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FlexRay Module Registers

Table 26-151. Message Handler Constraint Flags (MHDF) Field Descriptions (continued)

Bit Field Value Description

1 SNUB Status not updated channel B. This flag is set by the communication controller when the Message

Handler, due to overload condition, was not able to update a message buffer's status MBS with respect

to channel B.

0 No overload condition occurred when updating MBS for channel B

1 MBS for channel B not updated

0 SNUA Status not updated channel A. This flag is set by the communication controller when the Message

Handler, due to overload condition, was not able to update a message buffer's status MBS with respect

to channel A.

0 No overload condition occurred when updating MBS for channel A

1 MBS for channel A not updated

NOTE: When one of the flags SNUA, SNUB, FNFA, FNFB, TBFA, TBFB, WAHP changes from 0 to

1, interrupt flag MHF in the Error Interrupt register (EIR) is set to 1.

1337

SPNU563–May 2014 FlexRay Module

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