The DRV10987D provides two options to enter sleep mode:

Option 1

1. Provide a non-zero value to the speed control register. For example, write 100 to register 0x30, speedCtrl[8:0].
2. Set the I²C OverRide bit to 1. That is, write 1 to register 0x30, speedCtrl[15]
3. In analog mode, be sure SPEED pin voltage is less than VEN_SL for tEN_SL_ANA. In PWM mode, make sure SPEED pin is low (V < VDIG_IL) for tEN_SL_PWM.
4. Provide the value of zero to the speed control register to enter sleep mode. That is, write 0 to register 0x30, speedCtrl[8:0].

Option 2

1. Provide a non-zero value to the speed control register. For example, write 100 to register 0x30, speedCtrl[8:0].
2. Set the I2C OverRide bit to 1. That is, write 1 to register 0x30, speedCtrl[15]
3. In analog mode, be sure SPEED pin voltage is less than VEN_SL for tEN_SL_ANA. In PWM mode, make sure SPEED pin is low (V < VDIG_IL) for tEN_SL_PWM.
4. Provide the value of zero to the speed control register to enter sleep mode. That is, write 0 to register 0x30, speedCtrl[8:0].