THERMAL
THERMAL
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.
C8426
0.1uF
16V
C8411
0.1uF
ETNHUB_AVDD33
C8430
2.2uF
25V
C8407
0.1uF
C8429
0.1uF
16V
R8407
10K
C8435
0.1uF
16V
L8406
BLM18PG121SN1D
C8422
0.1uF
16V
C8419
0.1uF
16V
C8406
0.1uF
L8403
BLM18PG121SN1D
C8400
2.2uF
25V
IC8400
MP20045DQ-LF-Z
3
VOUT_1
2
VIN_2
4
VOUT_2
1
VIN_1
5
FB
6
GND
7
PG
8
EN
9
EP[GND]
C8424
0.1uF
ETNHUB_AVDD33
ETNHUB_DVDD33
ETNHUB_AVDD33
C8410
0.1uF
ETNHUB_DVDD33
ETNHUB_AVDD18
ETNHUB_AVDD18
ETNHUB_DVDD18
ETNHUB_DVDD18
C8418
0.1uF
R8408
100K
C8405
0.1uF
16V
L8407
BLM18PG121SN1D
ETNHUB_DVDD33
C8438
22uF
10V
OPT
C8425
22uF
10V
R8416
49.9
ETNHUB_EPHY_RXIN2
C8442
0.1uF
ETNHUB_EPHY_TXON2
C8445
0.1uF
ETNHUB_EPHY_RXIP2
TR0N
C8447
0.1uF
C8443
0.1uF
C8446
0.1uF
R8417
49.9
ETNHUB_AVDD18
C8444
0.1uF
R8419
49.9
TR0P
TR1N
TR1P
R8418
49.9
ETNHUB_EPHY_TXOP2
R
8
4
5
8
1
.
5
K
R
8
4
6
5
1
.
5
K
ETNHUB_EPHY_TXOP1
R8423
270
1%
ETNHUB_INT
ETNHUB_DVDD18
ETNHUB_DVDD33
R8434
33
ETNHUB_EPHY_TXOP2
ETNHUB_EPHY_TXON2
ETNHUB_EPHY_RXIN1
R8436
1K
R8435
33
X8400
25MHz
ETNHUB_AVDD33
LAN_ACT2
R8424
1.69K
1%
LAN_ACT0
LAN_ACT3
ETNHUB_EPHY_RXIP1
ETNHUB_EPHY_RXIN2
ETNHUB_AVDD18
ETNHUB_EPHY_TXON1
ETNHUB_EPHY_RXIP2
ETNHUB_ENDEFER
GYSPD
C8440
27pF
50V
C8441
27pF
50V
R8440
100
Realtek WOL
L8408-*1
UBW2012-121F
SHENCHEN_NEW
L8401
BLM18PG121SN1D
R8427
Realtek WOL
22
IC8401
RTL8305N_REALTEK
1
AVDD18_1
2
TXON[1]
3
TXOP[1]
4
RXIP[1]
5
RXIN[1]
6
AVDD18_2
7
RXIN[2]
8
RXIP[2]
9
TXOP[2]
10
TXON[2]
11
TXON[3]
12
TXOP[3]
13
RXIP[3]
14
RXIN[3]
15
TXOP[4]
16
TXON[4]
17
AVDD18_3
18
DVDD18_1
19
RXIP[4]
20
RXIN[4]
21
AVDD18_4
22
DVDD18_2
23
DVDD18_3
24
LDIND/DISLD
25
ENEEPROM
26
SCL_MDC
27
SDA_MDIO
28
DVDD33
29
LED_ACT[4]
30
LED_ACT[3]/EN48PASS1
31
DVDD18_4
32
RESET
33
P4FLCTRL/CPU_INTT
34
LED_ACT[2]/P4ANEG
35
LED_ACT[1]/GYSPD100
36
LED_ACT[0]/BCINDROP
37
OSCI
38
AVDD33
39
AVDD18_5
40
X1
41
X2
42
VCTRL
43
IBREF
44
AVDD18_6
45
RXIN[0]
46
RXIP[0]
47
TXOP[0]
48
TXON[0]
49
[EP]GND
LAN_ACT3
R8450
1K
OPT
R8451
1K
OPT
R8454
1K
OPT
R8448
1K
OPT
LAN_ACT2
R8444
1K
OPT
R8446
1K
OPT
/ETHERNET_RESET
GYSPD
LAN_ACT0
ETNHUB_ENDEFER
L8408
MAG_NEW
EPHY_MDIO
EPHY_MDC
EPHY_MDIO
EPHY_MDC
+3.5V_ST_LAN
/RST_PHY
R8449
22
RST_PHY_CPU
/ETHERNET_RESET
R8452
22
RST_PHY_MICOM
/RST_PHY
R8467
22
RST_PHY_CPU
R8466
22
RST_PHY_MICOM
R8409
10K 1%
R8406
2K
1%
Vout=1.5*(1+R1/R2)
R1
R2
Vout
Place close to chip
PHY TO RTL matching
Place to center position between two chips
Differential 100 ohm
No Via
Close to
1.96K
Place Close To RTL8305N
LAN1
TO PHY Chip
Place Close To RTL8305N
Ethernet HUB(RTL8305N-CG)
Ethernet Power
All Strapping Pins are internal pull-up
LED_ACT[2]/P4ANEG : Auto-negotiation Enable/Disable
STRAPPING PIN CONFIG
2014.07.14
ETHERNET HUB
25
18
LY770M-UA
Copyright © 2014 LG Electronics Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only
Содержание 42LY770M
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