DRV2625: Initialization time

Part Number:DRV2625

Hi Team,

my customer is interested in using the DRV2625. After a meeting one question came up where we need clarification from the experts.

1. How long does it take until the Initialization Procedure described at 9.3.1 in the datasheet is finished. Background is that the application is battery operated. In order to safe battery life it could be considered that the DRV2625 will be turned off completely. So how long would it take until the Initialization is finished and the actuator can be driven with a waveform the library. 
2. Do the DRV2625 and the DRV2605 differentiate in this department

Please let me know what your thoghts are on this. Looking forward for  your answers.

Kind regards 

Dierk Bronner