Feature Summary - 6.0 English

Clocking Wizard LogiCORE IP Product Guide (PG065)

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6.0 English

The clocking options are listed below:

Frequency Synthesis allows output clocks to have different frequencies from the active input clock.

Spread Spectrum provides modulated output clocks, which reduces the spectral density of the electromagnetic interference (EMI) generated by electronic devices. This feature is available for the MMCM(E2/E3/E4)_ADV primitive only. UNISIM simulation support for this feature is not currently available.

Phase Alignment allows the output clock to be phase locked to a reference, such as the input clock pin for a device.

Minimize Power allows you to minimize the amount of power needed for the primitive. This is at the possible expense of frequency, phase offset, or duty cycle accuracy.

Dynamic Phase Shift allows you to change the phase relationship on the output clocks.

Dynamic Reconfiguration allows you to change the programming of the primitive after device configuration. When this option is chosen, the AXI4-Lite interface is selected by default for reconfiguring the clocking primitive.

Balanced . Selecting Balanced results in the software choosing the correct bandwidth for jitter optimization.

Minimize Output Jitter . This feature minimizes the jitter on the output clocks, but at the expense of power and possibly output clock phase error. This feature is not available with the Maximize input jitter filtering feature.

Maximize Input Jitter filtering allows for larger input jitter on the input clocks, but can negatively impact the jitter on the output clocks. This feature is not available with the Minimize output jitter feature.

Safe Clock Startup and Sequencing can be used to get a stable and valid clock at the output. It also enables clocks in a particular sequence order as specified in the configuration.

Clock Monitor helps you to monitor the clock inputs to the Clocking Wizard. It can monitor up to four clocks. You can monitor if the input frequency is out of range of the expected frequency, and detect clock stop and glitches in the clock.

Auto Primitive instantiates the appropriate clocking primitive for your requirements. You do not need know the specification of the MMCM or PLL to judge which primitive fits into your requirements; the Wizard does this for you. This feature is available for UltraScale and UltraScale+ devices only.