Protocol Exception Event State

Versal ACAP Technical Reference Manual (AM011)

Document ID
AM011
Release Date
2022-04-26
Revision
1.4 English

The controller enters the CAN FD protocol exception event (PEE) state if the controller receives the "res" bit as recessive in the CAN FD frame (provided MSR [DPEE] bit is not set = 1). The controller exits this state after detecting a sequence of 11 nominal recessive bits on the CAN bus, and as per the protocol specification, the transmit and receive error count remains unchanged in this state.