Welcome in the forum, Janos!
Did you already read among all the other elaborates the AN64846? It does not tell about CSX, but explains what CSD is.
As opposed to you I cannot find references to CSX except some pin namings.
What did you find is the difference between CDS and CSX??
PS: Where in Germany are you located, Janos. I live near Bremen.
Hi Bob and thanks for your welcome :)
AN64846 explains in 2.2.2 how CSX works (mutual capacitance is another name for it). The main difference is, that one Tx and one Rx electrode is used in CSX, which is exactly what I need in my design. It is also called CapSense Crosspoint in AN85951, chapter 2.2.2.
CSD uses only one electrode, which is expected to couple against ground.
PS: I come from Berlin
The touchpad seemingly works as CSX. For more specific information create a support case. At top of this page -> Support...
I think CSX feature are just available on PSoC 4S devices, but i'm not sure if you can use it on other devices. The new CapSense on 4S devices had a big upgrade from the older one (i haven't test it but Cypress say so :D).
https://iotexpert.com/2016/03/10/psoc4000s-csx-mutual-capsense-buttons-part-1/ In this link Alan talks about it.
"...When I looked at that board closely I remembered that the buttons were put there to support the new Capsense functionality of the PSoC4000s family. Inside of Cypress we call the new feature “CSX”, but its real name is “Mutual Capacitance”..."