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===M-PHY===
Versions 1.4 and beyond of UniPro plan to support both the D-PHY as well as M-PHY technology. The M-PHY technology is still only in draft status, but supports high-speed data rates starting at about 1000 Mbit/s (the M-PHY was named after the Roman number for 1000). In addition to higher speeds, the M-PHY will use fewer signal wires because the clock signal is embedded with the data through the use of industry-standard [[8B/10B encoding|8b10b encoding]]. Again, a PHY capable of transmitting user data at 1000 Mbps is typically specified as being in 1250 Mbps mode due to the 8b10b encoding.
The D- and M-PHY are expected to co-exist for multiple years because the D-PHY is a less complex technology while the M-PHY provides higher bandwidths despite using fewer signal wires.▼
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▲The D- and M-PHY are expected to co-exist for multiple years because the D-PHY is a less complex technology while the M-PHY provides higher bandwidths despite using fewer signal wires.
==PHY Adapter Layer (L1.5)==
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