MC Motor Driver Circuitry
The MC motors are 4-phase stepper motors, driven by double-phase, and controlled by
BBG020.
There are four MC motors: MC1 to MC4. To select a motor to operate, set the motor's
corresponding signal of MCON1 through MCON4 to HIGH. Only one motor may be operated at
a single time; it is impossible to simultaneously run two or more motors.
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