Usb Application With Usb Suspend/Resume And Wowwan# Functions; Airplane Mode - Quectel EM05-G Hardware Design

3.2.1.2. USB Application with USB Suspend/Resume and WOWWAN# Functions

If the host supports USB suspend/resume but does not support remote wake-up function, the
WOWWAN# signal is used to wake up the host.
There are two preconditions to let the module enter sleep mode.
⚫ Execute AT+QSCLK=1 to enable sleep mode.
⚫ The host's USB bus, which is connected with the module's USB interface, enters suspend state.
The following figure shows the connection between the module and the host.
⚫ Sending data to EM05-G via USB will wake up the module.
⚫ When EM05-G has a URC to report, WOWWAN# signal will wake up the host.

3.2.2. Airplane Mode

When the module enters airplane mode, RF function does not work, and all AT commands correlative with
RF function will be inaccessible. This mode can be set via the following ways.
Hardware:
The W_DISABLE1# pin is pulled up by default; driving it to low level will let the module enter airplane
mode.
Software:
AT+CFUN provides the following choices of the functionality level.
⚫ AT+CFUN=0: Minimum functionality mode; both (U)SIM and RF functions are disabled.
⚫ AT+CFUN=1: Full functionality mode (by default).
⚫ AT+CFUN=4: Airplane mode. RF function is disabled.
EM05-G_Hardware_Design
Module
USB_DP
USB_DM
WOWWAN#
GND
Figure 5: Sleep Mode Application with WOWWAN#
LTE Standard Module Series
EM05-G Hardware Design
Host
USB_DP
USB_DM
EINT
GND
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