Rf Function Block - Panasonic EB-X300 Service Manual

5.1.2. RF Function Block

GSM
DCS
PCS
GSM
PA
PA
DCS
PCS
U1101
LNA900IN
LNA1800IN
LNA1900IN
LOG EN
UVTUNE
VCPO
LOG EN
TXVCO
TLCPO
CP
U1201
RF Transceiver with Power Ramping Controller, Integrated Crystal Oscillator for Multi-Band GSM, GPRS and EDGE Applications
Figure 5.1. : RF Function Block Diagram
DC O/C
Σ∆
FRAC-N PLL
DIV
DIV Σ
– 5-2 –
RXI+
RXI–
RQI+
RQI–
T/H
DC O/C DC O/C
DATA, CLKL
FREF
26 MHz
VCTCXO
TXI+
TXI–
90
TQI+
TQI–