S32K344 with DP83848YB/NOPB using lwip_s32k344 demo

[wangjunxiao]

Hello, when using the lwip_s32k344 demo to test Ethernet communication, I found that I can successfully ping the Ethernet chip during debugging. However, when I power off the mainboard and power it on again without debugging, I cannot ping it. I need to reset the MCU after powering it on to be able to ping it again. I am using RTD2.0.1. Could you please advise on how to solve this issue?

[PetrS]

Hi,

could you please specify the board you have?

BR, Petr

[wangjunxiao]

Thanks for your response.We have designed our own mainboard, referencing the design documents and hardware manuals from the official website.Is this related to hardware design? What could be causing this issue?

[PetrS]

Hi,

maybe it has something with pinstrapping option of the PHY, which is usually captured at reset event.

BR, Petr