I3C standard

[engr_joni_ee]

Have you heard about I3C ?

I just came to know the new standard I3C. I have worked with I2C earlier which is very common industrial standard for data communication. I have not seen any device with I3C module supporting I3C bus. The speed is increased up to 10 Mbit/s which is comparable to SPI. The I3C is still two wire interface, the clock and the data which is the same as I2C. Not sure if I3C is backward compatible with I2C or not.

 

[FvM]

The speed is increased up to 10 Mbit/s which is comparable to SPI.

There's no relation of I3C to SPI.

Not sure if I3C is backward compatible with I2C or not.

MIPI I2C Basic V1.1.1

In a system, there are three possible I3C Bus Configurations:
1. Pure Bus: Only I3C Devices are present on the Bus.
2. Mixed Fast Bus: Both I3C Devices and Legacy I2C Devices are present on the Bus, such that the Legacy I2C Devices are restricted to ones that are generally permissible (i.e., Target-only, and no Target clock stretching), and that have a true I2C 50 ns Spike Filter on SCL. (I.e., I2C Devices that do not ‘see’ the SCL line as High when the High duration is less than 50 ns, across all temperatures and processes.)
3. Mixed Slow/Limited Bus: Both I3C Devices and Legacy I2C Devices are present on the Bus, such 1238 that the Legacy I2C Devices are restricted to ones that are generally permissible (i.e., Target-only, and no Target clock stretching), but that do not have a true I2C 50 ns Spike Filter on SCL.