OSDA D14 LED goes RED

SanthoshP — Mon, 20 Oct 2025 12:17:07 GMT

Dear NXP Support Team,

I have configured two LPSPI for my SPI data transfer protocol code using S32 design studio.

But during my configuration I have disturbed the pre-configured FS23 SPI which is PTC9 and PTB1 in S32k11 nxp controller. While testing this Software I have encountered a different problem like OSDA D14 pin goes RED it is confirmed that the output from the PMIC is 0V.

Now my question is this RED LED is due to my configuration or any other possibilities to go RED. I need clarification on this.

also need list of which the OSDA D14 can go RED

Thanks,

Santhosh P

Re: OSDA D14 LED goes RED

Robin_Shen — Tue, 21 Oct 2025 07:42:25 GMT

If you don't pull FS23_CSB/SDA PTB0 low, the FS23 shouldn't be misconfigured via SPI commands.
If possible, please take a photo of the S32K31XEVB-Q100 so I can clearly see the jumper settings and which LEDs are lit.
Regarding the 0V output from the PMIC, are you referring to FS23_HBUCK_V1 (FS23_V1), FS23_LVDO_V2 (FS23_V2), or FS23_LVDO_V3 (FS23_V3)?
If I disconnect J26, does the voltage output of FS23_HBUCK_V1 or FS23_LVDO_V2 return to normal? If this is the case, there may be a short circuit on the board, and the FS23 should be heating up.

If SDA_RST_TGTMCU is low, D14 will light up red, which means that RESET_MCU is low and the S32K311 is in reset state. If J1 connects RESET_MCU and FS23_RSTB, you need to disconnect J1 to check whether the low level comes from FS23's RSTB.

Best Regards,
Robin
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topic OSDA D14 LED goes RED in S32K

OSDA D14 LED goes RED

Re: OSDA D14 LED goes RED