Infineon Technologies TC1728 User Manual page 1072

• BE stands for Bus Error, NSC stands for No Special Condition
Note: Configuration registers that determine the behavior of the BMU are protected by
the end of init protection mechanism. They are intended to be only configured
once during the initial system startup phase. In safety-related applications the
configuration is controlled by the Safety Driver. Registers that need to be updated
by the application (run-time interaction) are only protected by supervisor mode:
applies to FMSTS.
Register access constraints
The registers that control the operation of the BMU are assumed to be static, they are
configured by the safety driver according to the requirements of the safety application(s)
during the initial microcontroller configuration. Exceptions will be documented in each
register sub-chapter. As indication the list of registers that are assumed to be static are:
• PSET0, PSET1,
• CTL is only allowed to be change if SIST mode is used during run-time for ECC
checks. The necessity to do ECC checks during run-time will depend on the safety
monitoring concept.
1) Currently TID is a read-only register, this may change in future enhancements of the BMU.
User's Manual
BMU, V2.6
1)
TID , FMCTL, FMTH
15-28
TC1728
Bus Monitor Unit (BMU)
V1.0, 2011-12