Technical Brief; Quad-Band Rf Edge Transceiver (Pmb6272, U602) - LG KE800 Service Manual

3. TECHNICAL BRIEF

3. TECHNICAL BRIEF

3.1 Quad-Band RF EDGE Transceiver (PMB6272, U602)

The PMB 6272 SMARTiPM 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 modulator
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. 3-1 FUNCTIONAL BLOCK DIAGRAM
- 15 -