If1 And F2 Arbitration Registers (Can If1Arb, Can If2Arb); If2 Mask Register (Can If2Msk) [Offset = 0X124]; If1 Arbitration Register (Can If1Arb) [Offset = 0X108]; If1 And If2 Mask Registers Field Descriptions - Texas Instruments Concerto F28M35 Series Technical Reference Manual

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CAN Control Registers
31
30
29
28
MXtd
MDir
Rsvd
R/WP-
R/WP-
R-1
1
1
15
LEGEND: R = Read; WP = Protected Write (protected by Busy bit); -n = value after reset
Bit
Field
31
MXtd
30
MDir
29
Reserved
28-0
Msk[28:0]

23.15.16 IF1 and F2 Arbitration Registers (CAN IF1ARB, CAN IF2ARB)

The bits of the IF1 and IF2 arbitration registers mirror the arbitration bits of a message object. The function
of the relevant message objects bits is described in
NOTE: While Busy bit of the IF1 or IF2 Command Register is one, the IF1 or IF2 register set is write
protected.
Figure 23-36. IF1 Arbitration Register (CAN IF1ARB) [offset = 0x108]
31
30
29
28
MsgVa
Xtd
Dir
l
R/WP-
R/WP-
R/WP-
0
0
0
15
LEGEND: R = Read; WP = Protected Write (protected by Busy bit); -n = value after reset
1558
M3 Controller Area Network (CAN)
Figure 23-35. IF2 Mask Register (CAN IF2MSK) [offset = 0x124]
Table 23-19. IF1 and IF2 Mask Registers Field Descriptions
Value
Description
Mask Extended Identifier
0
The extended identifier bit (IDE) has no effect on the acceptance filtering.
1
The extended identifier bit (IDE) is used for acceptance filtering.
When 11-bit ("standard") identifiers are used for a message object, the identifiers of received data
frames are written into bits ID[28:18]. For acceptance filtering, only these bits together with mask
bits Msk[28:18] are considered.
Mask Message Direction
0
The message direction bit (Dir) has no effect on the acceptance filtering.
1
The message direction bit (Dir) is used for acceptance filtering.
Reserved
Identifier Mask
0
The corresponding bit in the identifier of the message object is not used for acceptance filtering
(don't care).
1
The corresponding bit in the identifier of the message object is used for acceptance filtering.
Copyright © 2012–2019, Texas Instruments Incorporated
Msk[28:16]
R/WP-0x1FFF
Msk[15:0]
R/WP-0xFFFF
Section
23.14.1.
ID[28:16]
R/WP-0
ID[15:0]
R/WP-0
SPRUH22I – April 2012 – Revised November 2019
www.ti.com
16
0
16
0
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