General Description - LG GD310 Service Manual

3. Technical Brief

3.17. 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 27. RF transceiver PMB6272 SMARTi-PM functional block diagram
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