CCS/TMS570LS3137: Using Flexray between two processors on the same board

Hi,

It is not possible to connect a FlexRay controller directly to the physical flexray bus. While the FlexRay controller works with binary signals, the physical flexray bus uses differential signal transmission. This role is covered for the most part by the FlexRay transceiver. The FlexRay transceiver converts the logical signal stream received from the FlexRay controller into a differential signal stream. In the other direction, it converts the physical differential signal stream received from the FlexRay bus into a logical signal stream.

If the 2 CPUs are located in the same PCB and close each other, your may not need the transceivers.