LE910Cx Hardware Design Guide
1VV0301298 Rev.40 Page 87 of 149 2023-03-16
Not Subject to NDA
The Input pads can only be read, reporting the digital values (high / low) present on the
pad at the time of reading. The Output pads can only be written or queried and set values
on the pad output. Pads with alternative function can be internally controlled by the
LE910Cx firmware and act according to the implementation.
The following GPIOs are always available as a primary function on the LE910Cx.
PAD Signal I/O Function Type Note
C8 GPIO_01 I/O Configurable GPIO CMOS 1.8V *
C9 GPIO_02 I/O Configurable GPIO CMOS 1.8V
C10 GPIO_03 I/O Configurable GPIO CMOS 1.8V
C11 GPIO_04 I/O Configurable GPIO CMOS 1.8V
B14 GPIO_05 I/O Configurable GPIO CMOS 1.8V *
C12 GPIO_06 I/O Configurable GPIO CMOS 1.8V *
C13 GPIO_07 I/O Configurable GPIO CMOS 1.8V *
K15 GPIO_08 I/O Configurable GPIO CMOS 1.8V *
L15 GPIO_09 I/O Configurable GPIO CMOS 1.8V *
G15 GPIO_10 I/O Configurable GPIO CMOS 1.8V
Table 37: Primary GPIOs
Warning: GPIO’s marked with (*) must 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.
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 *
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