BIGTREETECH TMC2209 V1.2

TMC2209-V1.2 manual Shenzhen Biqu Technology Co., Ltd.
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5.2、Pin Mode
J1
Mode
J2
Mode
1
（EN）Enable
1
（VM）Power voltage
2
（MS1）Microstep setting
2
（GND）Ground
3
（MS2）Microstep setting
3
（A2）Phase A
4
（PDN）UART
4
（A1）Phase A
5
（PDN）UART
5
（B1）Phase B
6
（CLK）clock
6
（B2）Phase B
7
（STEP）Pulse input
7
（VCC_IO）Logic voltage
8
（DIR）Direction input
8
（GND）Ground
DIAG
Diagnostic and StallGuard output. Hi level upon stall
detection or;driver error. Reset error condition by ENN=high.
VREF
Analog reference voltage for current scaling or reference
current for;use of internal sense resistors (optional mode)
INDEX
Configurable index output. Provides index pulse.