Service Guide

LTE Standard Module Series
EG915U_Series_Hardware_Design 7 / 90
Table Index
Table 1: Special Mark ..................................................................................................................................11
Table 2: Brief Introduction of the Module ................................................................................................... 12
Table 3: Frequency Bands ......................................................................................................................... 12
Table 4: Key Features ................................................................................................................................ 13
Table 5: I/O Parameters Definition ............................................................................................................. 18
Table 6: Pin Description ............................................................................................................................. 18
Table 7: Overview of Operating Modes ...................................................................................................... 27
Table 8: Pin Definition of Power Supply ..................................................................................................... 32
Table 9: Pin Definition of PWRKEY ............................................................................................................ 35
Table 10: Pin Description of RESET_N ...................................................................................................... 38
Table 11: Pin Definition of Analog Audio Interfaces ................................................................................... 40
Table 12: Functions of USB Interface ........................................................................................................ 42
Table 13: Pin Definition of USB Interface ................................................................................................... 43
Table 14: Pin Definition of USB_BOOT Interface ...................................................................................... 44
Table 15: Pin Definition of (U)SIM Interfaces ............................................................................................. 45
Table 16: Pin Definition of I2C and PCM Interfaces .................................................................................. 47
Table 17: Pin Definition of Main UART Interface ....................................................................................... 49
Table 18: Pin Definition of Debug UART Interface ..................................................................................... 49
Table 19: Auxiliary UART Interface ............................................................................................................ 49
Table 20: Pin Definition of ADC Interfaces ................................................................................................. 51
Table 21: Characteristics of ADC Interfaces .............................................................................................. 51
Table 22: Pin Definition of SPI Interface .................................................................................................... 52
Table 23: Pin Definition of PSM Interface .................................................................................................. 53
Table 24: Pin Definition of Indication Signals ............................................................................................. 53
Table 25: Pin Definition of Network Connection Status/Activity Indication ................................................ 53
Table 26: Working States of Network Connection Status/Activity Indication ............................................. 53
Table 27: Pin Definition of STATUS ............................................................................................................ 54
Table 28: Behaviors of MAIN_RI ................................................................................................................ 55
Table 29: Pin Definition of RF Antennas .................................................................................................... 56
Table 30: Operating Frequency of EG915U-CN ........................................................................................ 56
Table 31: Operating Frequency of EG915U-EU ........................................................................................ 57
Table 32: Operating Frequency of EG915U-LA ......................................................................................... 57
Table 33: Requirements for Antenna Design ............................................................................................. 61
Table 34: Absolute Maximum Ratings ........................................................................................................ 64
Table 35: Power Supply Ratings ................................................................................................................ 64
Table 36: EG915U-CN Current Consumption ............................................................................................ 65
Table 37: EG915U-EU Current Consumption ............................................................................................ 67
Table 38: EG915U-LA Current Consumption ............................................................................................. 70
Table 39: EG915U-CN RF Output Power .................................................................................................. 73
Table 40: EG915U-EU RF Output Power................................................................................................... 73
Table 41: EG915U-LA RF Output Power ................................................................................................... 73