LG 79UF9500 - Page 47

USB DOWN STREAMUSB DOWN STREAM
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.
USB3_HUB
2014-12-10
43
LM15U
R4306
14K
1%
R4303
0
USB_DM/DP_0ohm
D4301
5V
C4313
10uF
10V
USB_DP2
+5V_NORMAL
R4301
0
USB_DM/DP_0ohm
C4323
22uF
10V
USB_DP1
C4312
22uF
10V
+5V_USB_3
USB_DM1
R4305
4.7K
R4300
0
USB_DM/DP_0ohm
USB_CTL3
USB_DM2
SSUSB_TXN
USB_DM3
+5V_USB_3
+3.3V_NORMAL
C4311
22uF
10V
SSUSB_RXN
C4310
10uF
10V
D4302
RCLAMP0502BA
ZD4302
5V
C4300
0.1uF
16V
IC4300
BD2242G
3
EN
2
GND
4
OC
1
VIN
6
VOUT
5
ILIM
SSUSB_TXP
C4322
10uF
10V
D4300 RCLAMP0502BA
+5V_USB_1
D4303
5V
R4304
10K
/USB_OCD3
R4302
0
USB_DM/DP_0ohm
SSUSB_RXP
USB_DP3
+5V_USB_2
JK4302
3AU04S-305-ZC-(LG)
1234
5
JK4300
3AU04S-305-ZC-(LG)
1234
5
D4304
6.5VTO11.0V
RCLAMP0544T.TCT
USB3.0_TVS
1 8
2 7
3 6
4 5
9
D4305
6.5VTO11.0V
RCLAMP0544T.TCT
USB3.0_TVS
1 8
2 7
3 6
4 5
9
JK4301
SJ113262
1
VBUS
2
D-
3
D+
4
GND
5
STDA_SSRX-
6
STDA_SSRX+
7
GND_DRAIN
8
STDA_SSTX-
9
STDA_SSTX+
10
SHIELD
R4300-*1
2.2
USB_DM/DP_2.2ohm
R4301-*1
2.2
USB_DM/DP_2.2ohm
R4302-*1
2.2
USB_DM/DP_2.2ohm
R4303-*1
2.2
USB_DM/DP_2.2ohm
USB1->USB3
MAX 1.0A
OCP USB3->USB1
+5V_USB FOR USB3->USB1
USB3->USB1 (3.0)
USB2
MAX 1.2A
MAX 1.0A
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only