Service Guide
Table Of Contents
- Safety Information
- About the Document
- Contents
- Table Index
- Figure Index
- 1 Introduction
- 2 Product Overview
- 3 Operating Characteristics
- 4 Application Interfaces
- 5 Antenna Interfaces
- 6 Reliability, Radio, and Electrical Characteristics
- 7 Mechanical Information
- 8 Storage, Manufacturing, and Packaging
- 9 Appendix References
LTE Standard Module Series
EG915U_Series_Hardware_Design 31 / 90
USB_VBUS
USB_DP
USB_DM
AP_READY
VDD
USB_DP
USB_DM
GPIO
Module Host
MAIN_RI
EINT
Power
Switch
GPIO
GND
GND
Figure 6: Sleep Mode Application without Suspend Function
You can wake up the module by turning on the power switch to supply power to USB_VBUS.
3.3. Airplane Mode
When the module enters airplane mode, the RF function will be disabled and all AT commands related to
it will be inaccessible. This mode can be set via the following ways.
3.3.1. Hardware
The W_DISABLE# pin is pulled up by default. Its control function for airplane mode, which is disabled by
default, can be enabled through AT+QCFG="airplanecontrol",1. When such a control function is
enabled, you can drive it to low level to make the module enter airplane mode.
1. Please pay attention to the level match shown in dotted line between the module and the host.
2. When using AP_READY, MAIN_DTR, and MAIN_RI (pins 19, 30, and 39), please note that these
pins will have a period of variable level state (not controllable by software) after the module is
powered on: first high level (3 V) for 2 s and then low level (0 V) for 1.2 s, before they can be
configured as 1.8 V input or output. Please evaluate whether the unstable output state on power-up
meets your application design requirements based on the specific usage scenario and circuit
design.
NOTE