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

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
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