Schematics

1
1
2
2
3
3
4
4
D D
C C
B B
A A
Title
Number RevisionSize
A4
Date: 2014/4/11 Sheet of
File: E:\PCB\..\LAN8720 ETH Board.SchDoc Drawn By:
VDD2A
1
LED2/nINTSEL
2
LED1/REGOFF
3
XTAL2
4
XTAL1/CLKIN
5
VDDCR
6
RXD1/MODE1
7
RXD0/MODE0
8
VDDIO
9
RXER/PHYAD0
10
CRS_DV/MODE2
11
MDIO
12
MDC
13
nINT/REFCLKO
14
nRST
15
TXEN
16
TXD0
17
TXD1
18
VDD1A
19
TXN
20
TXP
21
RXN
22
RXP
23
RBIAS
24
U1
LAN8720A/LAN8720Ai
8
8
G+
9
TD+
1
TD-
2
CTTD
4
CTRD
5
RD+
3
RD-
6
7
7
G-
10
Y-
11
Y+
12
13
13
14
14
P1
net_port
GND
1
3
5
7
9
11
13
2
4
6
8
10
12
14
P2
Header 7x2
R14
33R
NC
1
GND
2
Output
3
VCC
4
OSC1
50MHz
GND
VCC
GNDGND
12.1K
R15
GND
470pF
C2
105
C3
GND
104
C4
VCC
VCC
FB
L1
104
C5
104
C6
AVDD
GND
AVDD
1.5K
R13
MDC
CRS_DV
RXD1
TXD0
MDIO
OSCIN
RXD0
TX_EN
TXD1
RXER
CRS_DV
TX_EN
nRST
MDC
TXD1
TXD0
RXD1 RXD0
TX_EN
MDC
CRS_DV
OSCIN
MDIO
MDIO
332R
R6
332R
R8
LED1
LED2
LED1
LED2
4.7K
R16
104
C7
GND
VCC
VCC
nRST
0.022uF
C1
GND
AVDD
33RR11 REFCLKO
CLK50
33RR12
R_RXCLK
R_RXCLK
10RR5
10RR7
10RR9
10RR10
49.9 Ohms 1.0%
R1
49.9 Ohms 1.0%
R2
49.9 Ohms 1.0%
R3
49.9 Ohms 1.0%
R4
AVDD
TXD1
TXD0
RXD1
RXD0
0R
R17
GND_J48
VDDCR GND_J48 GND_J48
AVDD
AVDD
TD_P
TD_N
RD_N
RD_P
VCC
aveshare
W
PIC101
PIC102
COC1
PIC201
PIC202
COC2
PIC301
PIC302
COC3
PIC401
PIC402
COC4
PIC501
PIC502
COC5
PIC601
PIC602
COC6
PIC701
PIC702
COC7
PIL101 PIL102
COL1
COlogo1
PIluosihole S100
COluosihole S1
PIluosihole S200
COluosihole S2
PIOSC101 PIOSC102
PIOSC103 PIOSC104
COOSC1
PIP101
PIP102
PIP103
PIP104
PIP105
PIP106
PIP107
PIP108
PIP109
PIP1010
PIP1011
PIP1012
PIP1013
PIP1014
COP1
PIP201 PIP202
PIP203 PIP204
PIP205 PIP206
PIP207 PIP208
PIP209 PIP2010
PIP2011 PIP2012
PIP2013 PIP2014
COP2
PIP301
COP3
PIR101
PIR102
COR1
PIR201
PIR202
COR2
PIR301
PIR302
COR3
PIR401
PIR402
COR4
PIR501PIR502
COR5
PIR601 PIR602
COR6
PIR701PIR702
COR7
PIR801 PIR802
COR8
PIR901PIR902
COR9
PIR1001PIR1002
COR10
PIR1101 PIR1102
COR11
PIR1201 PIR1202
COR12
PIR1301 PIR1302
COR13
PIR1401PIR1402
COR14
PIR1501
PIR1502
COR15
PIR1601
PIR1602
COR16
PIR1701
PIR1702
COR17
PIU101
PIU102
PIU103
PIU104
PIU105 PIU106
PIU107
PIU108
PIU109
PIU1010
PIU1011
PIU1012
PIU1013
PIU1014
PIU1015
PIU1016
PIU1017
PIU1018
PIU1019
PIU1020
PIU1021
PIU1022
PIU1023
PIU1024
COU1
PIC102
PIC502 PIC602
PIL101
PIP104
PIP105
PIP109
PIP1012
PIR102 PIR202 PIR302 PIR402
PIU101
PIU1019
NLAVDD
PIOSC103
PIR1202
PIR1402
NLCLK50
PIP207
PIR1002
NLCRS0DV
PIC101
PIC201 PIC301
PIC401
PIC501 PIC601
PIC701
PIOSC102
PIP203 PIP204
PIR1502
PIR1702
PIU100
PIluosihole S100 PIluosihole S200
PIP107
PIP108
PIP1013
PIP1014
PIR1701
NLGND0J48
PIR602
PIU103
NLLED1
PIR802
PIU102
NLLED2
PIP205
PIU1013
NLMDC
PIP206
PIR1301 PIU1012
NLMDIO
PIU104
PIR1501
PIU1024
PIR1001 PIU1011
PIR701 PIU108
PIR501 PIU107
PIP2013
PIP1011 PIR801
PIP1010 PIR601
PIOSC101
PIC702
PIR1601
PIU1015
NLnRST
PIR1401 PIU105
NLOSCIN
PIP208
PIR1101
PIR1201
NLR0RXCLK
PIP106
PIR101
PIU1022
NLRD0N
PIP103
PIR201
PIU1023
NLRD0P
PIR1102 PIU1014
NLREFCLKO
PIP2010
PIR702
NLRXD0
PIP209
PIR502
NLRXD1
PIR901 PIU1010
NLRXER
PIP102
PIR301
PIU1020
NLTD0N
PIP101
PIR401
PIU1021
NLTD0P
PIP2012
PIU1016
NLTX0EN
PIP2011
PIU1017
NLTXD0
PIP2014
PIU1018
NLTXD1
PIC402
PIL102
PIOSC104
PIP201 PIP202
PIR902
PIR1302
PIR1602
PIU109
PIC202 PIC302
PIP301PIU106
NLVDDCR