ST STM32H750B-DK User Manual

Figure 18. Ethernet
5 19
Ethernet
Title:
Size:
Reference:
Sheet: ofA4
Revision:
Project:
STM32H745I-Disco
MB1381B 02
06-SEP-19
H745XI
Date:
-
Variant:
MII_TXD0
MII_TX_EN
MII_TX_CLK
MII_RXD0
MII_RX_ER
MII_RX_DV
MII_RX_CLK
MII_COL
MII_CRS
RESET#
MII_TXD1
MII_TXD2
MII_TXD3
MII_RXD1
MII_RXD2
MII_RXD3
MII_TX_ER/nINT
PC3
PG11
PG13
PG12
PC2
PE2
PC4
PC5
PB0
PB1
PI10
PA7
PH2
PH3
PA1
MII_MDC
MII_MDIO
PC1
PA2
LED_G_A
LED_G_K
LED_Y_A
LED_Y_K
RD_P
TD_N
TD_P
RD_N
PoE
PoE.SchDoc
100nF
C56
PB2
12K1R96
49.9R
R91
49.9R
R90
49.9R
R88
49.9R
R89
3V3
100nF
C71
100nF
C69
1uF
C89
100nF
C97
3V3
330R
R7
10K
R94
330R
R95
0RR122
OSC_25M
470pF
C86
1K5R134
3V3
4K7
R127
Note:
Remove R127 and keep R123 when nINT function
is enabled. TXER is disabled
Remove R123 and keep R127 when nINT function
is disabled. TXER is enabled
100RR120
100RR137
100RR141
VDD2A
1
LED2/nINT/nPME/nINTSEL
2
LED1/nINT/nPME/REGOFF
3
XTAL2
4
XTAL1/CLKIN
5
VDDCR
6
RXCLK/PHYAD1
7
RXD3/PHYAD2
8
RXD2/nPME/RMIISE;
9
RXD1/MODE1
10
RXD0/MODE0
11
VDDIO
12
RXER/RXD4/PHYAD0
13
CRS
14
COL/CRS_DV/MODE2
15
MDIO
16
MDC
17
nINT/TXER/TXD4
18
nRST
19
TXCLK
20
TXEN
21
TXD0
22
TXD1
23
TXD2
24
TXD3
25
RXDV
26
VDD1A
27
TXN
28
TXP
29
RXN
30
RXP
31
RBIAS
32
EP
33
LAN8740Ai-EN-TR
U9
100RR136
100RR97
100RR140
100RR139
100RR138
100RR146
100RR133
VDD_ETH
VDD_ETH
10pF
C68
10pF
C67
10pF
C65
10pF
C66
R123
N/A
DNF
3V3
LED2_ETH
SB25
SB28
LED2_ETH
SB22
SB14
Note:
keep R94 to enable the TXER function, and close
SB22,SB28,open SB14,SB25 for LED2
Remove R94 and SB14 to enable nINT founction, and
close SB14,SB25, open SB22,SB28 for LED2
R119
N/A
DNF
4K7 R169
3V3
PHY Address: 01h
R1
67
N
/
A
DNF
R168N/A
DNF
R1
70N
/A
DNF
R166 N/A
DNF
120ohm
L5
i
MII
i
MII
Matched Net Lengths [Tolerance = 100mil]
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
i
MII
UM2488
Electrical schematics
UM2488 - Rev 4
page 35/55

ST STM32H750B-DK Specifications

General

Brand	ST
Model	STM32H750B-DK
Category	Microcontrollers
Language	English