Pin 19 - Enable Output (Orange) - (low = 13V, high = 18v, high-z = off) Pin 20 - 22 khz enable (Yellow)
Pin 22 - Enable A PWM (Blue) Pin 24 - Forward A (Yellow) Pin 25 - Reverse A (Orange) Pin 16 - Quadature A (Purple) Pin 17 - Quadature B (Grey)
Pin 21 - Enable A PWM (Purple) Pin 26 - Forward A (Red) Pin 27 - Reverse A (Brown) Pin 14 - Quadature A (Blue) Pin 15 - Quadature B (Green)