IF2MSK

The Message Object Mask Bits together with the arbitration bits are used for acceptance filtering of incoming messages. Note: While IFxCMR.Busy bit is one, the IF1/2 Register Set is write protected.

Module Instance	Base Address	Register Address
`can0`	`0xFFC00000`	`0xFFC00124`
`can1`	`0xFFC01000`	`0xFFC01124`

Offset: 0x124

Access: RW

Important: To prevent indeterminate system behavior, reserved areas of memory must not be accessed by software or hardware. Any area of the memory map that is not explicitly defined as a register space or accessible memory is considered reserved.

Bit Fields
31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
`MXtd` `RW 0x1`	`MDir` `RW 0x1`	`Reserved`	`Msk` `RW 0x1FFFFFFF`
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
`Msk` `RW 0x1FFFFFFF`

IF2MSK Fields

Bit

Name

Description

Access

Reset

MXtd

When 11-bit (standard) Identifiers are used for a Message Object, the identifiers of received Data Frames are written into bits ID28 to ID18. For acceptance filtering, only these bits together with mask bits Msk28 to Msk18 are considered.

Value	Description
0x0	The extended identifier bit (IDE) has no effect on the acceptance filtering.
0x1	The extended identifier bit (IDE) is used for acceptance filtering.

RW

0x1

MDir

Value	Description
0x0	The message direction bit (Dir) has no effect on the acceptance filtering. Handle with care setting IFxMSK.MDir to zero.
0x1	The message direction bit (Dir) is used for acceptance filtering.

RW

0x1

28:0

Msk

0 = The corresponding bit in the identifier of the message object cannot inhibit the match in the acceptance filtering. 1 = The corresponding identifier bit is used for acceptance filtering.

RW

0x1FFFFFFF