Hi,
Could you please let me know the maximum pulse frequency supported by TPM EXTCLK (tpm6.EXTCLK) pins in imx93 processor?
Regards,
Anushree
The TPM6 EXTCLK limit on i.MX93 is not given as a standalone pad maximum; it is specified relative to the TPM counter clock: the external clock source must be less than half of the TPM counter clock frequency because the input is synchronized before use.
For tpm6_clk_root , the i.MX93 clock root table lists a maximum frequency of 83.33 MHz . So, if TPM6 is clocked at that maximum rate, the practical upper limit for tpm6.EXTCLK pulses is:
The TPM control register confirms that TPM6 can count on the rising edge of EXTCLK , or on both edges, with the signal synchronized to the TPM counter clock. Also note that the TPM prescaler is still used when EXTCLK is selected.
Use <41.7 MHz only when the TPM6 counter clock is at its 83.33 MHz maximum; otherwise use EXTCLK < TPM counter clock / 2 .