View from the top side (with MosFets). Further infos can be also found in the schematics PDF file.

Notes:
CLK has to be connected to GND on v1.3 to use the internal clock.
Hints:
DCO pin is an output, keep attention that it is not connected to SDO, because some mainboards bridge these pins (also called SLP + RST).SD_MODE pin of the jumper has to be set to GND with a wire (SD_MODE=0).
See Schematics.
Hints:
DCO pin is an output, keep attention that it is not connected to SDO, because some mainboards bridge these pins (also called SLP + RST).SD_MODE pin has an external pull-down resistor (SD_MODE=0).
See Schematics.| Pin | Function |
|---|---|
| . | Power Supply |
| GND | Ground |
| VM | Motor Supply Voltage (10-35V or 10-50V) |
| VIO | Logic Supply Voltage (3.3-5V) |
| . | Motor Outputs |
| M1A | Motor Coil 1 |
| M1B | Motor Coil 1 |
| M2A | Motor Coil 2 |
| M2B | Motor Coil 2 |
| . | Control Inputs |
| STEP | Step-Signal Input |
| DIR | Direction-Signal Input |
| EN | Enable Motor Outputs: GND=on, VIO=off |
| . | TMC5160 SPI Mode |
| SDO/CFG0 | MISO - Serial Data Output |
| SDI/CFG1 | MOSI - Serial Data Input |
| SCK/CFG2 | SCLK - Serial Clock Input |
| CS/CFG3 | SS - Chip Select Input (no internal pull-up resistor) |
| DCEN/CFG4 | dcStep Enable Input, pd (GND=off) |
| DCIN/CFG5 | dcStep Gating Input, pd |
| DCO | dcStep Ready Output |
| SD_MODE | Mode: Motion Controller (VIO=off) |
| SPI_MODE | Mode: SPI, pd (VIO=on) |
| CLK | Clock input (GND=int. clock) |
| DIAG0 | Diagnostics Output 0 (50k pull-up to 2.5V) |
| DIAG1 | Diagnostics Output 1 (100k pull-down to GND) |
pd - pin with pull-down resistor (to GND)
| SD_MODE | SPI_MODE | Mode |
|---|---|---|
| GND | GND | UART enabled |
| GND | VIO | SPI and Motion Controller enabled |
| VIO | GND | Standalone |
| VIO | VIO | SPI enabled |