LG GT540 - W Sub System

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LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
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3.12 H/W Sub System
3.12.1. RF Interface
3.12.1.1. RTR6285 (WCDMA_Tx, GSM_Tx/Rx)
MSM7227 controls RF part(RTR6285) using these signals.
 RTR6285_SSBI : SSBI I/F signals for control Sub-chipset
 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_DAC_REF : Reference input to the MSM Tx data DACs
3.12.1.2. the others
 TRK_LO_ADJ : TCXO(19.2M) Control
 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)
 GSM_PA_RAMP : Power Amp Gain Control of APC_IC
3.12.1.3. RF2815 (GPS LNA)
* GPS_LNA_EN : GPS LNA Enable Signal (GPS LNA Shutdown)
Figure. RF Interface Block Diagram
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ͽ͸ͶͺΟΥΖΣΟΒΝΆΤΖ΀ΟΝΪ
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3.12 H/W Sub System
3.12.1. RF Interface
3.12.1.1. RTR6285 (WCDMA_Tx, GSM_Tx/Rx)
MSM7227 controls RF part(RTR6285) using these signals.
 RTR6285_SSBI : SSBI I/F signals for control Sub-chipset
 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_DAC_REF : Reference input to the MSM Tx data DACs
3.12.1.2. the others
 TRK_LO_ADJ : TCXO(19.2M) Control
 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)
 GSM_PA_RAMP : Power Amp Gain Control of APC_IC
3.12.1.3. RF2815 (GPS LNA)
* GPS_LNA_EN : GPS LNA Enable Signal (GPS LNA Shutdown)
Figure. RF Interface Block Diagram
LGE Internal Use Only
Challenge 123
RTR6285
PM7540
FRONT
END
MODULE
SKY77544
TX_IP
TX_IN
PRX_IP
PRX_IN
DRX_IP
DRX_IN
TCXO
GCELL_INP
GCELL_INN
EGSM_INP
EGSM_INN
DCS_INP
DCS_INN
GPCS_INP
GPCS_INN
HB_RF_OUT2
HB_RF_OUT3
HB_RF_OUT1
LB_RF_OUT1
LB_RF_OUT2
RF_ON
DAC_IREF
SBDT
TX_BIAS
GPS_IN
WPRXHBP
WPRXHBN
WPRXLBP
WPRXLBN
WPRXSE1_IN
WPRXSE2_IN
PRX_QP
PRX_QN
DRX_QP
DRX_QN
TX_QP
TX_QN
GPIO_59
VCTCXO
19.2MHz
TX_ON
DAC_REF
GSM 900
RX SAW
DCS1800
RX SAW
GSM 850
RX SAW
PCS1900
RX SAW
I_IP_CH0
I_IM_CH0
Q_IP_CH0
Q_IM_CH0
I_IP_CH1
I_IM_CH1
Q_IP_CH1
Q_IM_CH1
I_OUT_P
I_OUT_N
Q_OUT_P
Q_OUT_N
Rx SAW
PDET_IN
W900
PAM
W900
DUPLEXER
W(1900)
DUPLEXER
W2100
DUPLEXER
Coupler
Coupler
Coupler
W1900
PAM
WCDMA
TX SAW
WCDMA
TX SAW
WCDMA
TX SAW
LNA
GPIO_105TCXO_EN
VDDA
GPIO_106
SSBI
TCXO
TCXO_OUT
TRK_LO_ADJ
TCXO_IN
BUFFER
Swift RF Block Diagram
W2100
PAM
MSM7227
Ant Sel 0,1,2,3
GPIO_72
GPIO_73
GPIO_74
GPIO_75
GPS_LNA_EN
GPIO_58
W2100
RX saw
WB_MX_INP
WB_MX_INM
WPRXSE2_OUT
USBPHY_SYSCLK
D-Flip
Flop
WCDMA_900_ON GPIO_22
WCDMA_1900_ON GPIO_110
WCDMA_2100_ON PA_ON0