LG CU405 Service Manual page 23

3. TECHNICAL BRIEF
1800/1900
850/900
SPDT
850
Coupler
1900
Coupler
GSM Tx/Rx
GSM
TX_SAW
PAM
900
GSM 850 Rx
GSM-VCO
GSM 900 Rx
GSM 1800 Rx
GSM 1900 Rx
RTR6275
WCDMA
Tx/Rx
TX_SAW
W-VCO
WCDMA
PAM
TX_SAW
HDET
LNA
1900
RX_SAW
RFR6275
LNA
850
RX_SAW
Figure. Simplified Block Diagram
I/Q
MSM6280
SS
BI
SS
BI
W-VCO
Bluetooth
- 24 -
VGA
Earpiece
MIC
SPEAKER
TPA2005
Stereo
Headset
LCD
( 2 QCIF)
NAND
512M
SDRAM
512M
Power
SS
USIM
BI
PM665
USB
0
+5V