Demystifying MIPI C-PHY / D-PHY Subsystem

An overview of both the D-PHY and C-PHY architecture.


The newest member of the MIPI PHY family, the C-PHY, arrived in October 2014 to a mixture of excitement and apprehension. How would this new C-PHY compare to the MIPI D-PHY and M-PHY? What would differentiate the C-PHY, and would it be compatible enough with the D-PHY so that both could coexist in a hybrid subsystem?

Now, years later, the answers are clear.

This article will lay out each of those answers, providing a high-level overview of both the D-PHY and C-PHY architecture, highlighting similarities and differences, identifying the pros and cons of each PHY, and providing insight into some of the challenges encountered while implementing the C-PHY.  Finally, we will look at Mixel’s innovative implementation of the C-PHY/D-PHY Combo IP, silicon results from multiple sources, cover uses cases, and examine the adoption of the C-PHY/D-PHY Combo solution in the market place.

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