/START in AD7770,AD7771, AD7779

In the datatsheet description of AD7771, /START is tied to DGND if it is NOT used.

On the other hand, in the datasheet description in AD7770 and AD7779, /START is tied to IOVDD if it is NOT used. 

CAN I connect ~START to IOVDD when I don't use it?

Does this meen I only need to set the fixed Low or High Voltage to /START when I don't use it?

Adding tags
[edited by: Lluis at 11:54 AM (GMT 0) on 20 Jan 2020]