User Manual
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SPI Interface Description
：
29
ND_D7
I/O
SPI_HOLD
GPIO#40
31
ND_D6
SPI_WP
GPIO#39
33
ND_D5
SPI_MOSI
GPIO#38
35
ND_D4
SPI_MISO
GPIO#37
47
ND_RE_N
SPI_CLK
GPIO#36
55
ND_WE_N
SPI_CS1
GPIO#35
49
ND_CS_N
SPI_CS0
GPIO#34
SDIO Interface Description
：
51
ND_WP
I/O
SD_WP
GPIO#41
45
ND_RB_N
SD_CLK
GPIO#42
57
ND_ALE
SD_CMD
GPIO#44
53
ND_CLE
SD_CD
GPIO#43
43
ND_D0
SD_DATA0
GPIO#45
41
ND_D1
SD_DATA1
GPIO#46
39
ND_D2
SD_DATA2
GPIO#47
37
ND_D3
SD_DATA3
GPIO#48
USB2.0 Interface
：
61
USB2.0_DM
I/O
Usb2.0 Interface
Usb2.0 Interface
63
USB2.0_DP
Serial Interface
：
65
RXD3
I
RXD3/GPIO#8
Serial 3
67
TXD3
O
TXD3/GPIO#7
69
TXD1
O
TXD1/GPIO#1
Serial 1
71
RXD1
I
RXD1/GPIO#2
Reset pin
：
73
D2DB_PORST_N
I
Hardware reset pin, active low
System reset
