ST STM32F2 Series User Manual page 70

SM CODE
Ownership
Detailed implementation
Error reporting
Fault detection time
Addressed fault model
Dependency on MCU configuration
Initialization
Periodicity
Test for the diagnostic
Multiple faults protection
Recommendations and known limitations
UM1845 - Rev 4
SAI_SM_2
End user
This safety mechanism is implemented using the two SAI interfaces to decode/receive the same
input stream audio. The application software checks the coherence between the received data
Depends on implementation
Depends on implementation
Permanent and Transient
None
Depends on implementation
On demand
Not needed
CPU_SM_0: Periodical core self test software
The MCU performance overload and the implementation complexity associated to this method can
be relevant.
Method to be used when SAI interface safety-related use is "audio stream receive"
Description of hardware and software diagnostics
UM1845
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