S32K pin in FTM disabled mode

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S32K pin in FTM disabled mode

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Contributor II

Hi all

My question is about FTM module.

I'm looking to know the behavior of S32 FTM pin, if the mux is configured as FTM mode (PORT_PCR_MUX), but the FTM is disabled by (ELSB:ELSBA) in CnSC register.

There is a comment from RM in Table 45-5. Channel Modes Selection, in case of ELSB:ELSA = 00:

"Pin not used for FTM—revert the channel pin to general purpose I/O or other peripheral control"

If the mux of the pin is still configured as FTM mode, what is the behavior ?

Do you have further explanation for this comment?

What is the logic state of the pin in this case? (output Low or high?, input or hi-Z )

Regards

Youssef

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1 Reply

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NXP TechSupport
NXP TechSupport

Hi Youssef,

The corresponding digital input buffer (GPIO_PDIR) is active in all digital functions.

If you don't drive the pin externally and the internal pull devices are disabled (PCRn_PE = 0), the pin is floating.

Regards,

Daniel