Block Diagram; Gsm & Wcdma Rf Block - LG U310 Service Manual

6. BLOCK DIAGRAM

6.1 GSM & WCDMA RF Block
UMTS RF
F
E
GSM RF
M
GSM
Tri -band
PAM
BLUETOOTH RF
RX SAW
2110-2170
UMTS
TX_SAW
Coupler
1920-1980
PAM
HDET.
GSM Loop
filter
TX VCO
- 141 -
SBST/CK/DT -
RFR6250
TCXO
PM6650
VCTCXO
Loop
19.2MHz
filter
- UMTS
VCONTROL-
PLL1
OUT
SBST/CK/
RF_ON(TX_
-GSM900_INP
RTR6250 RX_IQ -
-GSM900_INN
TX_IQ -
-GSM1800_INP
-GSM1800_INN
DAC_REF
-GSM1900_INP
-GSM1900_INN
-TX_MOD_CP
-TX_VCO_FB
BLUETOOTH
RF MODULE
TCXO
BT_SBST/CK/DT
BT_RX_TX_N
BT_DATA
6. BLOCK DIAGRAM
RX_IQ -
- RX_IQ
-SBST/CK/DT
SBST/CK/DT
-TCXO
-TCXO_EN
-
V
TRK_LO_AD J
c
-
TX_AGC_ADJ
-HDEt1
MSM6250A
DT -
-
TX_ON
ON) -
-
TX_IQ
-DAC_REF
-
BT_SBST/CK/DT
BT_RX_TX_N
BT_DATA