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AM6442: EFUSE region usage

Part Number: AM6442

SW: Linux SDK 08.00.00.004

I have a custom board with a AM6442 CPU in it.

I need to store a MAC address I allocate from my MAC Addresses prefix in the board in a non volatile, one time programmable memory.

TRM specifies that EFUSE0 region is: 0x000300000: 0x0003000FF.

Is this region for custom usage?

If not, is there another one time programmable memory for custom needs?

I saw in code that the MAC address is read from the following registers: CTRLMMR_MAC_ID0, CTRLMMR_MAC_ID1.

Which efuse address is mapped to these registers?

Is it possible to receive a CPU without TI's MAC address flashed in it?   (If not, I will just use another efuse address)

Thanks