DP83825I: STM32H573 + DP83825 not working

Part Number: DP83825I


Hello,

 

I've seen the same post on the TI forum. Is there a solution for this problem?

I have the same setup: STM32H573 + DP83825.

 

I have confirmed all straps are correct (by reading 0x467 and 0x468).

25MHz is present on XI.

50MHz clock is output by DP83825 on 50MHzOut/LED2.

 

The PHY establishes the link. The Link LED goes on and blinks when receiving packets.

Interrupts work, the firmware is notified.

Howerver, STM32 is not receiving anything. I checked the RXD0, RXD1 lines: all seems good, there are transitions when receiving packets. RX_CRS_DV does go high while receiving and then drops low.

Still, nothing is coming in the STM32 MCU.

Could you please help?

Regards,

Raz

  • Hi Raz, 

    Is 50MHz clock connected to the MAC? It sounds like the MAC could be dropping the packets. Is there a way to check if the MAC is receiving packets on the receiver like ethtool on Linux?

    Best,
    J