GigaDevice Semiconductor GD32450Z-EVAL - Ethernet (ENET) Interface Schematic; SDIO Interface Schematic

User Guide
GD32450Z-EVAL
15
4.12. ENET
Figure 4-12 Schematic diagram of Ethernet function
TX_CLK
1
TX_EN
2
TXD_0
3
TXD_1
4
TXD_2
5
TXD_3/SNI_MODE
6
PWR_DOWN/INT
7
NC
8
NC
9
NC
10
NC
11
NC
12
RD-
13
RD+
14
AGND
15
TD-
16
TD+
17
PFBIN1
18
AGND
19
NC
20
NC
21
AVDD33
22
PFBOUT
23
RBIAS
24
25MHz_OUT
25
LED_ACT/COL/AN_EN
26
LED_SPEED/AN1
27
LED_LINK/AN0
28
RESET_N
29
MDIO
30
MDC
31
IOVDD33
32
X2
33
X1
34
IOGND
35
DGND
36
PFBIN2
37
RX_CLK
38
RX_DV/MII_MODE
39
CRS/CRS_DV/LED_CFG
40
RX_ER/MDIX_EN
41
COL/PHYAD0
42
RXD_0/PHYAD1
43
RXD_1/PHYAD2
44
RXD_2/PHYAD3
45
RXD_3/PHYAD4
46
IOGND
47
IOVDD33
48
U7
DP83848CVV
+3V3
R27
2.2KΩ
RMII MODE
R28
1.5KΩ
+3V3
NRST
R34
2.2KΩ
+3V3
R35
4.87K
GND
E3
16V/10uF,AVX
C40
50V/0.1uF
C41
50V/0.1uF
C42
50V/0.1uF
GND
GND
+3V3
R32
2.2KΩ
R33
2.2KΩ
+3V3
R29
2.2KΩ
R30
2.2KΩ
R31
2.2KΩ
+3V3
TD+
1
4
TD-
2
RD+
3
5
RD-
6
L+
9
L-
10
R+
12
R-
11
GND1
13
GND2
14
JP12
HR911105A
GND
+3V3
R21
49.9Ω
R22
49.9Ω
R23
49.9Ω
R24
49.9Ω
C35
50V/0.1uF
C34 50V/0.1uF
GND GND
R25
240Ω
R26
240Ω
C36
50V/0.1uF
C37
50V/0.1uF
C38
50V/0.1uF
+3V3
GND
PC4
PC5
PA1
RMII_TX_EN
RMII_TXD0
RMII_TXD1
RMII_RXD0
RMII_RXD1
RMII_CRS_DV
RMII_MDC
RMII_MDIO
RMII_INT
RMII_REF_CLK
RMII_TX_EN
RMII_TXD0
RMII_TXD1
RMII_RXD0
RMII_RXD1
PC1
PB15
RMII_MDC
RMII_MDIO
RMII_INT
RMII_REF_CLK
RMII_CRS_DV
RP2
33Ω
RP3
33Ω
PB11
PA2
PA7
PB12
PB13
PB11
1
2
3
P4
MHDR1X3
Short P4(1,2) for LCD/Eth function
Short P4(2,3) for USB_HS function
USB_HS_ULPI_D4
RMII_TX_EN LCD_G5
PB12
1
2
3
P5
MHDR1X3
USB_HS_ULPI_D5
RMII_TXD0
PB13
1
2
3
P6
MHDR1X3
USB_HS_ULPI_D6
RMII_TXD1
1 2
4 3Y3
XO75-50MHz
GND
+3V3
C39
50V/0.1uF
Short P5(1,2) for Eth function
Short P5(2,3) for USB_HS function
Short P6(1,2) for Eth function
Short P6(2,3) for USB_HS function
I2S1_SD
4.13. SDIO
Figure 4-13 Schematic diagram of SDIO function
R49
10KΩ
R50
10KΩ
R51
10KΩ
R52
10KΩ
+3V3
+3V3
GND
PD2
PC12
PC8
PC9
PC10
SDIO_DAT3
SDIO_CMD
SDIO_CLK
SDIO_DAT0
SDIO_DAT1
SDIO_DAT2
PC11
SDIO_DAT3
SDIO_CMD
SDIO_CLK
SDIO_DAT0
SDIO_DAT1
SDIO_DAT2
D2
1
D3
2
CMD
3
VCC
4
CLK
5
GND
6
D0
7
D1
8
CD
9
JP21
TF_CARD_SOCKET
+3V3
SDIO
GND
R53
10KΩ
GND
C54
50V/4.7uF