Appendix A Summary Of Recommended Safety Feature Usage; Summary Of Safety Features And Recommendations - Texas Instruments C2000 User Manual

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Appendix A Summary of Recommended Safety Feature Usage

Table 6 provides a summary of the safety concept recommendations for C2000 MCU. Each
recommendation is given a unique identifier to aid in requirements management. This is a generic table
applicable per MCU module or peripheral. These modules may not be available on all the MCUs. For its
availability in the selected MCU, see the device-specific data sheet. For each safety feature or diagnostic,
the recommendation is noted in simplified form as follows:
Notation Category
M Mandatory
Highly
++
Recommended
+ Recommended
o Optional
Table 6. Summary of Safety Features and Recommendations
Partition
Module
Device Partition
C2000 MCU On-Chip
Feature
Processor
28x CPU C28x_CPU
FPU C28x_FPU
VCU C28x_VCU
CLA C28x_CLA
Memory
RAM C28x_RAM
Flash C28x_NVME Periodic CRC, read operation
OTP C28x_OTP
ROM C28x_BROM Periodic CRC, read operation
Interrupts and DMA
PIE C28x_PIE
DMA C28x_DMA
System Control
Clock registers, C28x_CLK
protected ranges
Watch DOG C28x_WD
32-Bit Timer C28x_TIMx
SPRUHI3A – April 2013 – Revised August 2013
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Table 5. Legend
TI Recommendation
Safety feature always operational
Provides high value diagnostics
means
Provides high value diagnostics
means
Provides low value diagnostics
Device
Level Safety Features or Diagnostic
Register check for CPU registers
Register check for CPU registers
Register check for CPU registers
Register check for CPU registers
Periodic CRC, read and write
operation, March13
M
Periodic CRC, read operation
Check PIE registers and RAM
Interrupt Sweep test
DMA Registers and CRC check on
data transfers
Check for register and memory
range that are protected
Check registers and timing check
Timer Timing check
Copyright © 2013, Texas Instruments Incorporated
that are difficult to implement by other
that may be implemented by other
that may be implemented by other means
Feature
Recommendation
Boot
Time
++
++
++
++
++
Summary of Recommended Safety Feature Usage
User Choice On Safety
Features
Cannot be disabled
Can be enabled or disabled
Can be enabled or disabled
Can be enabled or disabled
Periodic Possible Diagnostic Measures
++ Self test using PSA hardware on
critical code segments,
autocoverage
++ Self test, autocoverage
++ Self test, autocoverage
++ Self test, autocoverage
++ Self test with PSA, CRC and
March13 Autocoverage/
++ Self test with PSA,CRC
autocoverage
++ Self test with PSA,CRC
autocoverage
Self test with PSA,CRC
autocoverage
++ RAM tests, autocoverage
++ Software CRC on data
transferred
+ Software response on register
configuration and error check
++ Internal watchdog interrupt and
Software response
++ Timing check with SFO or other
clock references
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