Contents
Safety Information ....................................................................................................................................... 3
About the Document ................................................................................................................................... 4
Table Index ................................................................................................................................................... 7
Figure Index ................................................................................................................................................. 8
1
Introduction ........................................................................................................................................ 10
1.1.
Special Mark ............................................................................................................................ 10
2
Product Overview .............................................................................................................................. 11
2.1.
2.2.
Key Features ........................................................................................................................... 13
2.3.
Functional Diagram ................................................................................................................. 15
2.4.
Pin Assignment ........................................................................................................................ 15
2.5.
Pin Description ........................................................................................................................ 17
2.6.
EVB ......................................................................................................................................... 25
3
Operating Characteristics ................................................................................................................. 26
3.1.
Operating Modes ..................................................................................................................... 26
3.2.
Sleep Mode ............................................................................................................................. 27
3.2.1.
3.2.2.
USB Application Scenario .............................................................................................. 27
3.2.2.1.
3.2.2.2.
3.3.
Airplane Mode ......................................................................................................................... 29
3.4.
Power Supply .......................................................................................................................... 30
3.4.1.
Power Supply Pins ......................................................................................................... 30
3.4.2.
3.4.3.
3.5.
Turn On ................................................................................................................................... 33
3.5.1.
3.6.
Turn Off .................................................................................................................................... 34
3.6.1.
3.6.2.
3.7.
Reset ....................................................................................................................................... 36
4
Application Interfaces ....................................................................................................................... 38
4.1.
Analog Audio Interfaces .......................................................................................................... 38
4.1.1.
Audio Interfaces Design ................................................................................................. 38
4.1.2.
4.1.3.
4.2.
USB Interface .......................................................................................................................... 40
4.3.
USB_BOOT Interface .............................................................................................................. 42
4.4.
(U)SIM Interface ...................................................................................................................... 43
4.5.
I2C and PCM Interfaces .......................................................................................................... 45
EG915U-EU_Hardware_Design
LTE Standard Module Series
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