Device is designed specifically for step motor control, alerting the
user when the motor has lost steps during motion which typically occurs
when the motor's motion has been obstructed, or a system failure has
occurred. The chip actively monitors the targeted and actual position,
and detects any number of motion errors that can result in a stall
condition. Automatic stall detection operates continuously once it has
been initialized by the user. To initiate stall detection, the host
simply specifies the number of encoder counts/step. Processor is
driven by a host microprocessor using an 8- or 16-bit parallel bus,
CANbus 2.0B, or an asynchronous serial port.
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