S32K1xx FTM internal loopback

[AdrianR]

The S32K1xxSM_Rev6.pdf depicts at page 72 an internal signal path from FTM out (eg. PWM) to FTM in.

Could the author explain how this is practically achieved? I could not find this path in the reference manual.

[naveenm]

Hi Mattia,

This will be available in SM version 7.1. It was a mistake in SM version 7.0 which is being corrected.

Please allow couple of days before SM version 7.1 is uploaded.

Regards,

NaveenM

[mattiasecchiaro]

Hello NaveenM,

thanks for the info.

In actual revision of SM ("S32K1XXSM_Rev7.pdf"), the procedure "Single Write PWM Output with external read-back" has been removed from par. 5.7.2.2.1.1.

Why?

Since the internal read back is impossible, we need an alternative to check a PWM output.

Regards,

Mattia.

[naveenm]

Hi Adrian, Mattia

Thanks for pointing out. This is a known issue with S32K1xx Safety Manual and actions are being initiated to address it.

In fact the internal read-back path DOES NOT exists in FTM. With the next release of SM (due in couple of days), it will be corrected.

Hope it helps.

Regards,

NaveenM

[mattiasecchiaro]

Hello,

we have the same issue:

• how is the internal signal path achieved?
• how is the "Single Write PWM Output with internal read-back" of pag.71 practically implemented?

We are using the P/N FS32K148UJT0VMHR.

Thanks,

Mattia.