Usb Application With Usb Remote Wakeup Function - Quectel EM05-G Hardware Design

Figure 3: DRX Run Time and Current Consumption in Sleep Mode

3.2.1.1. USB Application with USB Remote Wakeup Function

If the host supports USB suspend/resume and remote wakeup function, the following two conditions must
be met to make the module enter sleep mode.
⚫ Execute AT+QSCLK=1 to enable the sleep mode.
⚫ The host's USB bus, which is connected to the module's USB interface, enters suspend state.
The following figure shows the connection between the module and the host.
Figure 4: Sleep Mode Application with USB Remote Wakeup
The module and the host will wake up in the following conditions:
⚫ Sending data to EM05-G via USB will wake up the module.
When EM05-G has a URC to report, the module will send remote wake-up signals via USB bus to
⚫
wake up the host.
EM05-G_Hardware_Design
DRX OFF ON OFF ON
Module
USB_DP
USB_DM
GND
OFF ON OFF ON OFF
Host
USB_DP
USB_DM
GND
LTE Standard Module Series
EM05-G Hardware Design
Run Time
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