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TMS570LC4357-EP: PMU counter issue in Simulink PIL setup

Part Number: TMS570LC4357-EP
Other Parts Discussed in Thread: TMS570LC4357

Hi 

we are setting up PIL Simulink environment using TMS570lc4357  Eval board and it is working fine. However we would like to take task profiling and the timer setup uses PMU for task profiling in Simulink PIL environment. After completing the execution the profiling information always reads as zero.  If  we change the setup from PMU to RTI, it is working fine, we are able to get task profiling information. One of the TI thread we found that PMU is more accurate than RTI, hence we would like to use PMU instead of RTI for our task profiling. Please note that RTI clock is 75 MHz and PMU is 150 MHz which is HCLK clock. also one more clarification is to change clock source for PMU other than HCLK?