TMS570LS0432: TMS570LS0432

Hi Zakir,

Zakir Husen Seikh said:

Why lockstep implementation is important in automotive? 

Using the controller TMS570LS0432 we can build our system up to the ASIL D, which is the highest safety integration level in automative. To achieve this ASIL D, it is mandatory to have a checker CPU along with application CPU.

Both the CPU will operate in lockstep mode, that means we cannot separate them and both cores will execute the same code. And there will be a peripheral called CCM (Core Compare Module) which will compare the output signals and if it found any difference then it will generate an error.

For more details refer below thread:

(+) TMS570LC4357-EP: TMS570LC4357-EP - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

Zakir Husen Seikh said:

What is single core lockstep?

As far as i know, there won't be any concept called single core lockstep. Lockstep will only be applicable for dual cores only.

Zakir Husen Seikh said:

What is fail-safe operation and advantage of fail-safe over watchdog.

Watchdog may be helpful in certain situations, but watchdog can only be helpful to build a failsafe system right. There are so many other important concepts should need to build a failsafe system. One will be lockstep feature; this will allow us to find out the failures in the core.

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Thanks & regards,
Jagadish.