I2C pin configuration

Jusaira — Wed, 28 Jun 2023 08:12:40 GMT

Hi team,

I am working on I2C communication in S32K146 in 2-wire scheme. Is there any possible way to use secondary data and clock pins of I2C (LPI2C0_SCLS(PTA0) and LPI2C0_SDAS(PTA1)) for communication instead of LPI2C_SCL(PTA2) and LPI2C0_SDA(PTA3). Please let me know if there is any software configuration possibility for that.

Also please give me inputs on how we configure I2C into 2-wire scheme or 4-wire scheme? Should it be done in software?

Re: I2C pin configuration

VaneB — Wed, 28 Jun 2023 18:42:10 GMT

Hi @Jusaira

The configuration of these signals depends on if it uses I2C in 4-wire mode or 2-wire mode.

For SCLS in "4-wire mode, this is the SCLS output pin. If LPI2C master/slave are configured to use separate pins, then this the LPI2C slave SCL pin."

For SDAS in "4-wire mode, this is the SDAS output pin. If LPI2C master/slave are configured to use
separate pins, then this the LPI2C slave SDA pin."

Please look at Chapter 52 (Low Power Inter-Integrated Circuit (LPI2C)) of the S32K1xx Series Reference Manual, Rev. 13, for more information about this module.

B.R

VaneB

topic I2C pin configuration in S32K

I2C pin configuration

Re: I2C pin configuration