what is the use of Scls and sdas

[Prasanth_C]

@nxp hi , so i just want to know something about i2c secondary data line and secondary clock line.

1)for example i want to use Scls and sdas line for accessing eeprom , is this possible to use lpi2c driver .

2)tell me what is the use of both lines over normal scl and sda?

[danielmartynek]

Hi @Prasanth_C,

I'm not sure what your use case is.

The functionality depends on the configuration of MCFGR1[PINCFG].

PINCFG = 0b011

PINCFG = 0b100 or 0b110

SDA, SCL used by Master

SDAS, SCLS used by Slave

PINCFG = 0b111

Regards,

Daniel

[Prasanth_C]

Dear @danielmartynek 

Thanks for the response

In our schematic, We are using SCL(PTD14, PTC8) and SDA(PTC9 , PTD13) pins as GPIO

We need to use SCLS(PTB1) and SDAS( PTB0) as I2C  Master( LPI2C0)  - Two wire mode 

Is that possible? Please clarify. 

Below is the drawing , 

Tagging my colleagues for reference

@LavanyaR

@Riyasma07 

[danielmartynek]

Hello @Prasanth_C,

Unfortunately, there is no PINCFG configuration that would allow that.

Best regards,

Daniel