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LTE Module

EC20 Hardware Design

EC20_Hardware_Design Confidential / Released 5 / 83

Table Index

TABLE 1: EC20 FREQUENCY BANDS .............................................................................................................. 9

TABLE 2: EC20 KEY FEATURES ...................................................................................................................... 11

TABLE 3: IO PARAMETERS DEFINITION ........................................................................................................ 17

TABLE 4: PIN DESCRIPTION ........................................................................................................................... 17

TABLE 5: OVERVIEW OF OPERATING MODES ............................................................................................. 22

TABLE 6: VBAT AND GND PINS ....................................................................................................................... 27

TABLE 7: PWRKEY PIN DESCRIPTION .......................................................................................................... 29

TABLE 8: RESET_N PIN DESCRIPTION ......................................................................................................... 32

TABLE 9: PIN DEFINITION OF THE USIM INTERFACE ................................................................................. 34

TABLE 10: USB PIN DESCRIPTION ................................................................................................................ 36

TABLE 11: PIN DEFINITION OF THE UART INTERFACE ............................................................................... 37

TABLE 12: PIN DEFINITION OF THE DEBUG UART INTERFACE ................................................................. 38

TABLE 13: LOGIC LEVELS OF DIGITAL I/O .................................................................................................... 38

TABLE 14: PIN DEFINITION OF PCM AND I2C INTERFACE .......................................................................... 41

TABLE 15: PIN DEFINITION OF THE ADC ...................................................................................................... 42

TABLE 16: CHARACTERISTIC OF THE ADC .................................................................................................. 43

TABLE 17: PIN DEFINITION OF NETWORK INDICATOR ............................................................................... 43

TABLE 18: WORKING STATE OF THE NETWORK INDICATOR..................................................................... 43

TABLE 19: PIN DEFINITION OF STATUS ........................................................................................................ 44

TABLE 20: BEHAVIOR OF THE RI ................................................................................................................... 45

TABLE 21: GNSS PERFORMANCE ................................................................................................................. 47

TABLE 22: PIN DEFINITION OF THE RF ANTENNA ....................................................................................... 49

TABLE 23: THE MODULE OPERATING FREQUENCIES ................................................................................ 49

TABLE 24: PIN DEFINITION OF GNSS ANTENNA .......................................................................................... 50

TABLE 25: GNSS FREQUENCY ....................................................................................................................... 51

TABLE 26: ANTENNA REQUIREMENTS .......................................................................................................... 51

TABLE 27: ABSOLUTE MAXIMUM RATINGS .................................................................................................. 55

TABLE 28: THE MODULE POWER SUPPLY RATINGS .................................................................................. 56

TABLE 29: OPERATING TEMPERATURE ........................................................................................................ 56

TABLE 30: EC20 CURRENT CONSUMPTION ................................................................................................. 57

TABLE 34: CONDUCTED RF OUTPUT POWER ................................................................... 错误!未定义书签。

TABLE 35: EC20 CONDUCTED RF RECEIVING SENSITIVITY ...................................................................... 59

TABLE 39: ELECTROSTATICS DISCHARGE CHARACTERISTICS ............................................................... 59

TABLE 40: RELATED DOCUMENTS ................................................................................................................ 69

TABLE 41: TERMS AND ABBREVIATIONS ...................................................................................................... 69

TABLE 42: DESCRIPTION OF DIFFERENT CODING SCHEMES .................................................................. 73

TABLE 43: GPRS MULTI-SLOT CLASSES ...................................................................................................... 74

TABLE 44: EDGE MODULATION AND CODING SCHEME ............................................................................. 75