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TMS570LC4357: MSP16: 1-bit and 2-Bit Error on SPI ECC-Error test when injecting 1-bit error

Max Wittekind
Expert 1885 points

Part Number: TMS570LC4357

Hi experts,

When injecting a 1-Bit error into the ECC of the SPI-Modul (Diagnostic MSP16 mentioned in the Safety Manual) we consistently get an ESM 1.17 and ESM 1.77 error.
We are expecting just ESM 1.77.

When injecting a 2-bit error we just get ESM 1.17 as expected.
This behaviour seems to be similiar the behaviour of the VIM and DMA ECC Test that we noticed and discussed here:

https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1123115/tms570lc4357-dma12-1bit-ecc-test-triggers-ems-1-82-and-1-3?tisearch=e2e-sitesearch&keymatch=TMS570LC4357%25252520dam%25252520ecc#

https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1123117/tms570lc4357-vim-ecc-test-triggers-esm-1-83-and-1-15-when-injecting-single-bit-error?tisearch=e2e-sitesearch&keymatch=TMS570LC4357%20VIM%20ecc#

(Q1) Can you confirm, that a ESM 1.17 and 1.77 is to be expected when injecting a 1-bit error into SPI ECC?

Thank you and best regards,
Max