TMC2225 DATASHEET (Rev. 1.15 / 2023-FEB-16)
26
5.3 Sequencer Registers
The sequencer registers have a pure informative character and are read-only. They help for special
cases like storing the last motor position before powering off in battery powered applications.
MICROSTEPPING CONTROL REGISTER SET (0X60…0X6B)
R/W Addr n Register
R 0x6A 10 MSCNT
9
R 0x6B + MSCURACT
9
Description / bit names
Microstep counter. Indicates actual position
in the microstep table for CUR_A. CUR_B uses
an offset of 256 into the table. Reading out
MSCNT allows determination of the motor
position within the electrical wave.
bit 8… 0: CUR_B (signed):
Actual microstep current for
motor phase B (sine wave) as
read from the internal sine wave
table (not scaled by current
setting)
bit 24… 16: CUR_A (signed):
Actual microstep current for
motor phase A (co-sine wave) as
read from the internal sine wave
table (not scaled by current
setting)
Range [Unit]
0…1023
+/-0...255
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