To wake-up the PHY locally (local wake), a pulse of width greater than 40 μs is required to be forced on the WAKE pin. The detection circuit inside the PHY on the WAKE pin rejects any pulse of width less than 10 μs and detects any pulse greater than 40 μs reliably. The core power supplies (VDDA, VDDIO/VDDMAC) are not needed for the PHY for local wake detection.

After the wake-up, PHY transitions from sleep to wake-up mode and pulls INH to high.

For local wake, it is assumed that some portion of the system is already active and the PHY is in TC10 sleep. As an example, the system might have a microcontroller in active mode to control the WAKE pin of the PHY. When the MCU wants to wake up the PHY from TC10 sleep, it raises the WAKE pin to 3.3 V to send a wake pulse.