PHY Lite for Parallel Interfaces FPGA IP User Guide

ID 683716
Date 1/13/2025
Public

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2.2.2. Dynamic Reconfiguration

If you enable dynamic reconfiguration, you can use an Avalon® memory-mapped interface to reconfigure the input and output delays in the PHY and calibrate the delays. Through calibration, you can optimize the delay settings to maximize the capture window. You can access the Avalon® memory-mapped interface through the Calibration FPGA IP. The IP provides an ARM AMBA* AXI4 Lite Interface. You can connect the Calibration IP to up to two PHY Lite for Parallel Interfaces IP instances in an I/O bank.

You can reset the PHY by enabling dynamic reconfiguration and writing to the TrainReset bit. The reset_n port in PHY Lite for Parallel Interfaces IP is a global power-up reset and resets the entire interface, including the PLL, all logic states in the I/O lanes, and the PHY dynamic reconfigurable delay control/status registers (CSR) that can be reset by the TrainReset bit.

Figure 11. Connection of the Calibration IP to the PHY Lite for Parallel Interfaces IP for Agilex™ 5 D-Series and E-Series Devices