Need to read the encoder signals with frequency 1.8MHz using timer input capture using STM32H743 Eval board.

[KS.4]

I have configured the TIM3 in input capture with following configuration

Prescale - 1

Period - 0xFFFF

Counter mode- Up

Division - 0

Repetation counter - 0

ISR reads the counts accurately if the encoder signal frequency is within 100KHz, but increasing the frequency would result in false counts.

Please provide solution and suggestion on this asap.

Regards

Kavya S