PHY Lite for Parallel Interfaces Intel® FPGA IP User Guide

ID 683716
Date 4/01/2024
Document Table of Contents Clock and Reset Interface Signals

Table 49.  Clock and Reset Interface Signals
Signal Name Direction Width Description
ref_clk Input 1 Reference clock for the PLL. The reference clock must be synchronous with group_strobe_in to ensure that the dqs_enable signal is in-sync with group_strobe_in.
reset_n Input 1 Resets the interface during power-up reset. To reset the PHY, you must enable dynamic reconfiguration and write to the TrainReset bit.
interface_locked Output 1 The interface_locked signal from the PHY Lite for Parallel Interfaces IP to the core logic. This signal indicates that the PLL and PHY circuitry are locked.

Data transfer should start after the assertion of this signal and control signals should be kept at zero before interface_locked is asserted.

rzq Input 1 This pin is visible if you select an I/O standard with on-chip termination (OCT) in the IP parameter editor.
core_clk_out Output 1 Use this core clock in the core-to-periphery transfer of soft logic data and control signals.

The core_clk_out frequency depends on the interface frequency and clock rate of user logic parameters.