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5-1. RF Solution Block Diagram
MSM6250
Quaderature
down
converter
UMTS
Rx BPF
duplxer
GSM_ANT_SEL0,1,2 from MSM
SBDT, SBST, SBCK from MSM
TCXO
12.9MHz
TRK_LO_ADJ
SBDT, SBST, SBCK from MSM
UHF_VCO_EN
PA_ON from MSM
UMTS
Rx BPF
RTR6200
TRK_LO_ADJ
Quaderature up
converter
PLL#2
VCO_BAND_SEL
TX_I/Q, M/P
Quaderature up
converter
LO
generator
Quaderature
down converter
Quaderature
down converter
GSM RX M/P
DCS RX M/P
RX_I/Q, M/P
SBDT, SBST, SBCK
RF_ON_TX_ON
PLL#1
RX_I/Q,
M/P
GSM
Rx BPF
DCS
Rx BPF
GSM_PA_BAND from MSM
GSM_PA_PWR_SV from MSM
GSM_PA_PWR_CTL from MSM
DCS_VCO_EN_N
GSM_VCO_EN_N
U-BSI RF block diagram, edited by TS