Wavecom CM52 Integrator's Manual page 4

POWER CONSUMPTION ................................................................................................ 23
2.4.3
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
VREF SIGNAL DETAILS ................................................................................................. 25
2.4.4
2.5 REAL TIME CLOCK (RTC) CIRCUIT........................................................................................... 26
RTC INITIALIZATION.................................................................................................... 26
2.5.1
RTC FUNCTIONAL BLOCK DIAGRAM............................................................................. 26
2.5.2
2.6 AUDIO INTERFACE ................................................................................................................. 27
DIGITAL AUDIO ........................................................................................................... 28
2.6.1
2.6.1.1 DATA FORMAT............................................................................................................ 28
2.6.1.2 TIMING ....................................................................................................................... 29
ANALOG AUDIO .......................................................................................................... 30
2.6.2
2.7 SERIAL DATA INTERFACE ....................................................................................................... 33
2.8 ANTENNA INTERFACE ............................................................................................................ 33
ANTENNA CONNECTOR............................................................................................... 34
2.8.1
RF OUTPUT POWER...................................................................................................... 35
2.8.2
CARRIER APPROVAL .................................................................................................... 36
2.8.3
ANTENNA DIAGNOSTICS ............................................................................................. 36
2.8.4
3 Recommended Interface Circuitry................................................................... 38
3.1 STATUS GROUP RECOMMENDED CIRCUITRY........................................................................... 38
MODULE_PWR_EN_B .................................................................................................... 39
3.1.1
VREF ........................................................................................................................... 39
3.1.2
RI ............................................................................................................................... 40
3.1.3
HW_SD........................................................................................................................ 40
3.1.4
3.2 DATA GROUP RECOMMENDED CIRCUITRY.............................................................................. 42
VPPFLASH/DCD........................................................................................................... 42
3.2.1
3.3 PCM GROUP RECOMMENDED CIRCUITRY ................................................................................ 43
3.4 ANALOG AUDIO GROUP RECOMMENDED CIRCUITRY .............................................................. 44
CREATING AN ANALOG GROUND................................................................................. 44
3.4.1
ANALOG GROUND VS. AGND ....................................................................................... 45
3.4.2
MICROPHONE PATH .................................................................................................... 45
3.4.3
CM52 Integrators' Manual
WI_DEV_CM52_UGD_001-001
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CM52 Integrators' Manual