Set Sleep Mode Via Uart; Set Sleep Mode Via Usb With Suspend/Resume And Remote Wakeup - Quectel LTE-A Series Hardware Design

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.
Module
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.
EG060V-EA_Hardware_Design
MAIN_RXD
MAIN_TXD
MAIN_RI
MAIN_DTR
GND
Figure 4: Set Sleep Mode via UART
LTE-A Module Series
EG060V-EA Hardware Design
Host
TXD
RXD
EINT
GPIO
GND
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