LE910Cx HW User Guide
1VV0301298 Rev. 33
Page 84 of 128
2021-06-29
Not Subject to NDA
The additional GPIOs below can be used in case their initial functionality is not used:
PAD
Signal
I/O
Initial Function
Alternate Function
Type
Note
L12
GPIO_13
I/O
WIFI_SDRST
Configurable GPIO
CMOS 1.8V
*
N13
GPIO_14
I/O
WIFI_SDIO_CMD
Configurable GPIO
CMOS 1.8V
J13
GPIO_15
I/O
WIFI_SDIO_D0
Configurable GPIO
CMOS 1.8V
M13
GPIO_16
I/O
WIFI_SDIO_D1
Configurable GPIO
CMOS 1.8V
K13
GPIO_17
I/O
WIFI_SDIO_D2
Configurable GPIO
CMOS 1.8V
H13
GPIO_18
I/O
WIFI_SDIO_D3
Configurable GPIO
CMOS 1.8V
L13
GPIO_19
I/O
WIFI_SDIO_CLK
Configurable GPIO
CMOS 1.8V
M8
GPIO_24
I/O
WCI_TXD
Configurable GPIO
CMOS 1.8V
*
M9
GPIO_25
I/O
WCI_RXD
Configurable GPIO
CMOS 1.8V
*
R14
GPIO_31
I/O
UART_RI
Configurable GPIO
CMOS 1.8V
P14
GPIO_32
I/O
UART_DSR
Configurable GPIO
CMOS 1.8V
N14
GPIO_33
I/O
UART_DCD
Configurable GPIO
CMOS 1.8V
M14
GPIO_34
I/O
UART_DTR
Configurable GPIO
CMOS 1.8V
F15
GPIO_35
I/O
SPI_CLK
Configurable GPIO
CMOS 1.8V
E15
GPIO_36
I/O
SPI_MISO
Configurable GPIO
CMOS 1.8V
D15
GPIO_37
I/O
SPI_MOSI
Configurable GPIO
CMOS 1.8V
H14
GPIO_11
I/O
SPI_CS
Configurable GPIO
CMOS 1.8V
Table 38: Additional GPIOs
Warning: GPIO’s marked with (*) should not be pulled high externally
(from the carrier board) during module power on procedure. Pulling
these pads high during module power up might lead to
unwanted/non-operational boot mode.
Note: LE910Cx GPIOs 1~10 can also be used as alternate I2C function.
Refer to Section 8.5.2, I2C - Inter-integrated Circuit.