LG E475F Service Manual page 116

[LGE475F] RF Block Diagram
GSM_PA_RAMP
Front-End-
Module
ANT_SEL[3:0]
SKY77584
GPS BPF
LGE Internal Use Only
DCS/PCS_Tx
GSM850/EGSM_Tx
GSM850/EGSM_Rx SAW
DCS/PCS_Rx SAW
WCDMA
PAM
RFOUT
Duplexer
(2100)
W2100
WCDMA
Duplexer
PAM
RFOUT
W850
W850
(850)
(850)
GPS_IN
GPS LNA
GPS_LNA_EN
HB_RF_OUT1
LB_RF_OUT1
PA_ON0
VEN
RFIN W2100_Tx
HB_RF_OUT3
RF Transceiver
PA_R0
VMODE
PA_ON1
VEN
W850_TX LB_RF_OUT2
RFIN W850_Tx
GPS_IN
PA_R0
VMODE
GPS_IN
PDET_IN
Rx_WCDMA_850 Rx_WCDMA_ 850
WPRXLBP/WPRXLBN
Rx_WCDMA_2100
WPRXSE2
Rx_W2100_LNA_OUT
WPRXSE2_OUT
WB_MIX_INP
WB_MIX_INM
W2100 Rx SAW
B9411
OUT
- 116 - Copyright © 2013 LG Electronics. Inc. All right reserved.
5. BLOCK DIAGRAM
ANT_SEL[3:0]
GPIO[72:75]
GPIO[72:75]
TX_ON
RF_ON
DAC_IREF
DAC_IREF
RTR6285_SSBI
GPIO59
SBOT
GSM_PA_RAMP
PA_POWER_CTL
GSM_PA_EN
GPIO80
GSM_PA_BAND
GPIO79
PA_ON0
PA_ON0
PA_ON1
GPIO22
PA_R0
PA_RANGE0
QCT
GPS_LNA_EN
RTR6285A
GPIO58
RTR_TXIP/IM,
RTR_TXQP/QM
RTR_RXIP/IM,
RTR_RXQP/QM
RTR_DRXIP/IM,
RTR_DRXQP/QM
TCXO
TCXO
TRX_LO_CNK
VCONT
RF Block Diagram
Only for training and service purposes
MSM7225A
QCT