Product Info

LTE Standard Module Series
EC25 Mini PCIe Hardware Design
EC25_Mini_PCIe_Hardware_Design 6 / 80
Contents
About the Document ................................................................................................................................... 2
Contents ....................................................................................................................................................... 6
Table Index ................................................................................................................................................... 8
Figure Index ................................................................................................................................................. 9
1 Introduction ........................................................................................................................................ 10
1.1. FCC Certification Requirements. ............................................................................................. 10
1.2. Safety Information.................................................................................................................... 13
2 Product Concept ................................................................................................................................ 14
2.1. General Description ................................................................................................................. 14
2.2. Description of Module Series .................................................................................................. 15
2.3. Key Features ........................................................................................................................... 17
3 Application Interfaces ....................................................................................................................... 20
3.1. Pin Assignment ........................................................................................................................ 20
3.2. Pin Description ......................................................................................................................... 21
3.3. Operating Modes ..................................................................................................................... 24
3.4. Power Saving ........................................................................................................................... 24
3.4.1. Sleep Mode .................................................................................................................... 24
3.4.2. Airplane Mode ................................................................................................................ 25
3.5. Power Supply ........................................................................................................................... 25
3.6. (U)SIM Interface ...................................................................................................................... 26
3.7. USB Interface .......................................................................................................................... 28
3.8. UART Interfaces ...................................................................................................................... 29
3.8.1. Main UART Interface ...................................................................................................... 29
3.8.2. COEX UART Interface* .................................................................................................. 30
3.9. PCM and I2C Interfaces .......................................................................................................... 31
3.10. Control and Indication Signals ................................................................................................. 34
3.10.1. RI Signal ......................................................................................................................... 34
3.10.2. DTR Signal ..................................................................................................................... 35
3.10.3. W_DISABLE# Signal ...................................................................................................... 35
3.10.4. PERST# Signal .............................................................................................................. 35
3.10.5. LED_WWAN# Signal ..................................................................................................... 36
3.10.6. WAKE# Signal ................................................................................................................ 37
4 GNSS Receiver ................................................................................................................................... 38
4.1. General Description ................................................................................................................. 38
4.2. GNSS Performance ................................................................................................................. 38
4.3. GNSS Frequency..................................................................................................................... 39
5 Antenna Connection .......................................................................................................................... 40