Power ManagementのトピックRe: #Cannot control fs26 pmic gpio1,2 with using s32k396 evaluation board

#Cannot control fs26 pmic gpio1,2 with using s32k396 evaluation board

Mooang — Mon, 18 Aug 2025 08:39:58 GMT

Hi, I'm currently using fs26 pmic with s32k396 evaluation board.

U know, fs26 use spi communication to control several state or pins like gpio, trk1,2 etc

I want to activate gpio 1 pin so I send register command
"Sbc_fs26_WriteRegister(FALSE, 0x11, 0x0318);" - I am using s32ds real time driver.
(I activated gpio1, gpio2, trk1, trk2)

And I read M_STATUS register which can know about fs26 pin state.
But gpio 1 pin doesnt activated.

Also, I deactivated "Sbc_fs26_WriteRegister(FALSE, 0x12, 0x0318);" - deactivate all pin
But gpio2 pin doesnt deactivated.

So, What I wonder is can't we change gpio1,gpio2 state using spi communication?

According to the datasheet, the VCORE_PGOOD signal is associated with GPIO2.
Is this configuration set as a default when the PMIC device is initially manufactured?

Can't we change status unless using otp configuration?(There are no register address changing state in s32ds fs26 example code [except gpio high , low] like gpio pull down pull up ) .

thanks. best regards

Re: #Cannot control fs26 pmic gpio1,2 with using s32k396 evaluation board

JozefKozon — Mon, 18 Aug 2025 09:50:05 GMT

Dear Hyun,

please share the full Evaluation Board product number or a link to the evaluation board, so I can check which FS26 version you have on the board you are using. The OTP registers cannot be changed once burned. You can only test the OTP registers settings if you set the FS26 to OTP mode.

With Best Regards,

Jozef

Re: #Cannot control fs26 pmic gpio1,2 with using s32k396 evaluation board

Mooang — Mon, 18 Aug 2025 09:59:07 GMT

I'm using s32k396-bga-dc1 evaluation board.
Is it possible to do otp setting with s32 design studio?
I can't see any otp register address in below example code

is there any software to use otp setting?

Re: #Cannot control fs26 pmic gpio1,2 with using s32k396 evaluation board

JozefKozon — Mon, 18 Aug 2025 10:32:55 GMT

Dear Hyun,

thank you for the product number. According to the schematic, there is FS2633AMDE4AD populated.

According to the FS2633AMDE4AD OTP configuration report attached, the GPIO pins are set as inputs.

Please check additional software for the S32K396 MCU.

https://www.nxp.com/app-autopackagemgr/automotive-software-package-manager:AUTO-SW-PACKAGE-MANAGER?currentTab=0&selectedDevices=S32K396

For enabling the FS26 in OTP mode, please refer to the section 21 in the Full FS26 datasheet. Please download the FS26 product page, under the Secure section.

Please note, you need to have a valid NDA (Non Disclosure Agreement) with NXP to be able to download the FS26 datasheet and other confidential documents.

If you haven't the NDA yet and you would like to sign one, please create a new ticket here and an NXP representative for NDA matters will take you through the process.

With Best Regards,

Jozef

Re: #Cannot control fs26 pmic gpio1,2 with using s32k396 evaluation board

Mooang — Tue, 19 Aug 2025 00:43:40 GMT

Thanks for taking the time to review my question. best regards.
God bless you.

Re: #Cannot control fs26 pmic gpio1,2 with using s32k396 evaluation board

JozefKozon — Tue, 19 Aug 2025 05:06:52 GMT

Dear Hyun,

you welcome. Have a nice day.

With Best Regards,

Jozef