DP83640: DP83640 Cannot Establish Ethernet Link – Request for Schematic Review and Example Firmware

Part Number: DP83640
Other Parts Discussed in Thread: TMDS570LS31HDK

Hello everyone,

I am using the DP83640 as the Ethernet PHY on a custom board, but it is currently unable to establish a network connection. I would like to ask for suggestions from the community or TI engineers.

System Information

• DP83640

• TMS5703137DPGEQQ1

Questions

1. Are there recommended basic bring-up and debugging steps for the DP83640?

2. Are there common hardware design pitfalls that are easy to overlook?

3. Could someone help review my schematic and point out any potential issues?

4. Is there official example firmware or driver code available for reference?

    

   
   

    

Schematic PDF of the current board layout is attached for reference.

PCB_SCH.pdf 

Thank you for any guidance!