LG 55LV555H Service Manual page 34

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+3.5V_ST
Q1300
L1302
AO3407A
BLM18PG121SN1D
R1305
C1307
2.2K
C1341
0 . 1 u F G
OPT OPT
0 . 1 u F
16V C1342
16V
22uF
R1306
1K
C
R1375
Q1301 B 10K
HUB_POWER
2SC3052
5:AG17
E
A3.3_ETHUB
IC1301
AP1117E18G-13
IN ADJ/GND
3 1
A1.8_ETHUB
2
C1300
2 . 2 u F
OUT L1305 L1306
10V
BLM18PG121SN1D
BLM18PG121SN1D
C1328 C1343
0 . 1 u F
10uF
6.3V 16V
OPT
A3.3_ETHUB
D3.3_ETHUB
OPT
OPT
C1301 C1304
C1312 C1319 C1324 C1327
22uF 0 . 1 u F
22uF 0 . 1 u F 0 . 1 u F
0 . 1 u F
6.3V 6.3V
A1.8_ETHUB
OPT OPT OPT OPT
OPT
C1303 C1306 C1318 C1321 C1325 C1331
C1311
22uF 0 . 1 u F 0 . 1 u F 0 . 1 u F 0 . 1 u F 0 . 1 u F 0 . 1 u F
6.3V
+A_2.5V
D1.8_ETHUB
L1304
OPT OPT OPT
C1302 C1305 C1317 BLM18PG121SN1D
C1310 C1320
22uF 0 . 1 u F 0 . 1 u F 0 . 1 u F 0 . 1 u F
6.3V
C1329
0 . 1 u F
16V
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
A3.3_ETHUB
D3.3_ETHUB
A3.3_ETHUB
R1314 NFM18PS105R0J
0 C1340
6.3V
C1326 C1330 C1334
0 . 1 u F
22uF 22uF OUT IN
16V
6.3V 6.3V
GND
OPT OPT
P l a c e C l o s e T o R T L 8 3 0 6
D1.8_ETHUB
P l a c e C l o s e T o R T L 8 3 0 6
A1.8_ETHUB
BCM TO RTL matching
D2.5V_ETHUB
EPHY_RDP
1 0 : P 1 2 C1313
R1300
4 9 . 9 0 . 1 u F
1%
C1309
0 . 1 u F
OPT OPT
C1332 C1336 EPHY_RDN
0 . 1 u F 0 . 1 u F 1 0 : P 1 2
C1315
R1302
0 . 1 u F
4 9 . 9
1%
D2.5V_ETHUB
C1308
0 . 1 u F
OPT
C1333 C1337
0 . 1 u F 22uF
16V
6.3V
P l a c e c l o s e t o c h i p
P l a c e t o c e n t e r p o s i t i o n b e t w e e n t w o c h i p s
D3.3_ETHUB
IC1300
RTL8306G
R1325
1K
A1.8_ETHUB
EPHY_TXOP3
W14
R1310
4 9 . 9
1%
C1322
0 . 1 u F
EPHY_TXON3
W14
EPHY_RXIP3
X14
R1312
4 9 . 9
1%
C1323
0 . 1 u F
EPHY_RXIN3
X14
P l a c e c l o s e t o c h i p
D1.8_ETHUB
P4MODE0
AM14
P4MODE1 AM15
DISDUALMII AM15
R1377 22
ETHUB_RESET 5:AG17
D i f f e r e n t i a l 1 0 0 o h m
No Via
C l o s e t o
LV555H-UA
ETHERNET HUB
STRAPPING PIN CONFIG
R1356
0
P21 14:AG5
GYSPD LAN_ACT1
R1357
0
P21 GXFULL LAN_LINK1 14:AG6
P H Y 2 P R X D V : B r o a d c a s t s t r o m c o n t r o l e n a b l e / d i s a b l e
PHY2PRXD3 : Backpressure enable/disable
ENDEFER : Defer enable/disable
EN_AUTOXOVER : Auto cross over enable/disable
R1347 1K
R1348 1K
W27 PHY2PTXEN
CONFIG FOR MAC5
R1353
470
AD18 DISDUALMII
R1350
470
OPT
P4MODE1
AD18
R1354
470
AD19 P4MODE0
R1351
1K
T26 GXMODE
R1352
1K
OPT
S26 DUP3_GYMODE
D3.3_ETHUB
R1358 R1360
1K 1K
2 0 1 0 . 1 2 . 1 0
13
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