To use an internally generated system clock, change
System Clock on the DDR Basic tab from
Differential to Internal, as shown in the following figure. This adds the
sys_clk0 port to the AXI NoC symbol. If this NoC instance includes
more than one DDRMC, multiple sys_clk ports will appear, one per DDRMC. These
sys_clk ports must be connected to the HSM1 clock output from CIPS.
This clock port is not normally shown on the CIPS instance. To make it visible, use the
following Tcl command:
set_property -dict [ list CONFIG.PS_PMC_CONFIG { PMC_HSM1_CLk_OUT_ENABLE 1 } ] [ get_bd_cells versal_cips_0 ]
The HSM1 output frequency from CIPS must correspond to the Input System Clock Period (ps) selected on the DDR Basic tab. The HSM1 output frequency can be adjusted on the Output Clocks tab of the CIPS configuration screen, as shown in the following figure.
