Answer
Embedded MotionApps 2.0 as well as Motion Driver use the Digital Motion Processor (DMPâ„¢) located on the sensor device to perform 6-axis MotionFusion. The Embedded MotionApps Platform MotionFusion reads sensor fusion results from the DMP using the FIFO buffer.
For 9-axis operation in the MotionFit SDK the micro is required to integrate compass data as well as some calibration routines.