If this is like other TMC chips, sure it uses step and direction pins, but you have to set it up first via spi, something thats not n the current reprap firmwares..
So It will never be a drop in replacement for a pololu as you need to connect the spi bus.
But as mentioned the DICE standard does have SPI on its connectors...
So It will never be a drop in replacement for a pololu as you need to connect the spi bus.
But as mentioned the DICE standard does have SPI on its connectors...