THE TMC5160 OFFERS THREE BASIC MODES OF OPERATION: MODE 1: Full Featured Motion Controller & Driver All stepper motor logic is completely within the TMC5160. No software is required to control the motor – just provide target positions. Enable this mode by tying low pin SD_MODE. MODE 2: Step & Direction Driver An external high-performance S-ramp motion controller like the TMC4361 or a central CPU generates step & direction signals synchronized to other components like additional motors within the system. The TMC5160 takes care of intelligent current and mode control and delivers feedback on the state of the motor. The microPlyer automatically smoothens motion. Tie SD_MODE high. MODE 3: Simple Step & Direction Driver The TMC5160 positions the motor based on step & direction signals. The microPlyer automatically smoothens motion. No CPU interaction is required; configuration is done by hardware pins. Basic standby current control can be done by the TMC5160. Optional feedback signals allow error detection and synchronization. Enable this mode by tying pin SPI_MODE low and SD_MODE high.