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 Electrical Characteristics & Reliability
- 7 Mechanical Information
- 8 Storage, Manufacturing & Packaging
- 9 Appendix References
LTE Standard Module Series
EG915U_Series_Hardware_Design 40 / 81
SPK_N
0R
0R
SPK_P
Module
Close to Receiver
NF
33 pF
10 pF
33 pF
Differential
layout
0603
TVS
TVS
0R
0R
Figure 17: Reference Design for Receiver Interface
4.2. USB Interface
EG915U series module provides one integrated Universal Serial Bus (USB) interface which complies with
the USB 2.0 specification and supports full-speed (12 Mbps) and high-speed (480 Mbps) modes. The
USB interface can only serve as a slave device and is used for AT command communication, data
transmission, software debugging and firmware upgrade.
Table 10: Functions of the USB Interface
Functions
Data communication with external AP
Y
AT command communication
Y
Data transmission
Y
GNSS NMEA output
N
Software debugging
Y
Firmware upgrade
Y
Voice over USB
N