W Sub System - LG GT540 Service Manual

3. TECHNICAL BRIEF
3.12 H/W Sub System
3.12 H/W Sub System
3.12.1. RF Interface
3.12.1. RF Interface
3.12.1.1. RTR6285 (WCDMA_Tx, GSM_Tx/Rx)
3.12.1.1. RTR6285 (WCDMA_Tx, GSM_Tx/Rx)
MSM7227 controls RF part(RTR6285) using these signals.
MSM7227 controls RF part(RTR6285) using these signals.
RTR6285_SSBI : SSBI I/F signals for control Sub-chipset
RTR6285_SSBI : SSBI I/F signals for control Sub-chipset
RTR_TXON : Power AMP on RF part
RTR_TXON : Power AMP on RF part
RTR_RX_I/Q_M/P, RTR_TX_I/Q_M/P : I/Q for T/Rx of RF
RTR_RX_I/Q_M/P, RTR_TX_I/Q_M/P : I/Q for T/Rx of RF
RTR_DAC_REF : Reference input to the MSM Tx data DACs
RTR_DAC_REF : Reference input to the MSM Tx data DACs
3.12.1.2. the others
3.12.1.2. the others
TRK_LO_ADJ : TCXO(19.2M) Control
TRK_LO_ADJ : TCXO(19.2M) Control
PA_ON0/PA_RANGE0 : WCDMA(2100) TX Power Amp Enable
PA_ON0/PA_RANGE0 : WCDMA(2100) TX Power Amp Enable
ANT_SEL[0-3] : Ant Switch Module Mode Selection(WCDMA,GSM Tx/Rx,DCS-PCS Tx/Rx)
ANT_SEL[0-3] : Ant Switch Module Mode Selection(WCDMA,GSM Tx/Rx,DCS-PCS Tx/Rx)
GSM_PA_RAMP : Power Amp Gain Control of APC_IC
GSM_PA_RAMP : Power Amp Gain Control of APC_IC
3.12.1.3. RF2815 (GPS LNA)
3.12.1.3. RF2815 (GPS LNA)
Swift RF Block Diagram
* GPS_LNA_EN : GPS LNA Enable Signal (GPS LNA Shutdown)
* GPS_LNA_EN : GPS LNA Enable Signal (GPS LNA Shutdown)
W2100
DUPLEXER
W(1900)
DUPLEXER
FRONT
END
MODULE Rx SAW
SKY77544
Ant Sel 0,1,2,3
LGE Internal Use Only
W900
WCDMA
Coupler
PAM
TX SAW
WCDMA
W2100
Coupler TX SAW
PAM
WCDMA
W1900
W900
TX SAW
Coupler
DUPLEXER PAM
W2100
RX saw
LNA
GPS_LNA_EN
GSM 850
RX SAW
GSM 900
RX SAW
DCS1800
RX SAW
PCS1900
RX SAW
Figure. RF Interface Block Diagram
Figure. RF Interface Block Diagram
RTR6285
HB_RF_OUT3
HB_RF_OUT2
LB_RF_OUT2
TCXO
TX_BIAS
PRX_IP
PDET_IN
PRX_IN
WPRXLBP PRX_QP
WPRXLBN PRX_QN
WPRXHBP
DRX_IP
WPRXHBN
DRX_IN
WPRXSE2_IN
DRX_QP
WPRXSE2_OUT
DRX_QN
WB_MX_INP
WB_MX_INM
GPS_IN
TX_QP
TX_QN
LB_RF_OUT1
TX_IP
TX_IN
HB_RF_OUT1
GCELL_INP
DAC_IREF
GCELL_INN
SBDT
EGSM_INP
RF_ON
EGSM_INN
DCS_INP
DCS_INN
WPRXSE1_IN
GPCS_INP
GPCS_INN VDDA
- 50 - Copyright © 2010 LG Electronics. Inc. All right reserved.
LGE Internal Use Only
VCTCXO D-Flip
TRK_LO_ADJ
19.2MHz
Flop
USBPHY_SYSCLK
BUFFER
PM7540
TCXO_IN TCXO_EN GPIO_105
SSBI TCXO_OUT TCXO
I_IP_CH0
I_IM_CH0
Q_IP_CH0
Q_IM_CH0
I_IP_CH1
I_IM_CH1
Q_IP_CH1
Q_IM_CH1
MSM7227
I_OUT_P
I_OUT_N
Q_OUT_P
Q_OUT_N
DAC_REF
GPIO_59
TX_ON
GPIO_106
WCDMA_900_ON GPIO_22
WCDMA_1900_ON GPIO_110
WCDMA_2100_ON PA_ON0
GPIO_58
GPIO_72
GPIO_73
GPIO_74
GPIO_75
Challenge
Only for training and service purposes
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