User Manual
GD32107C-EVAL
12
/
15
4.14 EXMC-NAND Flash
Figure 14. Schematic diagram of EXMC-NAND Flash function
CL
16
AL
17
W
18
R
8
E
9
VSS2
36
VSS1
13
VDD2
37
VDD1
12
IO7
44
IO6
43
IO5
42
IO4
41
IO3
32
IO2
31
IO1
30
IO0
29
WP
19
RB
7
U11
HY27UF081G2A
EXMC_A16
EXMC_A17
EXMC_NWE
EXMC_NOE
Nand_CS
R64
10K
Ω
+3V3
R63 10K
Ω
+3V3
R66 10K
Ω
+3V3
EXMC_NWAIT
GND
+3V3
Nand Flash
EXMC_D7
EXMC_D6
EXMC_D5
EXMC_D4
EXMC_D3
EXMC_D2
EXMC_D1
EXMC_D0
C50
50V/0.1uF
C51
50V/0.1uF
+3V3
GND
4.15 Ethernet
Figure 15. Schematic diagram of Ethernet
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
U8
DP83848CVV
+3V3
R32
2.2K
Ω
RMII MODE
R33
1.5K
+3V3
R37
0
Ω
NRST
R40
2.2K
Ω
+3V3
R41 4.87K
GND
E3
16
V
/10
uF
,AVX
C37
50
V
/0
.1
uF
C38
50
V
/0
.1
uF
C39
50
V
/0
.1
uF
GND
GND
+3V3
R38
2.2K
Ω
R39
2.2K
Ω
+3V3
R34
2.2K
Ω
R35
2.2K
Ω
R36
2.2K
Ω
+3V3
TD+
1
4
TD-
2
RD+
3
5
RD-
6
L+
9
L-
10
R+
12
R-
11
GND1
13
GND2
14
JP16
HR911105A
GND
+3V3
R26
49.9
Ω
R27
49.9
Ω
R28
49.9
Ω
R29
49.9
Ω
C36
50V/0.1uF
C35 50V/0.1uF
GND
GND
R30
240
Ω
R31
240
Ω
C40
50V/0.1uF
C41
50V/0.1uF
C42
50V/0.1uF
+3V3
GND
PB11
PC4
PC5
PA1
PA8
MCO
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
PB0
RMII_MDC
RMII_MDIO
RMII_INT
RMII_REF_CLK
RMII_CRS_DV
RP2
33R
RP3
33R
PB12 and PB13 are AFIOs
，
refer to I2S schematic for right config
PB12
PB13
PA2
PA7
PA2 is an AFIO, refer to USART schematic for right config
PA7 is an AFIO, refer to SPI schematic for right config
