Help in understanding Microstep table

Hi, all



I'm trying to develop a step motor controller using trinamic chips.

(www.trinamic.com <http://www.trinamic.com/> ).

So far I understood everything, but I have a doubt about a microstep table.



Source example is here ->
http://www.trinamic.com/tmcweb/downloads/tmc236_example_MD.c



This chip as a 4 bit DAC, thus a 16 micro step resolution. So, why is the
table 64 positions?

Should be only 16 right? I believe that this as to do with the sin/cos
functions. That means

That this table is a complete sin/cos function (16*4). If this is right how
do I move one

full step using only 16 microsteps (in the max resolution) ?



Boy I'm confused.



Thanks in advance



Joaquim











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