H/W Sub System - LG U990 Service Manual

3.10 H/W Sub System

3.10.1 RF Interface
A. RTR6275(WCDMA_Tx, GSM_Tx/Rx)
MSM6280 controls RF part(RTR6275) using these signals.
• SBST : SSBI I/F signals for control Sub-chipset
• PA_ON1 : Power AMP on RF part
• RX0_I/Q_M/P,TX_I/Q_M/P : I/Q for T/Rx of RF
• TX_AGC_ADJ : control the gain of the Tx signal prior to the power amplifier
• DAC_REF : Reference input to the MSM Tx data DACs
XMEM1_CS_N3_SDRAM1_CS_N1_GPIO77
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
SBDT1_GPIO1
H11
PA_ON1_GPIO2
D5
GRFC9_GPIO12
J21
CAMCLK_PO_GP_MN_GPIO13
A6
GPIO28
N19
USB_RX_DATA_GPIO29
W15
XMEM2_CS_N2_GPIO35
AA15
XMEM2_CS_N3_GPIO36
AE13
LCD_EN_GPIO37
H9
GPIO43
B6
SYNTH2_GPIO65
F8
GPIO66
AA1
XMEM1_CS_N1_GPIO76
Y6
L25
UART3_RFR_N_GPIO87
H6
UART2_DP_RX_DATA_GPIO89
F18
SYNTH0_GP_PDM0_GPIO92
H18 R215 0
SBST1_GPIO93
H13
TX_AGC_ADJ
L13
TRK_LO_ADJ
F19
TCXO_EN_GPIO94
F17
PA_ON0
A12
Q_OUT_N
B12
Q_OUT
A13
I_OUT_N
B13
I_OUT
F12
DAC_REF
W23
Q_IM_CH1
V23
Q_IP_CH1
V25
I_IM_CH1
W25
I_IP_CH1
AA25
Q_IM_CH0
Y25
Q_IP_CH0
AB25
I_IM_CH0
AC25
I_IP_CH0
D17
GP_PDM2_PA_RAN_GE1
H17
GP_PDM1_PA_RAN_GE0
H15
TRST_N
D16
TCK
F15
TMS
D15
TDI
A17
TDO
H16
RTCK
K19
AUX_PCM_CLK_GRFC14_GPIO80
N21
AUX_PCM_DIN_GRFC13_GPIO14
G4
AUX_PCM_DOUT_GRFC12_GPIO103
J8
AUX_PCM_SYNC_GRFC11_GPIO102
H12
TX_ON_GRFC10
B4
GRFC8_GPIO11
T23
GRFC7_GPIO10
T19
GRFX6_GPIO9
D11
GRFC5_AUX_SBST_GPIO8
H10
GRFC4_AUX_SBCK_GPIO7
F10
GRFC3_GPIO6
D9
GRFC2_GPIO5
A8
GRFC1_AUX_SBDT_GPIO4
B8
GRFC0_GPIO3
G23
BT_CLK_GPIO25
F23
BT_SBST_GPIO24
E26
BT_SBCK_GPIO23
E25
BT_SBDT_GPIO22
H21
BT_TX_RX_N_GPIO21
R19
BT_DATA_GPIO20
A22
Figure. Schematic of RF Interface of MSM6280
3. TECHNICAL BRIEF
LIN_INVERTER
LIN_MOTOR_EN
CAM_MCLK
LCD_IF_MODE
USB_SELECT_N
CAM_MODE3_N
VGA_CAM_PWDN
LCD_LDO_EN
MICROSD_DETECT
HOOK_SENSE_N
RMT_INT
HP_AMP_EN
CAM_SELECT_N
LCD_RESET_N
MMP_INT_N
TX_AGC_ADJ
R211 2K
TRK_LO_ADJ
TCXO_EN
C223
PA_ON
33nF
(WCMDA 2100 PAM Enable)
TX_QM
TX_QP
TX_IM
TX_IP
DAC_REF
RX_QM
RX_QP
RX_IM
RX_IP
PA_R1
LIN_PWM_MAG
MMP_HPCM_CLK
MMP_HPCM_DI
MMP_HPCM_DO
MMP_HPCM_FSYNC
TX_ON
ANT_SEL2
ANT_SEL1
ANT_SEL0
CAM_MODE1_N
FM_INTX
FM_BUSEN
GSM_PA_BAND
GSM_PA_EN
VGA_CAM_RESET_N
R213
BT_CLK NA
BT_SBST
BT_SBCK
BT_SBDT
BT_TX_RX_N
BT_DATA
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LGE Internal Use Only