Subject: Communication between TMC429 and multiple stepper-motor-drivers TMC26x
I have a question concerning the communication between a TMC429 and, for example, 3 TMC26x-drivers.
On the datasheet of the TMC429 (http://www.trinamic.com/tmc/media/Downl ... asheet.pdf
), figure 3-4 on page 5, there is a connection between SDO of the third TMC26x with the SDI_S of the TMC429. The SDO's of the other TMC26x's are not connected. How can these TMC26x's communicate with the TMC429?