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

Press Calculate VCO Frequency Options 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, results in exact output frequencies.

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