S32G3 Virgin Device Bring Up (Custom Board)

[vrathiraj]

Hi, we currently received our PCBs using the S32G3 Processor. The design references the Evaluation board in many ways. One thing we have been trying to do is get the eMMC algorithm loaded via UART0 connection

When I power up the board, the BOOTMOD pins are set low to configure it to boot from Serial when its powered the current draw is about 60mA. When I test the COM port connection using the S32 Flash tool (Test connection button) it returns back board is connected.

Then when I try to do the upload target and hardware algorithm it prepares everything and as soon as it says configuring target, it will state target configured and it will then say establishing connection with target at this time the current draw of the board drops down to 50mA and then eventually says cant establish connection with target

When i click the test connection button again, it will say that it cant establish connection with target

If i click the reset button on our board (button connected to reset pin of the S32G3) the current draw will go back to 60mA and when i click test connection it will say board connected

Is there something that I am missing from the procedure to flash a virgin device? as the flash tool can see the device but as soon as it configures the target it gets into a different state?

Is there other steps that we should be following when trying to program a virgin device? What we would like to do is flash the binaries/image from the EVB dev kit to our board just do a quick initial boot up test any guidance on this would be greatly appreciated

[alejandro_e]

Hello @vrathiraj,

Thanks for reaching out to us. Regarding your issue, other than the current being noticeably low, are you getting any error in the S32 Flash Tool when trying to load the eMMC algorithm?

Other than the problems with the algorithm loading, have you seen any other unexpected behavior? for example when debugging.

Another approach we can take to this problem is to start a schematic review, this process takes some weeks  but it will show us any problem with the S32G3 connections in your board, if any. For that I require the complete schematics of your board in searchable PDF format. if you want to take this approach you can share your schematics via the private message functionality of the community or you can create a private support ticket:

Screenshot 2026-03-17 125323.png

If you create a private ticket you can include the link for this post for better tracking.

Thanks

[vrathiraj]

Thanks for the reply, I was able to figure out what the issue was, we had to place BOOTMOD[1] high and BOOTMOD[0] low (both were originally low) once I did that I was able to flash the eMMC algorithm to SRAM successfully

Thanks for the prompt response, will reach out if any more questions do come  

[alejandro_e]

Hello @vrathiraj,

Thanks for letting me know you were able to solve your issue. It is definitely unexpected to BOOTMOD as 10 instead of 00, given that 00 is the serial boot which is the one used to load the algorithm.  I Nonetheless, I am glad to know you were able to overcome the problem.

As you know, if you encounter any other problem in the future please create a new post for that topic.

Regards,

Alejandro