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VRC_CTRL Clarification

Hello NXP Support,


I would like to ask some questions on S32K3's VRC_CTRL (PTE13).

(1) RM mentions VRC_CTRL is direct signal, could you please check the understanding/question in the following table (red font)?

image.png

ALTx

OBE

IBE

VRC_CTRL

Question

GPIO

Disabled

Disabled

Enabled

VRC_CTRL will take effect, right?

GPIO

Disabled

Enabled

Enabled

VRC_CTRL will still take effect, right?

GPIO

Enabled

Not Care

Enabled

Who will take effect?


(2) If we configure PTE13 as GPIO + OBE Enabled + Output Level Low, will the VRC_CTRL negative feedback mechanism be broken because VRC_CTRL is treated as error signal and now maybe GPIO and VRC_CTRL are driving the pin at the same time?

(3) In NXP MCAL, as long as I configure PTE13 as PG_VRC_CTRL_OUT, OBE will be automatically set by function Port_Ipw_SetOnlyOutputMode(), is it an issue of MCAL?

(4) How to test VRC_CTRL feedback mechanism , what waveform is expected during which condition?

(5) Why is MSCR141 documented as "Not Supported" in RM?

image.png

Thanks.

BR


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