LG CU920 Manual page 160

6. BLOCK DIAGRAM
FRONT
UMTS RF
END
GSM RF
MODULE
GSM
QUAD PA
BLUETOOTH RF
LGE Internal Use Only
-LB_LN A_IN
-HB_LN A_IN
TX SAW
Couple r
FILTER
WCDMA
Dual PA
-LB_RF _OUT2
TX SAW
Couple r
-HB_RF_OUT1
FILTER
-PWD_DET_IN
-GCELL _INP
-GCELL _INN
-EGSM_INP
-EGSM_INN
-DCS_INP
-DCS_INN
-GPCS_INP
-GPCS_INN
TX SAW
GCELL/E GSM
-LB_RF _OUT1
FILTER
-HB_RF_OUT2
DCS/PCS
RF Block Diagram
RFR6275
PLL
SBDT -
Loop
RX SAW
RX SAW PM6650
filter
FILTER
FILTER
VCTCXO
19.2MHz
VCONTROL-
RF_ON -
RX_IQ -
RTR6275
DAC_REF -
BLUETOOTH RF MODULE
TCXO
BT_SBST/CK/DT
BT_RX_TX_N
BT_DATA
Copyright © 2008 LG Electronics. Inc. All right reserved.
- 162 -
RX_IQ - - RX_IQ
SSBI - - SSBDT_RFR
-SSBDT_PM
-TCXO
-TCXO_EN
-TRK_L O_ADJ
MSM6281
-TX_AGC_ADJ
SBDT - -SSBDT_RTR
-TX_ON
TX_IQ - -TX_IQ
-DAC_REF
BT_SBST/CK/DT
BT_RX_TX_N
BT_DATA
Only for training and service purposes