W6100 read/write MAC

[sergyv]

Hello!

When on startup I try to write MAC address I use the following SPI command:

41 20 04 01 02 03 04 05 06

And I get response:
01 02 03 00 00 00 00 00 00

But then I try to read it with:
41 20 00 00 00 00 00 00 00
And get the reply:
01 02 03 00 00 00 00 00 00

My SPI comms work as I get 01 02 03 at the start. But why the register is empty?

[louis]

Hello

There’s no address inside the chip.
You have to buy it separately and add address.

Thank you