MAC Address Assignment

TCP/IP Chip W5500
1
  1. W5500 doesn’t come up with embedded MAC address. So what it the procedure to get MAC address for the chip that I purchase.
  2. Is there any support from Wiznet wrt getting MAC address for the chips that we will be purchasing?

Thanks,
Ronak Bhalani

2

Most probably because W5500 is a chip, and not complete network interface card.

If you need unique identifier so that no one another network card in the world is having the same MAC address you go here: https://regauth.standards.ieee.org/standards-ra-web/pub/view.html#registries. But you can assign any MAC address to your card given that there’s no another card with the same MAC address in the local network.

3

ronakbhalani,

Alternatively, one could add an EEPROM chip like Microchip’s 25AA02E48 to your design. This would provide a globally unique mac address to your uC. Just tack it on to your SPI bus, and you’re done. Bonus EEPROM too.

-Chris

4

Thanks.

We are using Microchip’s RTC which also provides factory programmed MAC address.