Datasheet

DCAN Control Registers

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Table 26-28. IF3 Observation Register (DCAN IF3OBS) Field Descriptions (continued)

Bit Field Value Description

9 IF3 SA IF3 Status of Arbitration data read access

0 All Arbitration data bytes are already read or are not marked to be read

1 Arbitration section still has data to read

8 IF3 SM IF3 Status of Mask data read access

0 All Mask data bytes are already read or are not marked to be read

1 Mask section still has data to read

7-5 Reserved 0 These bits are always read as 0. Writes have no effect

4 Data B Data B read observation

0 Data B section does not need to be read

1 Data B section has to be read to enable next IF3 update

3 Data A Data A read observation

0 Data A section does not need to be read

1 Data A section has to be read to enable next IF3 update

2 Ctrl Ctrl read observation

0 Ctrl section does not need to be read

1 Ctrl section has to be read to enable next IF3 update

1 Arb Arbitration data read observation

0 Arbitration data does not need to be read

1 Arbitration data has to be read to enable next IF3 update

0 Mask Mask data read observation

0 Mask data does not need to be read

1 Mask data has to be read to enable next IF3 update

1214

Controller Area Network (DCAN) Module SPNU562–May 2014

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