ST STM32L4 Series User Manual

SM CODE FSMC_SM_3
Error reporting Refer to functional documentation
Fault detection time ECC bits are checked during memory reading.
Addressed fault model Permanent/transient
Dependency on Device configuration FSMC interface is available only on selected part numbers.
Initialization None
Periodicity Continuous
Test for the diagnostic Not applicable
Multiple-fault protection FSMC_SM_2: Periodic read-back of FSMC configuration registers
Recommendations and known limitations
This method has negligible efficiency in detecting hardware random failures affecting the
FSMC interface. It can be part of End user safety concept because addressing memories
outside STM32L4 and STM32L4+ Series MCU.
3.6.17 Quad-SPI interface and Octo-SPI interface (QUADSPI/OCTOSPI)
Note: For this document's scope, Octo-SPI interface includes the OCTOSPIM.
Table 69. QSPI_SM_0
SM CODE QSPI_SM_0
Description Periodic read-back of OCTOSPI configuration registers
Ownership End user
Detailed implementation
This method must be applied to OCTOSPI configuration registers.
Detailed information on the implementation of this method can be found in
Section 3.6.14 Extended interrupt and events controller (EXTI).
Error reporting Refer to NVIC_SM_0
Fault detection time Refer to NVIC_SM_0
Addressed fault model Refer to NVIC_SM_0
Dependency on Device configuration Refer to NVIC_SM_0
Initialization Refer to NVIC_SM_0
Periodicity Refer to NVIC_SM_0
Test for the diagnostic Refer to NVIC_SM_0
Multiple-fault protection Refer to NVIC_SM_0
Recommendations and known limitations Refer to NVIC_SM_0
Table 70. QSPI_SM_1
SM CODE QSPI_SM_1
Description Protocol error signals including hardware CRC
Ownership ST
Detailed implementation
OCTOSPI communication module embeds protocol error checks (like overrun, underrun,
timeout etc.), conceived to detect communication-related abnormal conditions. These
mechanisms are able anyway to detect a percentage of hardware random failures affecting
the module itself.
Error reporting Error flag raise and optional interrupt event generation
Fault detection time
Depends on peripheral configuration (for example baud rate). Refer to functional
documentation.
UM2305
Hardware and software diagnostics
UM2305 - Rev 10
page 44/110

ST STM32L4 Series Specifications

General

Brand	ST
Model	STM32L4 Series
Category	Microcontrollers
Language	English