Enter the desired target frequencies for each output, as well as the desired output format, output source, whether the output is SYSREF, and whether the output is being used or not.

Press the Calculate VCO Frequency Options button to generate a list of possible VCO frequency combinations.

Figure 6-5 Step 5: Clock Outputs.

Select a desired combination of VCO frequencies from the list of calculated values. If a specific VCO frequency is not in this list, a manual override can occur by selecting the Enable User Override checkbox and typing in the desired VCO frequencies. The Copy to Selected VCO Frequency box can also be used to copy the VCO frequency in the list selections to the VCO overrides.

Press the Assign Selected VCO Settings to Device button to update the VCO frequencies, then press the Apply Output Clock Settings to Device button. By default, the analog PLL frequencies are shown. The DPLL calculated frequency from step 6, however, will result in exact output frequencies.

After the output frequency plan is calculated, ensure that a valid XO input is fed into the device so the APLLs can lock and generate the required frequencies. The device will not output any clocks until all enabled APLLs are locked.