6.4.1. UniPHY IP
The high-performance memory interface solution includes the self-calibrating UniPHY IP that is optimized to take advantage of the Cyclone® V I/O structure and the Intel® Quartus® Prime software Timing Analyzer. The UniPHY IP helps set up the physical interface (PHY) best suited for your system. This provides the total solution for the highest reliable frequency of operation across process, voltage, and temperature (PVT) variations.
The UniPHY IP instantiates a PLL to generate related clocks for the memory interface. The UniPHY IP can also dynamically choose the number of delay chains that are required for the system. The amount of delay is equal to the sum of the intrinsic delay of the delay element and the product of the number of delay steps and the value of the delay steps.
The UniPHY IP and the Altera memory controller IP core can run at half the I/O interface frequency of the memory devices, allowing better timing management in high-speed memory interfaces. The Cyclone® V devices contain built-in circuitry in the IOE to convert data from full rate (the I/O frequency) to half rate (the controller frequency) and vice versa.
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