User guide

CM52 Integrators’ Manual
CM52 Integrators’ Manual
WI_DEV_CM52_UGD_001-001
Page 4 of 53
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Ce document est la propriété exclusive de WAVECOM. Il ne peut être communiqué ou divulgué à des tiers sans son autorisation préalable
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