Hardware Documentation efus™A9X+ efus™A9Xr2
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J1
Pin Use on base board
I/O
Remarks; onboard pullups
1.12->
1.20
change
60
SPI_B_IRQ1
I*
100k pull-up
61
MPCIE_WAKE
I
62
SPI_B_IRQ2
I*
100k pull-up
63
GND
PWR
64
GND
PWR
65
SD_B_DAT2
I/O*
66
SPI_A_MISO
I*
67
SD_B_DAT3
I/O *
68
SPI_A_MOSI
O5*
69
SD_B_CMD
O5*
100k pull-up
70
SPI_A_SPCK
O5*
71
SD_B_VCC
PWR
3.3V out for SD-Card B
72
SPI_A_CS1
O5*
73
SD_B_CLK
O5*
74
SPI_A_CS2
O5*
75
GND
PWR
76
SPI_A_IRQ1
I*
100k pull-up
77
SD_B_DAT0
I/O*
100k pull-up
78
SPI_A_IRQ2
I*
100k pull-up
79
SD_B_DAT1
I/O*
80
GND
PWR
81
SD_B_WP
I*
82
I2C_B_DAT
I/O*
4.7k pull up
83
SD_B_CD
I*
84
I2C_B_CLK
O5*
4.7k pull up
85
GND
PWR
86
I2C_B_IRQ
I*
100k pull-up
87
BL_CTRL
O5*
PWM Backlight dimming
88
I2C_B_RST
O5*
100k pull-up
89
VCFL_ON
O5*
Backlight on
90
GND
PWR
91
GND
PWR
92
RXD_A_TTL
I*
Debug, 100k pull-up