Community Translation: AURIX™ MCU: ロックステップ機能を有効にし、テストする – KBA234797
Version: **
Follow these steps to enable and test the lockstep function in AURIX™ MCU (for this KBA, TC265 is considered):
Precondition:
The Startup Software (SSW) performs the Lockstep configuration only upon cold power-on, as follows:
- If a valid Boot Mode Index (BMI) found during start-up mode evaluation
- Lockstep control for CPU1 is installed in LSEN bitfield of the control register (LCLCON1) from LCL1LSEN bitfield of the BMI register.
- Enable the lockstep function using the LSEN bitfield of the LCLCON1 register in the System Control Unit (SCU), SCU_LCLCON1.LSEN=enabled
- Inject a lockstep fault in the LCLT0/LCLT1 bitfield of the LCLTEST register, SCU_LCLTEST.U32 = 0x02.
Note: In TC265, only core 1 has checker core.
The core1 lockstep fault is injected and there is a Safety Management Unit (SMU) fault of group1 index0.
- Read out the related alarm (SMU_AG[1].SF0=1) immediately.
- Wait for 5 µs.
- Read out the alarm successfully. During step 4, SMU State Machine (SMU.SSM) changes from RUN to FAULT. SMU_AG[1] is saved as SMU_AD[1].
See the “System Control Unit (SCU)" and “Safety Management Unit (SMU)” sections of the User’s manual for more information.
Note:
This KBA applies to the following series of AURIX™ MCUs:
- AURIX™ TC2xx series
- AURIX™ TC3xx series
