Receiver UI Specification - 16.2 English

1G/2.5G Ethernet PCS/PMA or SGMII LogiCORE IP Product Guide (PG047)

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16.2 English
Important: The DRU must have at least two valid sampling points per data bit, requiring 0.5 UI of opening. The settings of the FPGA add 0.125 UI of requirement making a total opening requirement at the receiver of 0.625 UI.