DRV8307 PWM DUTY

HI

I have some question about PWM of DRV8307.

1. PWM duty cycle range (datasheet: 0~100%)

    what is minimum duty for stop? and maximum duty(recommended condition)?

2. datasheet:

If it is changed while spinning, use gradual steps (for example, 1% increments), because a large
change in the commanded duty cycle can cause a large step in commutation, which can lock up the motor. This
behavior is typical with other industry devices.

  : 2~5% is not available??