DRV8711: DRV8711 problems exting sleep mode

Part Number:DRV8711

Hi,

I'm using a DRV8711 and I have problems. The problem apear when 

I am using the DRV8711 IC for motor control and have problems working with the sleep mode. The problem appears when I execute the following sequence:  

- I leave sleep mode.

- I make a delay of 1ms. As indicated in the datasheet

- I apply a STEP pulse to the driver.

- I enter SLEEP mode again.

After performing this sequence the motor does not move.

Even when I activate the DRV8711 (I exit the sleep mode) sometimes the engine seems to retreat one pulse.

If, instead, instead of 1 STEP pulse, I apply 10 STEP pulses, the motor moves.

It seems that when exiting the sleep mode, the DRV8711 IC could not activate the pulse-to-pulse motor.