There are several kinds of fatal errors from which the RX cannot recover from without intervention. These include loss of alignment, wrap around errors, and too many retries.
To recover from a fatal error, the signal CTL_RX_RETRANS_ERRIN must be
negated and the signal CTL_RX_RETRANS_RESET must be asserted for
several LBUS clock cycles and then negated. This action marks any open packets as having
an error. Thereafter, the RX will continue to wait for the expected sequence or start as
if it was reset depending upon the setting of
CTL_RX_RETRANS_RESET_MODE.