TM4C123FE6PM Datasheet, PDF (1044/1370 Pages) Texas Instruments – Tiva™ TM4C123FE6PM Microcontroller

Controller Area Network (CAN) Module
Register 12: CAN IF1 Mask 1 (CANIF1MSK1), offset 0x028
Register 13: CAN IF2 Mask 1 (CANIF2MSK1), offset 0x088
The mask information provided in this register accompanies the data (CANIFnDAn), arbitration
information (CANIFnARBn), and control information (CANIFnMCTL) to the message object in the
message RAM. The mask is used with the ID bit in the CANIFnARBn register for acceptance
filtering. Additional mask information is contained in the CANIFnMSK2 register.
CAN IFn Mask 1 (CANIFnMSK1)
CAN0 base: 0x4004.0000
CAN1 base: 0x4004.1000
Offset 0x028
Type RW, reset 0x0000.FFFF
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
reserved
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
MSK
Type RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Reset
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Bit/Field
31:16
15:0
Name
reserved
MSK
Type
RO
RW
Reset Description
0x0000
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.
0xFFFF
Identifier Mask
When using a 29-bit identifier, these bits are used for bits [15:0] of the
ID. The MSK field in the CANIFnMSK2 register are used for bits [28:16]
of the ID. When using an 11-bit identifier, these bits are ignored.
Value
0
1
Description
The corresponding identifier field (ID) in the message
object cannot inhibit the match in acceptance filtering.
The corresponding identifier field (ID) is used for
acceptance filtering.
1044
Texas Instruments-Production Data
June 12, 2014