ringing suppression circuitry (RSC)

ringing suppression circuitry (RSC)

The RSC as specified in CiA 601-4 for CAN FD nodes comprises the bus-state change detection circuitry, the switch controller, and the differential internal resistance RRSC. If used, the RRSC is added to the bus-lines at a dominant­ to-recessive state change, changing the overall bus-line impedance. RRSC is switched-off after a defined time period. RSC can be implemented in the CAN transceiver, or connected to it as an external circuitry. It is recommended to locate RSCs on nodes with strong ringing, with long wire harness, or on nodes located far from the network termination.