Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs

ID 814346
Date 4/01/2024
Public
Document Table of Contents

5.5.6.7. Generation of CE#, CLE, ALE, WP#, and RE# signals

The generation of the CE#, CLE, ALE, WP#, and RE# signals is done in their own hardware modules which controls the behavior of the signals depending on the actual operation mode of the PHY. For each of the signals, there are some specific input signals that come from the memory controller and pass through the frequency ratio module to get the corresponding signal in the clk_phy clock domain.

Similar to the signals described earlier, these control signals can also be delayed for 1 clk_phy clock cycle using the ctrl_clkperiod_delay field in the phy_ctrl_reg register.

In the case of the ALE signal, the pu_pd_polarity field in the phy_ctrl_reg register is used to define its polarity for SD operation mode.