Friday, May 06, 2011

MIPI to Adopt USB Protocol, USB to Adopt M-PHY

PR Newswire: MIPI Alliance and the USB 3.0 Group will facilitate the combined use of the MIPI M-PHY(SM) physical layer with the SuperSpeed USB protocol and software layers to produce the SuperSpeed Inter-Chip (SSIC) specification. Currently under development, the spec will bring M-PHY's high bandwidth and low power, and the performance enhancements of SuperSpeed USB "inside" the mobile device interface system. The two groups anticipate the SSIC specification will be available to USB adopters in early 2012.

Essentially it brings the unification between PC and mobile worlds, allowing same MIPI-interfaced sensors be used for both. So far M-PHY interface works up to 2.9 Gbps per lane with up-scalability to 5.8 Gbps per lane, while SuperSpeed USB has a 5 Gbps signaling rate.

Update: EETimes published an article on MIPI-USB marriage.


  1. I wonder if the protocols will be a good match for both applications. Inside a mobile device the "network" is unchanging; you just need a fast, efficient point-to-point interconnect. For a PC, you have many different devices on the bus, potentially appearing and disappearing. That requires a lot more protocol overhead to manage the network, device capabilities, and identities. A unified protocol may not serve either application well.

  2. they could have use lightpeek/ thunderbolt spec, ultimately we have to go there so why wait

  3. @Anonymous #1: Take a look at UniPro on top of M-PHY for the future of mobile arcitecture. No point-to point there.


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