Lantronix DSTni-EX Manual de usuario descargar pdf (Pagina 77)

Table 5-26. RxMessage: RTR

BIT

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

OFFSET

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.

1 2 ... 72 73 74 75 76 77 78 79 80 81 82 ... 94 95

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