![ST SPC58NHADPT176S User Manual Download Page 30](http://html1.mh-extra.com/html/st/spc58nhadpt176s/spc58nhadpt176s_user-manual_1355950030.webp)
Figure 15.
Ethernet interface
Differential
Pairs
Differential
Pair
Differential
Pair
Differential
Pair
Differential
Pair
RXD0
RXD1
RXD2
RXD3
LEGEND
50
OHM SAME LENGHT TRACE
50 OHM TRACE
NORMAL TRACE
AS SHORT AS POSSIBLE TRACE
PIN1 PIN12 PIN47
PIN16 PIN34
PIN40
PIN4 PIN9
PIN44
PIN14 PIN18 PIN23 PIN26 PIN30 PIN39
Supply Filters
ESD Protection
se si disabilita il LDO interno,
sostituire la 0R con ferrite
BLM21PG221SN1D
Consider that all pins connected
statically to this device will not
available on the motherboard
connectors
close the Eth
tranceiver
10 K
1 K
1 K
1 K
RX_DV
RX_CLK
LED2
LED1
(strapping pins)
(strapping pins)
Nel layout fare
area per
dissipare almeno
1x1 inch
1 K
1 K
1 K
1 K
TXD0
TXD1
TXD2
TXD3
GTX_CLK
close the Eth
tranceiver
close the Eth
tranceiver
MDC
MDIO
close the Eth
tranceiver
INT_N
TXRXM_A
TXRXP _A
TXRXM_B
TXRXP _B
TXRXM_C
TXRXP _C
TXRXP _D
TXRXM_D
X
I
X
O
XO
L
DO
_
O
XI
INT_N
LED1
LED2
LED2
LED1
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND_ETH GND_ETH
GND
GND_ETH
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
TXRXP _A
TXRXP _A
TXRXM_A
TXRXP _B
TXRXM_B
TXRXP _C
TXRXM_C
TXRXP _D
TXRXM_D
TXRXM_A
TXRXP _B
TXRXM_B
TXRXP _C
TXRXM_C
TXRXP _D
TXRXM_D
DVDDL
AVDDL
AVDDL_P LL
TRCT1
TRCT2
TRCT3
TRCT4
TXRXM_B
TXRXP _B
TXRXM_A
TXRXP _A
TXRXP _A
TXRXM_B
TXRXP _B
TXRXM_A
TXRXM_D
TXRXP _D
TXRXM_C
TXRXP _C
TXRXM_D
TXRXP _D
TXRXM_C
TXRXP _C
AVDDH
DVDDH
LD_GREEN
LD_GREEN
LD_YELLOW
LD_YELLOW
AVDDH
3.3V_S R
DVDDH
3.3V_S R
AVDDL
AVDDL_P LL
1.2V_ETH
DVDDL
1.2V_S R
DVDDH
P H1
P ORS T
DVDDH
P A13
DVDDH
P A0
P H3
P E11
P H9
P H8
P H7
P H10
P H0
P A10
P A11
P H2
P E10
P G15
P H8
P H9
P H7
P H10
TRCT1
TRCT2
TRCT3
TRCT4
DVDDH
DVDDH
DVDDH
DVDDH
P E11
P H3
AVDDH
1.2V_ETH
1.2V_ETH
1.2V_ETH
AVDDH
AVDDH
DVDDH
DVDDH
DVDDH
DVDDH
R65
10K
TP 13
R50
10K
C109 22pF
R72
DNM
C84
47uF
10V
1206
R66
DNM
C89
100nF
50V
C99
100nF
50V
C101 22pF
R52
10K
C95
100nF
50V
R58
DNM
Q2
FDT434P
U10
HS P 061-4M10Y
I/0 1
1
I/0 2
2
GND
3
I/0 3
4
I/0 4
5
NC1
6
NC2
7
GND
8
NC3
9
NC4
10
C102
47uF
10V
1206
R69
10K
L6
TP 11
L7
R57
DNM
R49
DNM
TP 7
C92
100nF
50V
R71
DNM
TP 27
L5
R56
1K
C103
100nF
50V
C105
100nF
50V
TP 8
R74 180R
TP 10
R59
0R
C93
10nF
50V
C90
100nF
50V
R55
DNM
C85
100nF
50V
C96
100nF
50V
Y3
25MHZ
1
1
2
2
3
3
4
4
R54
0R
C110
100nF
50V
TP 6
TP 9
C106
100nF
50V
C107
100nF
50V
R62
0R
C111
100nF
50V
L8
C100
10nF
50V
C108
100nF
50V
R73 180R
C97
100nF
50V
R61
10K
R51
DNM
C86
100nF
50V
R53
10K
R68
12K1
+
C91
47uF
C104
100nF
50V
TP 12
R64
4K7
R63
4K7
U19
J K0-0136NL
TRD1+
11
TRCT1
12
TRD1-
10
TRD2+
4
TRCT2
6
TRD2-
5
TRD3+
3
TRCT3
1
TRD3-
2
TRD4+
8
TRCT4
7
TRD4-
9
LD_YELLOW_C
16
LD_YELLOW_A
15
LD_GREEN_C
13
LD_GREEN_A
14
S
H
1
2
0
S
H
2
2
1
U9
HS P 061-4M10Y
I/0 1
1
I/0 2
2
GND
3
I/0 3
4
I/0 4
5
NC1
6
NC2
7
GND
8
NC3
9
NC4
10
FBEAD1
C113
100nF
50V
C98
47uF
10V
1206
C87
100nF
50V
R67
DNM
C88
47uF
10V
1206
R60
10K
CF1100nF
50V
C94
47uF
10V
1206
R70
10K
C112
100nF
50V
KSZ9031RNX
48-pin QFN
Pa ddle Ground
(bottom of chip)
U11
KS Z9031RNXIA
N
C
1
3
L
E
D
2
1
5
D
V
D
D
H
1
6
L
E
D
1
/
P
M
E
_
N
1
1
7
D
V
D
D
L
1
4
T
X
D
0
1
9
T
X
D
1
2
0
T
X
D
2
2
1
T
X
D
3
2
2
D
V
D
D
L
1
8
D
V
D
D
L
2
3
G
T
X
_
C
L
K
2
4
TX_EN
25
DVDDL
26
RXD3
27
VSS
29
DVDDL
30
RXD1
31
RXD0
32
RX_DV
33
DVDDH
34
RX_CLK
35
MDC
36
M
D
IO
3
7
IN
T
_
N
/
P
M
E
_
N
2
3
8
D
V
D
D
L
3
9
D
V
D
D
H
4
0
C
L
K
1
2
5
_
N
D
O
4
1
R
E
S
E
T
_
N
4
2
L
D
O
_
O
4
3
X
O
4
5
X
I
4
6
N
C
4
7
IS
E
T
4
8
AVDDH
1
TXRXP_A
2
TXRXM_A
3
TXRXP_B
5
TXRXM_B
6
TXRXP_C
7
TXRXM_C
8
TXRXP_D
10
TXRXM_D
11
AVDDH
12
RXD2
28
A
V
D
D
L
_
P
L
L
4
4
P
_
G
N
D
4
9
AVDDL
4
AVDDL
9
UM2731
-
Rev 1
page 30
/37
UM2731
Schematic