Quectel LTE-A Series

LTE-A Module Series
EG060V-EA Hardware Design
EG060V-EA_Hardware_Design 28 / 82
3.5.1.1. Set Sleep Mode via UART
If the host communicates with the module via UART interface, the following steps are required to set the
module into sleep mode.
⚫ Execute AT+QSCLK=1 command to enable sleep mode.
⚫ Drive MAIN_DTR HIGH.
The following figure shows the connection between module and host in this case.
MAIN_RXD
MAIN_TXD
MAIN_RI
MAIN_DTR
TXD
RXD
EINT
GPIO
Module
Host
GND GND
Figure 4: Set Sleep Mode via UART
The module and the host will be waken up in the following conditions:
⚫ Driving the host DTR LOW will wake up the module.
⚫ When the module has a URC to report, an RI signal will wake up the host. Please refer to Chapter
3.16 for details about RI behavior.
3.5.1.2. Set Sleep Mode via USB with Suspend/Resume and Remote Wakeup
If the host supports USB suspend/resume and remote wakeup functions, the following steps are required
to set the module into sleep mode.
⚫ Execute AT+QSCLK=1 command to enable sleep mode.
⚫ Ensure the MAIN_DTR is held at high level or keep it open.
⚫ Ensure the host’s USB bus, which connects to the module’s USB interface, is in suspend mode.