The receiver core is capable of generating interrupts from many different events:
- Ping Watchdog Timeout (PING_WD_TO): This event indicates that the ping watchdog timer has timed out. The receiver has not received a valid frame within the time period specified in the RX_PING_WD_REF register.
- Frame Watchdog Timeout (FRAME_WD_TO): This event indicates that the frame watchdog timer has timed out. The conditions of this timeout are set using the RX_FRAME_WD_CTRL register. As soon as the start of frame phase is detected, the frame watchdog counter starts counting from 0. The end of frame phase must complete by the time the watchdog counter reaches the reference value. If this does not happen, the watchdog times out and this event is generated. If this event occurs, the receiver must undergo a soft reset and subsequent resynchronization to resume proper operation.
- CRC Error (CRC_ERR): This error indicates that a CRC error has occurred. A CRC error is generated when the received CRC and the computed CRC do not match.
- Frame Type Error (TYPE_ERR): This error indicates that an invalid frame type has been received. If this error occurs, the receiver must undergo a soft reset and subsequent resynchronization to resume proper operation.
- End-of-Frame Error (EOF_ERR): This error indicates that an invalid end-of-frame bit pattern has been received. If this error occurs, the receiver must undergo a soft reset and subsequent resynchronization to resume proper operation.
- Receive Buffer Overrun (BUF_OVERRUN): This event indicates that an overrun condition has occurred in the receive buffer.
- Receive Buffer Underrun (BUF_UNDERRUN): This event indicates that an underrun condition has occurred in the receive buffer. This condition occurs when software reads an empty buffer.
- Frame Done (FRAME_DONE): This event indicates that a valid frame has been received without error.
- Error Frame Received (ERR_FRAME): This event indicates that an error frame has been received.
- Ping Frame Received (PING_FRAME): This event indicates that a ping frame has been received.
- Frame Overrun (FRAME_OVERRUN): This event indicates that a new frame has been received while the FRAME_DONE flag was still set.
- Data Frame Received (DATA_FRAME): This event indicates that a data frame has been received.
- Ping Tag Matched (PING_TAG_MATCH): This event indicates that a ping frame with a matching tag has been received.
- Data Tag Matched (DATA_TAG_MATCH): This event indicates that a data frame with a matching tag has been received.
- Error Tag Matched (ERROR_TAG_MATCH): This event indicates that an error frame with a matching tag has been received.