ZHCSH31B August 2017 – February 2018 DRV10987
The DRV10987 device converts the various types of speed command into a speed command value (SpeedCmd) as shown in Figure 44. By reading SpeedCmd, the user can observe PWM input duty cycle (PWM digital mode), analog voltage (analog mode), or I2C data (I2C mode). This value is calculated as shown in Equation 14.
Equation 14 shows how the speed command as a percentage can be calculated and set in SpeedCmd.