Why does my eSRAM Intel Agilex® 7 FPGA IP not meet the maximum performance specification?

Description

Due to a problem in the Intel Quartus® Prime Pro Edition Software version 19.3 and later, the eSRAM Intel Agilex® 7 FPGA IP may not meet the maximum performance specification due to a hold violation.

Resolution

To work around this problem, modify the design file by adding  “ (* altera_attribute = "-name HYPER_REGISTER_DELAY_CHAIN 100"*) ” to the eSRAM IP instance. 

For Example:

(* altera_attribute = "-name HYPER_REGISTER_DELAY_CHAIN 100"*) esram esram_inst(       
        .esram0_ram_input_clk          (clk_500),
        ......

This problem is fixed starting with the Intel® Quartus® Prime Pro Edition Software version 21.2.