Product Info

LTE Standard Module Series
EG95 Hardware Design
EG95_Hardware_Design 31 / 93
USB_VBUS
USB_DP
USB_DM
AP_READY
VDD
USB_DP
USB_DM
GPIO
Module Host
GND
GND
RI
EINT
Figure 5: Sleep Mode Application with RI
⚫ Sending data to EG95 through USB will wake up the module.
⚫ When module 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 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.