LM3S2B93 Datasheet, PDF (922/1194 Pages) Texas Instruments – Stellaris® LM3S2B93 Microcontroller

Controller Area Network (CAN) Module
Register 20: CAN IF1 Message Control (CANIF1MCTL), offset 0x038
Register 21: CAN IF2 Message Control (CANIF2MCTL), offset 0x098
This register holds the control information associated with the message object to be sent to the
Message RAM.
CAN IF1 Message Control (CANIF1MCTL)
CAN0 base: 0x4004.0000
CAN1 base: 0x4004.1000
Offset 0x038
Type R/W, reset 0x0000.0000
31
30
29
28
27
26
25
24
23
reserved
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
0
0
0
15
14
13
12
NEWDAT MSGLST INTPND UMASK
Type R/W
R/W
R/W
R/W
Reset
0
0
0
0
11
TXIE
R/W
0
10
RXIE
R/W
0
9
8
RMTEN TXRQST
R/W
R/W
0
0
7
EOB
R/W
0
22
21
20
RO
RO
RO
0
0
0
6
5
4
reserved
RO
RO
RO
0
0
0
19
18
17
16
RO
RO
RO
RO
0
0
0
0
3
2
1
0
DLC
R/W
R/W
R/W
R/W
0
0
0
0
Bit/Field
31:16
15
Name
reserved
NEWDAT
Type
RO
R/W
Reset
0x0000
0
Description
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
New Data
Value
0
1
Description
No new data has been written into the data portion of this
message object by the message handler since the last time
this flag was cleared by the CPU.
The message handler or the CPU has written new data into
the data portion of this message object.
14
MSGLST
R/W
0
Message Lost
Value
0
1
Description
No message was lost since the last time this bit was
cleared by the CPU.
The message handler stored a new message into this
object when NEWDAT was set; the CPU has lost a message.
This bit is only valid for message objects when the DIR bit in the
CANIFnARB2 register is clear (receive).
13
INTPND
R/W
0
Interrupt Pending
Value
0
1
Description
This message object is not the source of an interrupt.
This message object is the source of an interrupt. The
interrupt identifier in the CANINT register points to this
message object if there is not another interrupt source with
a higher priority.
922
January 20, 2012
Texas Instruments-Production Data