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==== eFuse bank registers ====
ETRA family uses the Bank0 Word0Word 57, Word1 Word 58 for storing the MAC addresse. The MAC values should be properly divided into the two registers for correct programming.
The related 57, 58, OTP registers will be used for the purposes illustrated in this AN.
==== eth0 eFuse programming ====
U-Boot uses the <code>fuse prog</code> command for writing the MAC address into the eFuse. The MAC address should be divided in high 16 bit and low 32 bitstwo parts, for example MAC address <code>AB:CD:12:34:56:78</code> for eth0 is then divided into :
<pre class="workstation-terminal">
