Figure 15. Ethernet Interface - STMicroelectronics SPC58NHADPT302S User Manual

DVDDH DVDDH DVDDH DVDDH
R50 R51 R52 R53
10K DNM 10K 10K
10K
LED2 LED1
PE11 PH3
AVDDH
R55 R56 R57 R58
DNM 1K DNM DNM
1K 1K 1K
GND GND GND GND
RX_DV RX_CLK LED2 LED1
GND
(strapping pins)
(strapping pins)
DVDDH DVDDH
C101 22pF
Y3
1 4
R60 R61
1 4
10K 10K
25MHZ
2 3
GND
2 3
PH10 PH9 C109 22pF
R66 R67
DNM DNM
1K 1K
GND
GND GND
RXD0 RXD1
R68
AVDDH AVDDL_PLL GND
12K1
DVDDH DVDDH
R69 R70
10K 10K
PH8 PH7
R71 R72 AVDDL
DNM DNM
1K 1K
GND GND
RXD2 RXD3
1
AVDDH
TXRXP_A 2
TXRXP_A
TXRXP_A
TXRXM_A 3
TXRXM_A
TXRXM_A
4
AVDDL
TXRXP_B 5
TXRXP_B
TXRXP_B
TXRXM_B 6
TXRXM_B
Differential TXRXM_B
TXRXP_C 7
TXRXP_C
Pairs TXRXP_C
TXRXM_C 8
TXRXM_C
TXRXM_C
9
AVDDL
TXRXP_D 10
TXRXP_D
TXRXP_D
TXRXM_D 11
TXRXM_D
TXRXM_D
12
AVDDH
U11
KSZ9031RNXIA
GND
LEGEND
NORMAL TRACE
50 Ω TRACE
50 Ω SAME LENGHT TRACE
AS SHORT AS POSSIBLE TRACE
Figure 15. Ethernet interface
Supply filters
R49
1.2V_SR
3.3V_SR
DNM
TP27
R59
Q2
FDT434P
1.2V_ETH
0R
+ C91 C92 C93
3.3V_SR
47uF 100nF 10nF
50V 50V
GND GND
PORST DVDDH DVDDH DVDDH
XO
R62 R63 R64 R65
4K7 4K7
0R 10K
GND
PH1
XI
TP11
INT_N close the Eth
INT_N
tranceiver
PA13
TP13 DVDDL DVDDH
MDIO
Consider that all pins connected
statically to this device will not
available on the motherboard
connectors
close the Eth
tranceiver
TP12
MDC
36
PA0
MDC
35
KSZ9031RNX
PH3
RX_CLK
34
DVDDH
33
48-pin QFN PE11
RX_DV
32
PH10
RXD0
31
PH9
RXD1
30
DVDDL
29
Paddle Ground VSS
28
PH8
RXD2
27
PH7
RXD3
(bottom of chip) 26
DVDDL
25
PH0
TX_EN
PG15
GTX_CLK
TP10
close the Eth
tranceiver
PA10
PA11
PH2
PE10
close the Eth
tranceiver
TP6 TP7 TP8 TP9
TXD0 TXD1 TXD2 TXD3 R73 180R
LED1
LD_GREEN
R74 180R
LED2
LD_YELLOW
se si disabilita il LDO interno,
sostituire la 0R con ferrite
BLM21PG221SN1D
L5
R54
PIN1 PIN12 PIN47
AVDDH 1.2V_ETH
C84 C85 C86 C87 C88
0R
47uF 100nF 100nF 100nF 47uF
10V 50V 50V 50V 10V
1206 1206
GND GND GND GND GND
L6 L7
PIN16 PIN34 PIN40
DVDDH 1.2V_ETH
C94 C95 C96 C97 C98
47uF 100nF 100nF 100nF 47uF
10V 50V 50V 50V 10V
1206 1206
GND GND GND GND GND
L8
PIN14 PIN18 PIN23
1.2V_ETH
C102 C103 C104
47uF 100nF 100nF
10V 50V 50V
1206
GND GND GND
ESD protection
U9
1 10
TXRXM_D
TXRXM_B TXRXM_B
I/0 1 NC4
2 9
TXRXP_D
TXRXP_B TXRXP_B
I/0 2 NC3
3 8 GND
GND GND
GND GND
4 7 TXRXM_C
TXRXM_A TXRXM_A
I/0 3 NC2
5 6 TXRXP_C
TXRXP_A TXRXP_A
I/0 4 NC1
HSP061-4M10Y
Differential
Pair
TXRXP_A
TXRXM_A
Differential
Pair
TXRXP_B
TXRXM_B
Differential
Pair
TXRXP_C
TXRXM_C
Differential
Pair
TXRXP_D
TXRXM_D
CF1 100nF
50V
FBEAD1
GND GND_ETH
TRCT1 TRCT2 TRCT3 TRCT4
C110 C111 C112 C113
100nF 100nF 100nF 100nF
50V 50V 50V 50V
GND GND GND GND
PIN4 PIN9
AVDDL
C89 C90
100nF 100nF
50V 50V
GND GND
PIN44
AVDDL_PLL
C99 C100
100nF 10nF
50V 50V
GND GND
PIN26 PIN30 PIN39
DVDDL
C105 C106 C107 C108
100nF 100nF 100nF 100nF
50V 50V 50V 50V
GND GND GND GND
U10
1 10
TXRXM_D
I/0 1 NC4
2 9
TXRXP_D
I/0 2 NC3
3 8
GND
GND GND
4 7
TXRXM_C
I/0 3 NC2
5 6
TXRXP_C
I/0 4 NC1
HSP061-4M10Y
U19
11
TRD1+
12
TRCT1
TRCT1
10
TRD1-
4
TRD2+
6
TRCT2
TRCT2
5
TRD2-
3
TRD3+
1
TRCT3
TRCT3
2
TRD3-
8
TRD4+
7
TRCT4
TRCT4
9
TRD4-
16
LD_YELLOW
LD_YELLOW_C
15
AVDDH LD_YELLOW_A
13
LD_GREEN LD_GREEN_C
14
AVDDH LD_GREEN_A
JK0-0136NL
GND_ETH GND_ETH