User's Manual

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1.4.7 WoWWAN
The WAKE_ON_WWAN# signal is for power saving.
•LTE module always listening at very low power in idle mode
•LTE module will wake up mother board via ‘WoWWAN’ signal.
•The platform will power on when triggered by the LTE module.
The WAKE_ON_WWAN# signal is used to wake up the host. It is open drain and should be
pulled up at the host side. When the WWAN needs to wake up the host, it will output a one
second low pulse, shown in Figure 1-4-6.
Typical Connection in Platform/System