LP5562: Questions regarding using LP5562 internal clock

Hi 

we got some questions regarding using LP5562 internal clock, can you help clarify below question for LP5562.

1. Can we use the led driver LP5562 without external 32khz clock?
2. If we used internal clock, could we set led driver to standby mode/normal mode/powersave mode

3. Can we set LP5562 to powersave mode and control the led behavior?

4. What number of the quiescent current and shutdown current is in the LP5562? I can't find this information on the datasheet.

5. Can we tied CLK_32K to ground if we plan to use internal clock.

6. For current consumption, if we used internal clock to LP5562, does the current consumption higher than using an external clock?

7. Please help review our schematic for LP5562 below 

Thank you