I notice that some of the Synergy Kits have an IRQ associated with the Ethernet PHY. Do I need this on my Ethernet designs?
This IRQ is an optional pin associated with the Wake-on-LAN feature supported on some PHY devices. This feature allows the PHY to wake the MCU when traffic on the line indicates a wake might be needed. The signal is included on the Synergy Kits in case the user wants to add this feature on their designs. It is an optional signal not needed in the current Synergy Ethernet modules.