LG -P940 Service Manual page 180

MHL LDO
have to check power on sequence
MHL_1V2
C1302
0.1u
MHL_3V3
HDMI signal level shift
HDMI_SCL
HDMI_SDA
HDMI_HPD
LGE Internal Use Only
U1301
1 4
VBAT
VOUT VDD
2 3
GND CE MHL_LDO_EN
C1303
100n
MHL_1.8V moved to TWL6030 PMIC AUX2
U1302
1 4
VBAT
VOUT VDD
2 3
GND CE MHL_LDO_EN
C1318
C1319
0.1u
100n
MUIC + MHL SWITCH
A1 C1
LS_HDMI_SCL
A1 B1
U1304
A2 B4
A2 GND
A3 B3
MHL_LDO_EN
A3 OE
MHL_1V8 MHL_3V3
HDMI TO MHL TX
have to verify circuit, omap OUTPUT Voltage level / MHL input voltage level check!!!
2.2u C1301
2.2u C1304
FB1303
120
FB1304
120
C1308 0.1u
C1310 0.1u
2.2u C1312
MHL_1V8
F7
LS_HDMI_HPD HPD
E1
LS_HDMI_SDA
DSDA
F4
LS_HDMI_SCL DSCL
F3
MHL_1V8 RPWR
G4
HDMI_D0+ RX0_P
G5
HDMI_D0- RX0_N
G2
HDMI_D1+ RX1_P U1303
G3
HDMI_D1- RX1_N
F1
HDMI_D2+ RX2_P
G1
HDMI_D2- RX2_N
G6
HDMI_CLK+ RXC_P
G7
HDMI_CLK- RXC_N
R1311
10K
1 12
USB_ID1
GND1 IDUSB
2 11
USB_DP D+ MHDI+ MHL_D
3 10
USB_DM MHL_DB
D- MHDI-
4 9
MUIC/MHL_SEL
PSO SEL2
U1305
- 180 -
FB1301
FB1302
120
120
LAYOUT: Place 100nF decoupling capacitors close to SiI9244 pins
C1305 0.1u
C1306 0.1u
C1307 2.2u
C1309 0.1u
C1311 0.1u
C1313 0.1u
C1314 4.7u
C1315 0.1u
C1316 0.1u
C1317 2.2u
R1301
1M
A7
CBUS_ID USB_ID2
B6
USB_ID
D7
RESET_N MHL_RESET_N
C7
INT MHL_INT
VSEL_1.8V
D6 R1304
CI2CA
10K
C3
WAKE_UP WAKEUP_MHL
A3
MHL_D
MHL_D
R1305 R1306
A4
1.5K 1.5K
MHL_DB MHL_DB
C1
CSCL
D1
CSDA
Add R2212, R2213 (RevC)
Change I2C2 --> MHL_I2C(RevC)
C1320
100n
Copyright © 2011 LG Electronics. Inc. All right reserved.
7. CIRCUIT DIAGRAM
MHL_SCL
MHL_SDA
Only for training and service purposes