LM3S2965-IQC20-A0T Luminary Micro, Inc., LM3S2965-IQC20-A0T Datasheet - Page 434

• Manufacturer Part Number: LM3S2965-IQC20-A0T
• Description: Microcontroller
• Manufacturer: Luminary Micro, Inc.

Controller Area Network (CAN) Module
CAN IF1 Arbitration 2 (CANIF1ARB2)
CAN0 base: 0x4004.0000
CAN1 base: 0x4004.1000
Offset 0x034
Type R/W, reset 0x0000.0000
434
Reset
Reset
Type
Type
Bit/Field
31:16
12:0
15
14
13
MsgVal
R/W
RO
31
15
0
0
Register 18: CAN IF1 Arbitration 2 (CANIF1ARB2), offset 0x034
Register 19: CAN IF2 Arbitration 2 (CANIF2ARB2), offset 0x094
This register, along with CANIFnARB1, holds information for acceptance filtering.
R/W
RO
Xtd
30
14
0
0
reserved
MsgVal
Name
Xtd
R/W
Dir
ID
RO
Dir
29
13
0
0
R/W
RO
28
12
0
0
R/W
RO
Type
27
11
R/W
R/W
R/W
R/W
0
0
RO
R/W
RO
26
10
0
0
0x0000
Reset
0x0
0x0
0x0
0x0
R/W
RO
25
0
9
0
Preliminary
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.
Message Valid
0: The message object is ignored by the message handler.
1: The message object is configured and will be considered by the
message handler within the CAN controller.
All unused message objects should have this bit cleared during
initialization and before clearing the Init bit in the CANCTL register.
The MsgVal bit must also be cleared before any of the following bits
are modified or if the message object is no longer required: the ID bit
fields in the CANIFnARBn registers, the Xtd and Dir bits in the
CANIFnARB2 register, or the DLC bits in the CANIFnMCTL register.
Extended Identifier
0: The 11-bit Standard Identifier will be used for this message object.
1: The 29-bit Extended Identifier will be used for this message object.
Message Direction
0: Receive. On TxRqst, a Remote Frame with the identifier of this
message object is transmitted. On reception of a Data Frame with
matching identifier, that message is stored in this message object.
1: Transmit. On TxRqst, the respective message object is transmitted
as a Data Frame. On reception of a Remote Frame with matching
identifier, TxRqst bit of this message object is set (if RmtEn=1).
Message Identifier
Used with the ID bit in the CANIFnARB1 register to create the message
identifier. ID[28:0] is the Extended Frame and ID[28:18] is the Standard
Frame.
R/W
RO
24
0
8
0
reserved
R/W
RO
23
0
7
0
R/W
RO
22
ID
0
6
0
R/W
RO
21
0
5
0
R/W
RO
20
0
4
0
R/W
RO
19
0
3
0
R/W
RO
18
0
2
0
June 04, 2007
R/W
RO
17
0
1
0
R/W
RO
16
0
0
0