User's Manual

LTE Module Series
EC21 Hardware Design
EC21_Hardware_Design Confidential / Released 5 / 94
3.15. STATUS ................................................................................................................................ 50
3.16. Behavior of the RI ................................................................................................................. 51
3.17. SGMII Interface ..................................................................................................................... 51
3.18. Wireless Connectivity Interfaces ........................................................................................... 54
3.18.1. WLAN Interface ........................................................................................................... 56
3.18.2. BT Interface* ................................................................................................................ 56
3.19. USB_BOOT Interface ............................................................................................................ 57
4 GNSS Receiver ................................................................................................................................ 58
4.1. General Description .............................................................................................................. 58
4.2. GNSS Performance .............................................................................................................. 58
4.3. Layout Guidelines ................................................................................................................. 59
5 Antenna Interfaces .......................................................................................................................... 60
5.1. Main/Rx-diversity Antenna Interface ..................................................................................... 60
5.1.1. Pin Definition ................................................................................................................ 60
5.1.2. Operating Frequency ................................................................................................... 60
5.1.3. Reference Design of RF Antenna Interface ................................................................. 61
5.1.4. Reference Design of RF Layout ................................................................................... 62
5.2.
GNSS Antenna Interface ....................................................................................................... 64
5.3. Antenna Installation .............................................................................................................. 65
5.3.1. Antenna Requirement .................................................................................................. 65
5.3.2. Recommended RF Connector for Antenna Installation ................................................ 66
6 Electrical, Reliability and Radio Characteristics .......................................................................... 68
6.1. Absolute Maximum Ratings .................................................................................................. 68
6.2. Power Supply Ratings ........................................................................................................... 68
6.3. Operating Temperature ......................................................................................................... 69
6.4. Current Consumption ............................................................................................................ 70
6.5. RF Output Power .................................................................................................................. 76
6.6. RF Receiving Sensitivity ....................................................................................................... 76
6.7. Electrostatic Discharge ......................................................................................................... 80
7 Mechanical Dimensions.................................................................................................................. 81
7.1. Mechanical Dimensions of the Module.................................................................................. 81
7.2. Recommended Footprint ....................................................................................................... 83
7.3. Design Effect Drawings of the Module .................................................................................. 84
8
Storage, Manufacturing and Packaging ........................................................................................ 85
8.1. Storage ................................................................................................................................. 85
8.2. Manufacturing and Soldering ................................................................................................ 86
8.3. Packaging ............................................................................................................................. 87
9 Appendix A References .................................................................................................................. 88
10 Appendix B GPRS Coding Schemes ............................................................................................. 92
11 Appendix C GPRS Multi-slot Classes ............................................................................................ 93
12 Appendix D EDGE Modulation and Coding Schemes .................................................................. 94