5.11.2 LOCAL WAKE-UP VIA WAKE PIN

The ATA6847 provides a high-voltage input pin (WAKE) with the purpose of waking up the device.

The local wake up is active after enabling it via the LOCWUE bit.

A local wake-up request is detected when a falling edge has been detected on the WAKE pin and the logic level on the pin has been stable for at least t_{local_wu}. The event will be signaled via the NIRQ pin in all Device Operation Modes (DOPM).

In Deep Sleep mode the local wake up is always active, independent of the LOCWUE bit value, as all SPI registers are cleared upon entering Deep Sleep mode. However, Deep Sleep mode cannot be entered without LOCWUE = '1'.