User's Manual

0
LTE Module
EC25-A User Manual
EC25-A_User_Manual Confidential / Released 4 / 7
3.11. UART Interface ....................................................................................................................... 36
3.12. PCM and I2C Interface ........................................................................................................... 38
3.13. ADC Function ......................................................................................................................... 41
3.14. Network Status Indication .................................................................................................... 41
3.15. STATUS................................................................................................................................... 42
3.16. Behavior of the RI .................................................................................................................. 43
4 GNSS Receiver ................................................................................................................................... 45
4.1. General Description .............................................................................................................. 45
4.2. GNSS Performance ............................................................................................................... 45
4.3. Layout Guideline.................................................................................................................... 46
5 Antenna Interface ............................................................................................................................... 47
5.1. Main/Rx-diversity Antenna Interface ................................................................................... 47
5.1.1. Pin Definition ................................................................................................................ 47
5.1.2. Operating Frequency ................................................................................................... 47
5.1.3. Reference Design ......................................................................................................... 48
5.2. GNSS Antenna Interface ....................................................................................................... 48
5.3. Antenna Installation .............................................................................................................. 50
5.3.1. Antenna Requirement .................................................................................................. 50
5.3.2. Install the Antenna with RF Connector ...................................................................... 50
6 Electrical, Reliability and Radio Characteristics ............................................................................ 53
6.1. Absolute Maximum Ratings ................................................................................................. 53
6.2. Power Supply Ratings ........................................................................................................... 53
6.3. Operating Temperature ......................................................................................................... 54
6.4. Current Consumption ........................................................................................................... 54
6.5. RF Output Power ................................................................................................................... 54
6.6. RF Receiving Sensitivity ....................................................................................................... 55
6.7. Electrostatic Discharge ......................................................................................................... 55
7 Mechanical Dimensions .................................................................................................................... 57
7.1. Mechanical Dimensions of the Module ............................................................................... 57
7.2. Footprint of Recommendation ............................................................................................. 59
7.3. Top View of the Module ........................................................................................................ 60
7.4. Bottom View of the Module .................................................................................................. 60
8 Storage and Manufacturing .............................................................................................................. 61
8.1. Storage.................................................................................................................................... 61
8.2. Manufacturing and Welding ................................................................................................. 61
8.3. Packaging ............................................................................................................................... 62
9 Appendix A Reference ....................................................................................................................... 64
10 Appendix B GPRS Coding Scheme ................................................................................................. 68
11 Appendix C GPRS Multi-slot Class .................................................................................................. 69
12 Appendix D EDGE Modulation and Coding Scheme ..................................................................... 70