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The Eyes Have It
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    This blog discusses all things related to mixed-signal PHY IP such as the latest trends, design challenges and anything that may be controversial.

    I built my first crystal radio at about the age of ten (had help with the soldering iron) and have been dabbling in the analog electronics field ever since. The "James Brown of Analog": I do like James Brown and have I been working in the electronics industry for many years. I’m also a big fan of Reggae and Ska and spent my youth listening to John Peel on Radio 1. Ken Boothe is the greatest singer. Running is a passion. Squaw Valley is the best place to ski. Ever!

    - Navraj Nandra

Shifting up MIPI M-PHY to gear 3 – a silicon demo

Posted by Navraj Nandra on March 18th, 2013

The MIPI M-PHY was developed for mobile devices where the important requirements were low pin count combined with very good power efficiency and high electro-migration interference (EMI) immunity. High performance is achieved through “gears”.

Gear 1 at 1.45 Gbps per lane, Gear 2 at 2.9 Gbps per lane and Gear 3 at 5.8 Gbps/lane. Mobile devices can be sensitive to EMI, and each gear of the M-PHY has two frequencies that are close together allowing to select the optimum from an radio receiver sensitivity perspective. Depending on your bandwidth needs you can go up to eight lanes. The picture below shows the M-PHY, it supports a number of protocols for different applications such as camera serial interfaces to camera sensors, internal displays, USB 3.0 or PCI Express protocols for chip to chip interfacing. For embedded storage, the next generation after the embedded multi-media card (eMMC) will be universal flash storage (UFS), a protocol the overlays the M-PHY.

MIPI M-PHY supporting many protocols for popular mobile requirements

So the point is that there are many applications and protocols that will use the MIPI M-PHY and the bandwidth needs are increasing. The latest specification to support the emerging bandwidth needs is Gear 3. This week during the MIPI Alliance face-to-face meeting in Asia, we will be demonstrating the first silicon proven M-PHY operating at High Speed Gear3.