H/W Sub System - LG L602i Service Manual

3.10. H/W Sub System

3.10.1. RF Interface
A. RTR6250(WCDMA_Tx, GSM_Tx/Rx)
MSM6250A controls RF part(RTR6250) using these signals.
• SBST,SBDT,SBCK : SBI I/F signals for control Sub-chipset
• RX_I/Q,TX_I/Q : I/Q for T/Rx of RF
• TX_AGC_ADJ : control the transmit WCDMA output power.
• RF_ON_TX_ON : turn on/off TX IF separately PA_ON.
SBDT1_GPIO[1]
PA_ON[1]_GPIO[2]
ANT_SEL3_N_GPIO[12]
GP_MN_GPIO[13]
GPS_TCXO_GPIO[28]
USB_RX_DATA_GPIO[29]
XMEM2_CS_N[2]_GPIO[35]
XMEM2_CS_N[3]_GPIO[36]
LCD2_EN_GPIO[37]
ETM_PIPESTAT1B_GPIO[43]
ETM_TRACESYNC_GPIO[65]
BACKLIGHT_ETM_TRACECLK_GPIO[66]
XMEM1_CS_N[1]_GPIO[76]
SDRAM1_CS_N[1]_XMEM1_CS_N[3]_GPIO[77]
UART3_RFR_N_GPIO[87]
UART2_DP_RX_DATA_USIM_PWR_EN_GPIO[89]
GP_PDM[0]_GPIO[92]
SBST1_GPIO[93]
TX_AGC_ADJ
TRK_LO_ADJ
TCXO_EN_GPIO[94]
PA_ON[0]
Q_OUT_N
Q_OUT
I_OUT_N
Q_IM_CH1(Reserved)
Q_IP_CH1(Reserved)
I_IM_CH1(Reserved)
I_IP_CH1(Reserved)
Q_IM_CH0
Q_IP_CH0
I_IM_CH0
I_IP_CH0
PA_RANGE[1]_GP_PDM[2]
PA_RANGE[0]_GP_PDM[1]
TRST_N
GRFC[14]_GPIO[83]
GRFC[13]_GPIO[82]
GRFC[12]_GPIO[81]
GRFC[11]_GPIO[80]
GRFC[10]_TX_ON
ANT_SEL2_N_GPIO[11]
ANT_SEL1_N_GPIO[10]
ANT_SEL0_N_GPIO[9]
TX_VCO_0_EN_N_GPIO[8]
TX_VCO_1_EN_N_GPIO[7]
UHF_BAND_SEL_GPIO[6]
GSM_PA_BAND_GPIO[5]
GSM_PA_EN_GPIO[4]
UHF_VCO_0_EN_GPIO[3]
BT_CLK_GPIO[25]
BT_SBST_GPIO[24]
BT_SBCK_GPIO[23]
BT_SBDT_GPIO[22]
BT_TX_RN_N_GPIO[21]
BT_DATA_GPIO[20]
Figure. Schematic of RF Interface of MSM6250A
A19
PA_ON1
D5
H21
A5
TP201
N23
LCD_RESET_N
AC15
VGA_CAM_RESET_N
AF16
HOOK_SW_N
T14
EAR_SENSE_N
H9
D18
IrDA_SD
F8
M_CAM_PWDN
AB1
Y6
CAM_PWR_EN
L25
LCD_IF_MODE
C1
STEREO_DET_N
F19
LCD_BACK_EN
H18
VGA_CAM_PWDN
L14
H14
TP202
F18
TCXO_EN
B19
PA_ON0
A13
TX_QM
B13
TX_QP
A14
TX_IM
B14
TX_IP
I_OUT
U21
U23
V25
W26
Y25
RX_QM
Y26
RX_QP
V21
RX_IM
W21
RX_IP
A20
H17
H15
D16
TCK
F15
TMS
D15
TDI
F16
TDO
H16
RTCK
J25
SPK_AMP_EN
K23
LCD_LDO_EN
J26
HDET_EN
K19
SLIDE_DETECT_N
H12
RF_ON_TX_ON
B4
ANT_SEL2
T23
ANT_SEL1
R19
ANT_SEL0
D11
H10
F10
D9
A8
B8
G23
F23
E26
CAM_LED_EN
E25
G21
G_LED_EN
D26
R_LED_EN
- 41 -
3. TECHNICAL BRIEF
D200
ON_SW_N
RB521S-30
R213 1K
TX_AGC_ADJ
R214 2K
TRK_LO_ADJ
C243 C244
0.01u 33nF
Close to MSM
PA_R0
JTAG_TRST_N
JTAG_TCK
JTAG_TMS
JTAG_TDI
JTAG_TDO
JTAG_RTCK
GSM_TX_VCO_0_EN_N
GSM_TX_VCO_1_EN_N
UHF_BAND_SEL
GSM_PA_BAND
GSM_PA_EN
UHF_VCO_0_EN