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2.5V_A 2.5V_A 2.5V_A 2.5V_A
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Ethernet Interface Board 4/5
Locate these devices near
KSZ8721 power pins.
These Resistors are
1% / 2125.
VDDRCV is output of regurated 2.5V.
2.5V and 2.5V_P are distributed from 2.5V_A via FBs.
Left (view from outside)
Right (view from outside)
12
1 2
1 2
12
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
SHIELD
9
SHIELD
10
12
12
TX+
16
TX-
14
TD+
1
TDCT
2
CT1
15
TD-
3
RD+
6
RD-
8
RDCT
7
RX+
11
RX-
9
CT2
10
21
IO1
1
NC1
2
GND
3
IO2
4
NC2
5
IO3
6
NC3
7
VCC
8
IO4
9
NC4
10
12
21
12
12
12
12
12
1212
12
1 2
MDC
2
MDIO
1
CRS/RMII_BTB
22
COL/RMII
21
TXC/REFCLK
15
TXD0
17
TXD1
18
TXD2
19
TXD3
20
TXEN
16
TXER
14
RXC
10
RXD0/PHYAD4
6
RXD1/PHYAD3
5
RXD2/PHYAD2
4
RXD3/PHYAD1
3
RXER/ISO
11
RXDV/CRSDV/PCS_LPBK
9
TX+
41
TX-
40
RX+
33
RX-
32
LED0/TEST
26
FXSD/FXEN
34
PD
30
LED3/NWAYEN
29
LED2/DUPLEX
28
LED1/SPD100/nFEF
27
XI
46
XO
45
GND
39
VDDTX
42
GND
43
GND
44
VDDPLL
47
INT/PHYAD0
25
RST
48
VDDIO
7
VDDIO
24
GND
8
GND
12
GND
23
GND
35
VDDC
13
VDDRX
31
VDDRCV
38
GND
36
REXT
37
IO1
1
NC1
2
GND
3
IO2
4
NC2
5
IO3
6
NC3
7
VCC
8
IO4
9
NC4
10
12
12
12
12
12
12
12
1 2
1 2
12
12
R86
49.9
R7
470
R4
470
C46
0.1u
CN1
TM11R-5M2-88-LP
C39
0.1u
R88
49.9
L2
H1260
D3
(Green)
D4
MAX3208
C41
0.1u
D2
(Orange)
R89
49.9
D6
(DF2S5.6S)
C38
0.1u
C37
0.1u
C42
0.1u
R102
2.2k
C44
10p
FB3
BK1608
C45
0.1u
R87
33
U9
KSZ8721BL
D5
MAX3208
C53
10u/2125
R100
6.49k 1%
C40
10u/2125
C8
0.1u
R103
10k
X2
NX5032 25MHz 50ppm
R85
49.9
C52
10u/2125
R101
(1M)
FB2
BK1608
R93
33
C43
10p
D7
(DF2S5.6S)
VCC
2.5V_P
2.5V
2.5V_A
VCC
2.5V 2.5V_A 2.5V_P
VCC
VCC
VCC
P_LED1sh4
P_LED2sh4
PLD_OUT1 sh4
PLD_OUT2 sh4
MII_MDC sh2
MII_MDIO sh2
MII_TXCLK sh2
MII_TXD3 sh2
MII_TXD2 sh2
MII_TXD1 sh2
MII_TXD0 sh2
MII_TXER sh2
MII_TXEN sh2
MII_COL sh2
MII_CRS sh2
MII_RXCLK sh2
MII_RXD3 sh2
MII_RXD2 sh2
MII_RXD1 sh2
MII_RXD0 sh2
MII_RXER sh2
MII_RXDV sh2
RESET sh1,4