Data Sheet

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LS9X – Data Sheet

Libre Wireless Technologies Data Sheet: Ver:1.0 Page 18 of 23

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6.4. GPIO Details

Interface

Signal Name

GPIO No

Type

Availability/Usage

SPI

SPI1_SS0

GPO5

Output

YES

SPI1_SCLK

GPO8

Output

SPI1_SDO

GPIO9

Input/output

SPI1_SDI

GPIO10

Input/output

UART

UART_RXD

GPIO3

Input/output

Yes

HOST UART/Debug / GPIO

Interface

UART_TXD

GPIO4

Output

I2C

interface

I2C_SCL

GPIO6

Input/output

Yes

I2C interface for Crypto, ACP

CODEC, and HOST-MCU

Communication (optional)

I2C_SDA

GPIO7

Input/output