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DCAN Control Registers

26.17.28 IF3 Mask Register (DCAN IF3MSK)

Figure 26-69. IF3 Mask Register (DCAN IF3MSK) [offset = 144h]

31 30 29 28 16

MXtd MDir Rsvd Msk[28:16]

R-1 R-1 R-1 R-1FFFh

15 0

Msk[15:0]

R-FFFFh

LEGEND: R = Read; -n = value after reset

Table 26-29. IF3 Mask Register (DCAN IF3MSK) Field Descriptions

Bit Field Value Description

31 MXtd Mask Extended Identifier

0 The extended identifier bit (IDE) has no effect on acceptance filtering.

1 The extended identifier bit (IDE) is used for acceptance filtering

Note: 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.

30 MDir Mask Message Direction

0 The message direction bit (Dir) has no effect on acceptance filtering.

1 The message direction bit (Dir) is used for acceptance filtering.

29 Reserved 0 These bits are always read as 0. Writes have no effect.

28-0 Msk[n] 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.

1215

SPNU562–May 2014 Controller Area Network (DCAN) Module

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