Contacted Freescale support
Well the TFC Shield motor Control Board and Interface/Motor Driver Board is the same board, my bad.
If I understood it right I can not connect with USB the i.mx53 QSB to FRDM-KL25Z so that this two boards can communicate, or is it possible?
I want to have an control panel on my pc and track the values of the sensors that will be on my rc-car?
What is the best solution in your opinion.
How I was thinking about it:
have the complete TFC-KIT connected (through FRDM-KL25Z- usb) with the i.mx53 QSB which will have either an wifi or an Xbee that will sent the data to my main PC.