General Description - LG GX500 Service Manual

3. TECHNICAL BRIEF
GX500 Operational Description

3.16 General Description

The RF transceiver (PMB 6272 SMARTi-PM) is an integrated single chip, quad-band transceiver for
GSM850/GSM900/GSM1800/GSM1900 designed for voice and data transfer applications. The transceiver
provides an analog I/Q baseband interface and consists of a direct conversion receiver and a quad-band polar
transmitter for GSM and EDGE with integrated PGA functionality. Further on a completely integrated
SD-synthesizer with HSCSD and GPRS/EDGE capability, a digitally controlled reference oscillator with three
outputs, a fully integrated quad-band RF oscillator and a three wire bus interface with all necessary control
circuits complete the transceiver.
Figure 3-30 RF transceiver PMB6272 SMARTi-PM functional block diagram
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