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（2）带CPU的Motor Contorller：FCM8531之前是Fairchild的产品，现转到Spintrol旗下，支持Sensorless Field-Oriented Control (FOC），51 core。或IR（现被Infineon收购）的IRMCF143S，也支持Sensorless Field-Oriented Control (FOC），51 core。
