2.2.2 Exact Value Option

The RTG4 FCCC with Enhanced PLL Calibration Configurator automatically tries to compute a configuration that meets the frequency requirements and all the internal CCC/PLL constraints. If the configurator is unable to find an exact solution for all requirements, it finds a configuration that globally minimizes the error between the required and actual frequency. When you click the Exact Value check box to turn on this option, it forces the configurator to generate the nearest actual frequency with a tolerance of 0.5 kHz.

Figure 2-3. Output Clock Frequency
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