MIPI I3C TCRI v1.0 was released in September 2022.
Originally introduced in 2016, MIPI I3C is a scalable utility and control bus interface, providing a unified, high-performing, very-low-power solution for connecting peripherals to a processor. The interface gives developers unprecedented opportunities to craft innovative designs for any mobile product—from smartphones, to wearables, to systems in automobiles. Bundling the features most commonly needed by developers and other standards organizations, MIPI I3C Basic is a publicly available subset of the full I3C specification.
Upon its release in 2018, MIPI I3C HCI delivered breakthrough efficiencies for designers of applications leveraging I3C and I3C Basic by providing a consistent method for interfacing operating systems to I3C or I3C Basic, and eliminating the need for product-specific drivers. The generic, portable I3C/I3C Basic drivers that I3C HCI enables convey greater control over ongoing development costs and complexity.
MIPI I3C TCRI splits the I3C HCI transfer command and transfer response structures into their own specification. I3C TCRI can serve as the starting point for any network integrations that encapsulate I3C/I3C Basic.