MPC5777C - Performance Monitors outside the core

[MatheusFranklin]

Hello!

I know that the e200z7 core has a PMU (Performance Monitoring Unit) which can count hardware events. However, I would like to know if the MPC5777C has more performance monitors outside the core that can count events like misses in the PFLASH mini-cache, for example.

Best regards,

Matheus.

[davidtosenovjan]

I have been dealing with Performance monitor in the following thread, pay attention to links at the bottom:
https://community.nxp.com/t5/MPC5xxx/cant-write-in-MPC5744P-performance-monitor-registers/td-p/14962...

However performance monitor is a feature of e200 core. The most external event are BIU (bus interface unit) related.

[MatheusFranklin]

Thank you for the reply, David!

So every monitor that can count hardware events are listed in the Performance Monitor chapter of the e200z7 core RM?
Does not the peripherals have performance monitors themselves?
Does not the Nexus debug module have performance monitoring features?

Best regards,
Matheus

[davidtosenovjan · Accepted solution]

So every monitor that can count hardware events are listed in the Performance Monitor chapter of the e200z7 core RM?
- Basically yes, you are right.
Does not the peripherals have performance monitors themselves?
- No, they don't have.
Does not the Nexus debug module have performance monitoring features?
- Nexus may have TRACE feature, offering lot of capabilities that are however rather feature of the tools itself. You may see for instance following:
https://www.nxp.com/docs/en/application-note/AN4591.pdf