LG 77EG9700 Service Manual page 58

XTAL(24.75MHz)
R12307
1M
X12300
24.75MHz
X-TAL_1 GND_2
U14_XTAL_IN 1 4
GND_1 X-TAL_2
2 3
C12300
C12303 330
24pF
24pF R12343
50V
50V
JTAG for U14
+3.3V_NORMAL
P12300
12507WS-08L
JTAG_U14
JTAG_U14
C12301
0.1uF
1
16V
2 R12300 33
U14_TDI
JTAG_U14
3 R12301 33
U14_TMS
JTAG_U14
4 R12302 33
U14_TCLK
JTAG_U14
R12304 33
5
U14_TDO
JTAG_U14
R12303 33
6
U14_TRST_N
JTAG_U14
7
8
9
UART For U14
+3.3V_NORMAL
P12301
12507WS-04L
UART_U14
1
R12305
33
2
U14_UART_RX_1
UART_U14
3
R12306
33
4
U14_UART_TX_1
UART_U14
5
C12302
0.1uF
16V
SPI FLASH(4MByte)
MX25L3206EM2I-12G
R12309
10K
CS#
U14_SPI_CS_M
R12311 SO/SIO1
U14_SPI_MISO_M
33
R12308
WP#
0
U14_FLASH_WP
1/16W R12310
10K
5%
GND
OPT
Write Protection
- HIGH : Normal Operation
- LOW : Write Protection
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
HW RESET
SW12300
JTP-1127WEM
U14_HWRESET
U14_XTAL_OUT
+3.3V_NORMAL +3.3V_NORMAL
R12312 R12327
10K 10K
OPT OPT
U14_SMODE[0] U14_SMODE[1]
R12313 R12328
10K 10K
URSA9_CONNECT
SMODE[1:0]
- 00 : Normal Mode
- Other : Test Mode
Serial Flash Boot Test
GPIO[0]
+3.3V_NORMAL
R12344
U14_SPI_CS_M 10K
URSA7/URSA9P
U14_SPI_MOSI_M
R12345
U14_SPI_SCLK_M 10K
URSA9
U14_SPI_MISO_M
U14_SPI_DL_MODE
U14_FLASH_WP
URSA9
URSA7
+3.3V_NORMAL
IC12301
C12304
0.1uF
VCC
1 8
HOLD# R12316
2 7
3.3K
SCLK
3 6
U14_SPI_SCLK_M
SI/SIO0
4 5
U14_SPI_MOSI_M
IC12300
LG1614
AG25 AC28
HDMI_RX0-_U14_2 HDMI_RXA0N PORES_N
AH25
HDMI_RX0+_U14_2 HDMI_RXA0P
AG26 AB26 R12337 33
HDMI_RX1-_U14_2 HDMI_RXA1N SCL_M
AH26 AA28 R12338 33
HDMI_RX1+_U14_2
HDMI_RXA1P SCL_S
AG27 AB25 R12335 33
HDMI_RX2-_U14_2
HDMI_RXA2N SDA_M
R12336 33
AH27 AA27
HDMI_RX2+_U14_2 HDMI_RXA2P SDA_S
AG24
HDMI_CLK-_U14_2
HDMI_RXACN
AH24 P3
HDMI_CLK+_U14_2 HDMI_RXACP SMODE[0]
AF24 R3
HDMI_RXAHPD SMODE[1]
AD23
RXASCL_U14 HDMI_RXASCL
R12356 33
AE23 AD26
RXASDA_U14
HDMI_RXASDA SPI_CS_M R12357 33
AC25
SPI_DI_M
R12358 33
AF28 AD25
RP_HDMI_D0- HDMI_RXB0N
SPI_DO_M R12359 33
AE27 AC26
RP_HDMI_D0+ HDMI_RXB0P SPI_SCLK_M
R12331 33
AE28 AA26
RP_HDMI_D1- HDMI_RXB1N SPI_CS_S
R12332 33
AD27 AA25
RP_HDMI_D1+ HDMI_RXB1P SPI_DI_S
R12333 33
AD28 AB28
RP_HDMI_D2- HDMI_RXB2N SPI_DO_S
AC27 AB27 R12334 33
+3.3V_NORMAL
RP_HDMI_D2+ HDMI_RXB2P SPI_SCLK_S
AF27
HDMI_RXBCN
RP_HDMI_CK-
AG28 T1
RP_HDMI_CK+
HDMI_RXBCP TCK
R12317 AF26 U2
10K HDMI_RXBHPD TDI
AC24 T2
OPT
RXBSCL_U14 HDMI_RXBSCL TDO
AA24 U1
RXBSDA_U14
HDMI_RXBSDA TMS
R2
TRST_N
R12318
L3
10K
TMODE[0]
M3
OPT
TMODE[1]
T23 N3
URSA7/9_SET GPIO[0] TMODE[2]
T24 N2
FHD_D9_SET
GPIO[1] TMODE[3]
+3.3V_NORMAL
U23
H13_CONNECT GPIO[2]
U24 R1
GPIO[3] UART_RXD
V23 P2
R12319 U14_FLASH_WP GPIO[4] UART_TXD
10K R12350 33 V24
Vx1_LOCKn_V
GPIO[5]
OPT
R12351 33 W23 AD1
Vx1_LOCKn_O GPIO[6] XTALI
R12352 33 W24 AD2
GPIO[7] XTALO
+3.3V_NORMAL
R12320
100K
AF23
HDMI_5V_DETA
AB24
HDMI_5V_DETB
A3
LOCKN_D
C23
LOCKN_Q
L2
L_VS
M1
M0_SCLK
M2
M0_MOSI
N1
M1_SCLK
P1
GPIO[1] M1_MOSI
+3.3V_NORMAL
R12346
10K
U14_D9
FHD_D9_SET
URSA7/9_SET
R12347
10K
NOT_D9
GPIO[0] GPIO[1]
1920x1080@60p pull-down pull-down
2560x1080@60p pull-down pull-up
1920x1080@60p pull-up pull-down
2560x1080@60p pull-up pull-up
+3.3V_NORMAL
R12330
3.3K
OPT
U14_RESET_Switch
U14_HWRESET
R12360 33
U14_SPI_DL_MODE
U14_RESET_SOC A27
U14_RESET TXC4P/TX18P
A26
R12329 33
TXC4N/TX18N
B27
I2C_SCL2 TXC3P/TX19P
C12305 R12315 B28
TXC3N/TX19N
0.1uF 10K
B26
16V TXCCLKP/TX20P
I2C_SDA2
B25
TXCCLKN/TX20N
C26
TXC2P/TX21P
C25
U14_SMODE[0] TXC2N/TX21N
D26
U14_SMODE[1]
TXC1P/TX22P
D25
TXC1N/TX22N
E26
U14_SPI_CS_M TXC0P/TX23P
U14_SPI_CS_M
E25
U14_SPI_MISO_M TXC0N/TX23N
U14_SPI_MOSI_M
F27
U14_SPI_SCLK_M TXD4P/TX12P
F28
SOC_SPI1_CS
TXD4N/TX12N
F26
SOC_SPI1_MISO TXD3P/TX13P
F25
SOC_SPI1_MOSI
TXD3N/TX13N
G26
SOC_SPI1_SCLK
TXDCLKP/TX14P
G25
TXDCLKN/TX14N
H26
U14_TCLK TXD2P/TX15P
H25
U14_TDI TXD2N/TX15N
J26
U14_TDO TXD1P/TX16P
J25
U14_TMS TXD1N/TX16N
K27
U14_TRST_N TXD0P/TX17P
K28
TXD0N/TX17N
K26
TXA4P/TX6P
K25
TXA4N/TX6N
L26
TXA3P/TX7P
L25
TXA3N/TX7N
M26
U14_UART_RX_1
TXACLKP/TX8P
M25
U14_UART_TX_1
TXACLKN/TX8N
N26
TXA2P/TX9P
N25
U14_XTAL_IN TXA2N/TX9N
P27
U14_XTAL_OUT
TXA1P/TX10P
P28
TXA1N/TX10N
P26
TXA0P/TX11P
P25
TXA0N/TX11N
R26
TXB4P/TX0P
R25
TXB4N/TX0N
T26
TXB3P/TX1P
T25
Vx1_LOCKn_O TXB3N/TX1N
U26
Vx1_LOCKn_V
TXBCLKP/TX2P
U25
TXBCLKN/TX2N
V27
TXB2P/TX3P
V28
TXB2N/TX3N
V26
TXB1P/TX4P
V25
TXB1N/TX4N
W26
TXB0P/TX5P
W25
TXB0N/TX5N
IC12300
LG1614
A23
RXA0N TXA0N
B23
RXA0P TXA0P
D22
RXA1N TXA1N
C22
RXA1P TXA1P
D21
RXA2N TXA2N
C21
RXA2P TXA2P
D20
RXACLKN TXACLKN
C20
RXACLKP TXACLKP
D19
RXA3N TXA3N
C19
RXA3P TXA3P
A19
RXA4N TXA4N
B19
RXA4P TXA4P
D18
RXB0N TXB0N Tx_U14_0N
C18
RXB0P TXB0P Tx_U14_0P
D17
RXB1N TXB1N Tx_U14_1N
C17
RXB1P TXB1P Tx_U14_1P
D16
Tx_U14_2N
RXB2N TXB2N
C16
RXB2P TXB2P Tx_U14_2P
D15
RXBCLKN TXBCLKN
C15
RXBCLKP TXBCLKP
A15
RXB3N TXB3N
B15
RXB3P TXB3P
D14
Tx_U14_3N
RXB4N TXB4N
C14
RXB4P TXB4P Tx_U14_3P
D13
RXC0N TXC0N Tx_U14_4N
C13
RXC0P TXC0P Tx_U14_4P
D12
Tx_U14_5N
RXC1N TXC1N
C12
RXC1P TXC1P Tx_U14_5P
D11
Tx_U14_6N
RXC2N TXC2N
C11
RXC2P TXC2P Tx_U14_6P
A11
RXCCLKN TXCCLKN
B11
RXCCLKP TXCCLKP
D10
RXC3N TXC3N
C10
RXC3P TXC3P
D9
Tx_U14_7N
RXC4N TXC4N
C9
RXC4P TXC4P Tx_U14_7P
D8
RXD0N TXD0N
C8
RXD0P TXD0P
D7
RXD1N TXD1N
C7
RXD1P TXD1P
A7
RXD2N TXD2N
B7
RXD2P TXD2P
D6
RXDCLKN TXDCLKN
C6
RXDCLKP TXDCLKP
D5
RXD3N TXD3N
C5
RXD3P TXD3P
B4
RXD4N
TXD4N
A4
RXD4P TXD4P
A2
TXE0N Tx_U14_8N
B3
TXE0P Tx_U14_8P
B1
Tx_U14_9N
TXE1N
B2
TXE1P Tx_U14_9P
C4
Tx_U14_10N
TXE2N
C3
TXE2P Tx_U14_10P
D4
Tx_U14_11N
TXECLKN
D3
TXECLKP Tx_U14_11P
E4
TXE3N
E3
TXE3P
F4
TXE4N
F3
TXE4P
F1
TXF0N
F2
TXF0P
G4
TXF1N
G3
TXF1P
H4
TXF2N
H3
TXF2P
J4
TXFCLKN
J3
TXFCLKP
K4
TXF3N
K3
TXF3P
K1
TXF4N
K2
TXF4P
BSD-14Y-UD-123-HD
2013.12.17
U14
LGE Internal Use Only