SPRUIZ1B July 2023 – August 2024 TMS320F28P650DH , TMS320F28P650DK , TMS320F28P650SH , TMS320F28P650SK , TMS320F28P659DH-Q1 , TMS320F28P659DK-Q1 , TMS320F28P659SH-Q1
The silent mode can be used to analyze the traffic on the CAN bus without affecting the CAN by sending dominant bits (for example, acknowledge bit, overload flag, active error flag). The CAN is still able to receive valid data frames and valid remote frames, but the CAN does not send any dominant bits. However, the received frames are internally routed to the CAN Core.
Figure 25-4 shows the connection of signals CAN_TX and CAN_RX to the CAN core in silent mode. Silent mode can be activated by setting the Silent bit in test register (CAN_TEST), to 1. In ISO 11898-1, the silent mode is called the bus monitoring mode.