Wavecom G2 Podręcznik Użytkownika Pobierz pdf (Strona 4)

CM52 Integrators’ Manual

WI_DEV_CM52_UGD_001-001

Page 4 of 53

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2.4.3 POWER CONSUMPTION................................................................................................ 23

2.4.3.1 VCC_MAIN SUPPLY POWER CONSUMPTION................................................................... 24

2.4.3.2 VCC_AUX SUPPLY POWER CONSUMPTION..................................................................... 24

2.4.3.3 POWER DOWN MODE (MINIMUM DC POWER CONSUMPTION) ........................................ 25

2.4.4 VREF SIGNAL DETAILS ................................................................................................. 25

2.5 REAL TIME CLOCK (RTC) CIRCUIT........................................................................................... 26

2.5.1 RTC INITIALIZATION.................................................................................................... 26

2.5.2 RTC FUNCTIONAL BLOCK DIAGRAM............................................................................. 26

2.6 AUDIO INTERFACE................................................................................................................. 27

2.6.1 DIGITAL AUDIO ........................................................................................................... 28

2.6.1.1 DATA FORMAT............................................................................................................ 28

2.6.1.2 TIMING ....................................................................................................................... 29

2.6.2 ANALOG AUDIO .......................................................................................................... 30

2.7 SERIAL DATA INTERFACE ....................................................................................................... 33

2.8 ANTENNA INTERFACE............................................................................................................ 33

2.8.1 ANTENNA CONNECTOR............................................................................................... 34

2.8.2 RF OUTPUT POWER...................................................................................................... 35

2.8.3 CARRIER APPROVAL .................................................................................................... 36

2.8.4 ANTENNA DIAGNOSTICS ............................................................................................. 36

3 Recommended Interface Circuitry................................................................... 38

3.1 STATUS GROUP RECOMMENDED CIRCUITRY........................................................................... 38

3.1.1 MODULE_PWR_EN_B .................................................................................................... 39

3.1.2 VREF ........................................................................................................................... 39

3.1.3 RI ............................................................................................................................... 40

3.1.4 HW_SD........................................................................................................................ 40

3.2 DATA GROUP RECOMMENDED CIRCUITRY.............................................................................. 42

3.2.1 VPPFLASH/DCD........................................................................................................... 42

3.3 PCM GROUP RECOMMENDED CIRCUITRY ................................................................................ 43

3.4 ANALOG AUDIO GROUP RECOMMENDED CIRCUITRY .............................................................. 44

3.4.1 CREATING AN ANALOG GROUND................................................................................. 44

3.4.2 ANALOG GROUND VS. AGND....................................................................................... 45

3.4.3 MICROPHONE PATH .................................................................................................... 45

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Wavecom G2 Podręcznik Użytkownika Strona 4