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LTE Module Series
EG95 Hardware Design
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Sending data to EG95 through USB will wake up the module.
When EG95 has a URC to report, RI signal will wake up the host.
3.5.1.4. USB Application without USB Suspend Function
If the host does not support USB suspend function, USB_VBUS should be disconnected with an external
control circuit to let the module enter into sleep mode.
control circuit to let the module enter into sleep mode.
Execute AT+QSCLK=1 command to enable the sleep mode.
Ensure the DTR is held at high level or keep it open.
Disconnect USB_VBUS.
The following figure shows the connection between the module and the host.
USB_VBUS
USB_DP
USB_DM
AP_READY
VDD
USB_DP
USB_DM
GPIO
Module
Host
RI
EINT
Power
Switch
GPIO
GND
GND
Figure 6: Sleep Mode Application without Suspend Function
Switching on the power switch to supply power to USB_VBUS will wake up the module.
Please pay attention to the level match shown in dotted line between the module and the host. Refer to
document [1] for more details about EG95 power management application.
document [1] for more details about EG95 power management application.
3.5.2.
Airplane Mode
When the module enters into airplane mode, the 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:
correlative with RF function will be inaccessible. This mode can be set via the following ways.
Hardware:
The W_DISABLE# pin is pulled up by default. Driving it to low level will let the module enter into airplane
mode.
mode.
NOTE