PHY Initialization

Zynq UltraScale+ Device Technical Reference Manual (UG1085)

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2.4 English

After deasserting the reset, the PHY is uninitialized. PHY initialization is comprised of initializing the PHY PLL(s), running the initial impedance calibration, and running delay line calibration. These functions can all be triggered at the same time by writing PIR = x0004_0073. The initial impedance calibration can be run in parallel with the PLL initialization and subsequent delay line calibration.