6. BLOCK DIAGRAM
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Only for training and service purposes
LGE Internal Use Only
LTE Band 20
RF Block
MIMO ANT
FM300 Main Board
WiFi Chip ANT
(MIMO Supports)
Duplexer
Transformer
PAM
Diversity
Antenna
SAW
R
R
FD
1_
IN
N
R
R
FD
1_
IN
P
Current
Monitor
Serial
Flash
Memory
DP0 / DM0
DP1 / DM1
VDD_3.7
GPIO1
Ethernet LED [GREEN]
RF Switch
RF Switch
BPF
BPF
G
0
G
1
G
0
G
1
USB1_SELECT
LNA
SAW
PAM
RRFM1_INN
RRFM1_INP
N
P
Voltage
Detector
AFE_HKADC_IN3
RJ-45
TRANS
TDP1
TDN1
USB A
CON
GPIO15[NP_USB1_SELECT]
USB LED [GREEN]
GPIO8
GPIO1
VDD_3.3
SIM
SIM_PWR
TX
G
TX
G
R
XG
R
XG
USB20PHY
DPDT1
tGwjp
l
zG
BCM5358U
L2000
Transformer
TRF1_OUTP
TRF1_OUTN
AFC VOUT
DDR ADDR
CON
FORMER
RDN1
RDP1
GPIO7/8/14
VDD_3.7
LQI LED [R,G,B]
L/T
Crystal
20MHz
USB clk
Reset Switch
iG
I2
C
AFC_VOUT
REF_CLK_IN
TCXO
I_REF_CLK
DDR SDRAM
(256Mb, 133MHz)
DDR_ADDR
DDR_DATA
Serial Flash
Memory (128Mb)
SFLASH
EN
GPIO
6
GPIO5
POWER LED [WHITE]
GPIO
7
48MHz
RTC clk
32KHz
PWR LED
EXT_POR_L
DCDC_3.
3V
VDD_3.3V
LP8725
(PMIC)
LDO
(TX PLL)
DCDC_
1.2
DCDC_
1.8
LDO
(RX PLL)
LDO(HKP)
LDO
(BB PLL)
RF_HKP_EN
RXPLL_PWR_EN
TXPLL_PWR_EN
NP_EN & LTE_EN
BUCK
VDD_1.2V
VCNTL
VDD_2.5V
LDO(L/T)
LT
_E
VDD_2.6V_LT
USB Mini B
CON2
UART Interface
DPDT2
DPDT3
UART_SEL
Power Button
DC Jack
(12V Adaptor)
USB Mini B
CON1
(BB PLL)
DCDC_3.
7V
VDD_3.7V
(12V Adaptor)
FM300 Sub Board
6.Block diagram