and what side effects might there be?

Thanks

Alex