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Antenna
Swit ch
WCDMA PA Ctrl
VCXO Ctrl
The MARITA(the main processor) controls the overall radio system. In the GSM/GPRS air interface
mode, this control is handled via direct interfaces to individual RF components.
The MARITA(the main processor) also handles the antenna switch mechanism for selection of mode.
In the W-CDMA mode, the RF system is managed via the Wanda (WCDMA digital base-band
coprocessor ASIC) and its DSP processor.
Wopy
WCDMA
PA
Wivi
Antenna Switch Ctrl
Ingela
GSM
PA
GSM/DCS Band select
GSM/DCS
PA Ctrl
Figure 3-6-2. RF control signal flow diagram
- 77 -
WCDMA
RF ASIC
Ctrl
Herta
GSM RF
ASIC Ctrl
Vincenne Ctrl
DAC Ctrl (Indirect
GSM PA Pwr Ctrl)
Vincenne
DAC Ctrl (Indirect WCDMA
PA Pwr Ctrl)
3. Technical Brief
WANDA
Mari ta
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