FEATURES
● Constant-current chopping function
   (Frequency fixed, separate-oscillation)
● 2-phase input
   (ENA input is useful for half step drive)
● Selectable slow/fast current decay for
   improved micro stepping
● A noise cancel function is provided
   (No externally attached filter needed)
● Protection for penetration current
● Built-in thermal alarm
● Built-in flywheel diodes