MCX Microcontrollersのトピックi.MX 6UltraLite MAC address

i.MX 6UltraLite MAC address

AndreaB-17 — Tue, 23 Apr 2024 07:19:54 GMT

Hi,

I have a board with i.MX 6UltraLite (MCIMX6G2CVM05AB) and a LAN connection by the PHY transceiver KSZ8081RNBIA-TR of Microchip.

I see the MAC address changes every time a reset the board. So I need some explanation:

- Is the i.MX 6UltraLite who generates the MAC address?

- Is there a way to have a univoque value for the MAC address?

Best regards,

Andrea

Manuel_Salas — Tue, 23 Apr 2024 18:13:17 GMT

If you want an unique MAC address you can burn the fuses:

21B_C620 -> Value of OTP Bank4 Word2 (MAC Address) (OCOTP_MAC0)

21B_C630 -> Value of OTP Bank4 Word3 (MAC Address) (OCOTP_MAC1)

You can do it in U-boot with fuse prog.

Best regards.

Salas.