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DP83867IR: WoL without register access - boot from LAN

Part Number: DP83867IR

Tool/software:

The System should be waken by WoL of the PHY DP83867IR. Therefore, I intend to use the INT/PWDN pin as interrupt to wake the system. The PHY is driven by standby supplies.

The INT/PWDN-pin is cnfigured as PWRDOWN by default. Is there a way to configure the INT/PWDN-pin to WoL-Interrupt without register access? Since the system should not only be  waken but also booten over LAN, a pre configuration over register access seems not to be a solution to us. Is there a boot strap option I have not found, or is the configuration made on registers non-volatile?

Thanks in advance,

Tom