Block Diagram - LG GT350 Service Manual

III. Technical brief
III-1 Baseband circuit
3.1 GT350 Functional Block diagram
The functional component arrangement is mentioned below diagram.

6. BLOCK DIAGRAM

GT350 BLOCK DIAGRAM
ANT
FEM
DCS/PCS
LMSP4DNA
GSM850/900
FE1 FE2
RF Transceiver(PMB6272)
TRANSCEIVER
PMB6272
BT ANT
BPF
FM ANT
VBAT
PMB6821(PM IC)
SD1 (1.35V) VAUX (2.9V)
SD2(1.8V) VIO(2.62V)
SU1(5.6..25V) VSIM(2.9V)
VPLL(1.35V) VMME (2.9V)
VRTC(2.0V) VUMTS(2.85V)
VAFC (2.65V) VUSB(3.1V)
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Only for training and service purposes
PAM(SKY77344) BB IC(PMB8877)
PA_LEVEL PA_LEVEL
Match Match
TXON_PA TXON_PA
Controller PA_BAND PA_BAND
PA_MODE PA_MODE
Match Match
I/I_/Q/Q_
/
RF_EN
RF_CLK
RF_DA
26M_MCLK
26M_Crystal
BT_CLK
UART
USIF2
/
BT/FM IC
I2S
(BCM20780)
I2S1
/
FM RADIO
32kHz
VBAT
VAUDIOa(2.5V)
VAUDIOb(2.5V) Power_KEY
VRF1(2.85V)
I2C1
I2C1
/
VRF2(1.53V)
2V11_RTC
VRF3(2.70V)
2V11_RTC
VVIB(2.8V)
B/UP BAT.
Figure 1 GT350 Functional block diagram
13/115
Memory
ADD(0:29)
(2G NAND +
/
1G DDR SDRAM)
DATA(0:15)
/
I2C1
Touch Sensor IC
I2C1 /
KEY_I2C
KEY Encoder
GPIO /
KEY_EN KEY Back Light
GPIO
VIB_EN
GPIO
Haptic Driver
VIB_PWM
GPIO
SIM Socket
SIM I/F
SIM I/F
MMC I/F
-SD
MMCI1 /
CHG_EN
Charging IC
T_IN1
I2C1
MUIC
I2C1
I2C2
I2C2
/
CIF
2M CAM
CIF
/
SET/EN
GPIO
LCD, 3.0"
DIF
DIF
/
262K TFT WQVGA
AUIDO AMP
INM-
EPN11
INM+
EPP11
INL
EPPA11
INR
EPPA21
I2C2 I2C
I2C2 / /
INL/R
FM RADIO
VMICP/N
MAIN MIC
MIC1(P/N)
HEADSET MIC
MIC2(P/N)
- 117 -
6. BLOCK DIAGRAM
LGE Internal Use Only
Touch Window
COL
KEY PAD
ROW
Vibrator
FM_ANT
Battery
VBUS_VCHG
MUIC_DP/DM
MUIC_ID
UART
USB
Charge Pump
(LED CTRL : 6 ea)
Headset Reciever(L/R)
Ear-jack
MAIN SPEAKER
OUT-
OUT+
LGE Property
LGE Internal Use Only