Quote Originally Posted by AlexDoran View Post
Now that makes perfect sense to me, thanks for explaining it i have learnt from your post, you obviously have a much higher understanding than me in general about the technology involved. I think the TMC2100 can take a 1/16 input, and re-pulse (is that even a word?) it to 1/256, but in a way that you still get the 1/16 resolution.

I believe the "Silent Mode" the TMC2100's provide is only really suitable for smaller printers / Delta Printers, and don't handle higher accelerations well, but just for context this is a good video.
I've got to admit, people who claim microstepping increases accuracy, are one of my pet hates.

The term you're probably looking for is gearing or scaling. With modern drives, there's a lot of internal scaling going on. The input simply tells the drive the distance you want the motor to move, be that a 256th microstep, or a full step. The drive then takes that, and runs it through however many switching phases it takes to move to that position, which in itself will depend on the speed things are moving at, as once you increase speed, the benefits of microstepping diminish, so the number of switching phases is usually reduced to ensure maximum motor performance (often called morphing).