Service Guide

LTE Standard Module Series
⚫ The host’s USB bus, which is connected with the module’s USB interface, enters Suspend state.
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
GND
GND
Figure 3: Sleep Mode Application with USB Remote Wakeup
⚫ Sending data to the module through USB will wake up the module.
⚫ When the module has a URC to report, the module will send remote wakeup signals via USB bus to
wake up the host.
The AP_READY is active low and the default state is high.
NOTE