When a remote frame is received, three different
configurations of the matching message object are considered:
- Dir = 1 (direction = transmit), RmtEn = 1, UMask
= 1 or 0
The TxRqst bit of this message object is
set at the reception of a matching remote frame. The rest of the message object
remains unchanged. - Dir = 1 (direction = transmit), RmtEn = 0, UMask
= 0
The remote frame is ignored, this message
object remains unchanged. - Dir = 1 (direction = transmit), RmtEn = 0, UMask
= 1
The remote frame is treated similar to a
received data frame. At the reception of a matching remote frame, the TxRqst bit
of this message object is reset. The arbitration and control bits (Identifier +
IDE + RTR + DLC) from the shift register are stored in the message object in the
Message RAM and the NewDat bit of this message object is set. The data bytes of
the message object remain unchanged