Lantronix DSTni-EX manual 26. RxMessage RTR, 27. Rx Message RTR Register Definitions

Table 5-26. RxMessage: RTR

BIT	15	14		13		12		11	10	9	8	7	6	5	4	3	2	1	0
OFFSET												3C
FIELD			///						AFI_2	AFI_1	AFI_0	///		RTR	IDE	DLC_3	DLC_2	DLC_1	DLC_0
RESET	0	0	0		0		0		0	0	0	0	0	0	0	0	0	0	0
R/W	R/W	R/W	R/W		R/W		R/W		R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W

	Table 5-27. Rx Message: RTR Register Definitions
Bits	Field Name	Description
15:11	///	Reserved
10:8	AFI[2:0]	Acceptance Filter Indicator
		Indicates which acceptance filter(s) accepted the incoming message. If
		more than one filter accepted the message, more than one bit is set.
7:6	///	Reserved
5	RTR	Remote Bit
4	IDE	Extended Identifier Bit
3	DLC[3:0]	Data Length Code
		Invalid values are transmitted as they are.

Table 5-28. Rx Message: Msg Flags

BIT	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
OFFSET									3E
FIELD					///				Rx Fifo2	Rx-Fifo1	Rx Fifo0			///		Msg Aval
RESET	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R	R	R	R/W	R/W	R/W	R/W	R/W

	Table 5-29. Rx Message: Msg Flags Register Definitions
Bits	Field Name	Description
15:8	///	Reserved
7:5	Rx_Fifo[2:0]:	Rx FIFO Status
		These two Read Only flags indicate how many messages are
		waiting in the queue.
		000	= empty
		001	= 1/4 full
		010	= 1/2 full
		011	= 3/4 full
		100	= full
		Other values are not applicable.
4:1	///	Reserved
0	Msg Avail	Message Available
		MsgAval goes HIGH when a new message is available. Writing a ‘ 1’ clears
		this flag and indicates that the message has been read. If another message
		is available, this flag is not cleared and the new message from RxMsg1
		buffer is accessible.
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