Product Info

LTE Standard Module Series
EC21 Hardware Design
EC21_Hardware_Design 7 / 120
3.14.1. WLAN Interface ........................................................................................................... 62
3.14.2. BT Interface* ................................................................................................................ 62
3.15. ADC Interfaces ...................................................................................................................... 62
3.16. SGMII Interface ..................................................................................................................... 63
3.17. Network Status Indication ...................................................................................................... 66
3.18. STATUS ................................................................................................................................ 67
3.19. Behaviors of RI ..................................................................................................................... 68
3.20. USB_BOOT Interface ............................................................................................................ 69
4 GNSS Receiver ................................................................................................................................ 71
4.1. General Description .............................................................................................................. 71
4.2. GNSS Performance .............................................................................................................. 71
4.3. Layout Guidelines ................................................................................................................. 72
5 Antenna Interfaces .......................................................................................................................... 73
5.1. Main/Rx-diversity Antenna Interfaces.................................................................................... 73
5.1.1. Pin Definition ................................................................................................................ 73
5.1.2. Operating Frequency ................................................................................................... 73
5.1.3. Reference Design of RF Antenna Interface ................................................................. 74
5.1.4.
Reference Design of RF Layout ................................................................................... 75
5.2. GNSS Antenna Interface ....................................................................................................... 77
5.3. Antenna Installation ............................................................................................................... 79
5.3.1. Antenna Requirement .................................................................................................. 79
5.3.2. Recommended RF Connector for Antenna Installation ................................................ 80
6 Electrical, Reliability and Radio Characteristics .......................................................................... 82
6.1. Absolute Maximum Ratings .................................................................................................. 82
6.2. Power Supply Ratings ........................................................................................................... 83
6.3. Operation and Storage Temperatures ................................................................................... 83
6.4. Current Consumption ............................................................................................................ 84
6.5. RF Output Power .................................................................................................................. 98
6.6. RF Receiving Sensitivity ....................................................................................................... 99
6.7. Electrostatic Discharge ....................................................................................................... 105
6.8. Thermal Consideration ........................................................................................................ 105
7 Mechanical Dimensions................................................................................................................ 108
7.1. Mechanical Dimensions of the Module................................................................................ 108
7.2. Recommended Footprint
...................................................................................................... 110
7.3. Design Effect Drawings of the Module ................................................................................. 111
8 Storage, Manufacturing and Packaging ...................................................................................... 112
8.1. Storage................................................................................................................................. 112
8.2. Manufacturing and Soldering ............................................................................................... 113
8.3. Packaging ............................................................................................................................ 114
9 Appendix A References ................................................................................................................ 116
10 Appendix B GPRS Coding Schemes ........................................................................................... 120