Service Guide

LTE Standard Module Series
EG915U_Series_Hardware_Design 6 / 90
4.1.3. Receiver Interface Design .............................................................................................. 41
4.2. USB Interface .......................................................................................................................... 42
4.3. USB_BOOT Interface .............................................................................................................. 44
4.4. (U)SIM Interfaces .................................................................................................................... 45
4.5. I2C and PCM Interfaces .......................................................................................................... 47
4.6. UART Interfaces ...................................................................................................................... 48
4.7. ADC Interfaces ........................................................................................................................ 51
4.8. SPI Interface ............................................................................................................................ 52
4.9. PSM Interface* ........................................................................................................................ 52
4.10. Indication Signals .................................................................................................................... 53
4.10.1. NET_STATUS ......................................................................................................... 53
4.10.2. STATUS .................................................................................................................. 54
4.10.3. MAIN_RI.................................................................................................................. 55
5 Antenna Interfaces ............................................................................................................................. 56
5.1. Main Antenna and Bluetooth/Wi-Fi Scan Antenna Interfaces ................................................. 56
5.1.1. Pin Definition .................................................................................................................. 56
5.1.2. Operating Frequency ..................................................................................................... 56
5.1.3. Reference Design of Antenna Interfaces ....................................................................... 58
5.1.4. RF Routing Guidelines ................................................................................................... 59
5.2. Antenna Installation ................................................................................................................. 61
5.2.1. Antenna Design Requirement ........................................................................................ 61
5.2.2. RF Connector Recommendation ................................................................................... 61
6 Reliability, Radio, and Electrical Characteristics ........................................................................... 64
6.1. Absolute Maximum Ratings .................................................................................................... 64
6.2. Power Supply Ratings ............................................................................................................. 64
6.3. Power Consumption ................................................................................................................ 65
6.4. Tx Power ................................................................................................................................. 73
6.5. Rx Sensitivity ........................................................................................................................... 74
6.6. ESD ......................................................................................................................................... 76
6.7. Operating and Storage Temperatures ..................................................................................... 76
7 Mechanical Information ..................................................................................................................... 77
7.1. Mechanical Dimensions .......................................................................................................... 77
7.2 Recommended Footprint ......................................................................................................... 79
7.3 Top and Bottom Views............................................................................................................. 80
8 Storage, Manufacturing, and Packaging ......................................................................................... 81
8.1 Storage Conditions .................................................................................................................. 81
8.2 Manufacturing and Soldering .................................................................................................. 82
8.3 Packaging Specifications ........................................................................................................ 84
8.1.1. Carrier Tape .................................................................................................................... 84
8.1.2. Plastic Reel .................................................................................................................... 85
8.1.3. Packaging Process ........................................................................................................ 85
9 Appendix References ........................................................................................................................ 87