Why does the LPDRR4 EMIF IP hang when attempting to read from it when using the Agilex™ 5 AXI-4 Interface?

Description

 Due to a problem in the Quartus® Prime Pro Edition Software version 24.1, the LPDDR4 EMIF IP may hang when attempting to read from memory using the AXI-4 interface due to signals being unintentionally optimized away.

Resolution

To workaround this problem, add the /*synthesis dont_merge syn_preserve = 1*/  attribute to all the registers of the AXI bus driving the Trafic Generator.