LG U8120 Service Manual page 73

3. TECHNICAL BRIEF
The control flow for the Radio is shown in Figure 3-2.
Figure 3-2. RF control signal flow diagram
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.
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