Intel Cyclone 10 GX FPGA User Manual page 58

fXTAL
Shows the calculated internal fixed-frequency crystal based on the serial port register
values.
Default
Sets the frequency for the oscillator associated with the active tab back to its default
value. This can also be accomplished by power cycling the board.
Set
Sets the programmable oscillator frequency for the selected clock to the value in the
Target Frequency control for the programmable oscillators. Frequency changes
might take several milliseconds to take effect. You might see glitches on the clock
during this period. Intel recommends resetting the FPGA logic after changing
frequencies.
Figure 21. Clock Controller - Si5332
Si5332 tab displays the same GUI controls for each clock generators. The Si5332 is a
high-performance, low-jitter clock generator capabale of synthesizing five independent
banks for user-programmable clock frequencies up to 312.5 MHz.
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Intel Cyclone 10 GX FPGA Development Kit User Guide
58
5 Board Test System
UG-20105 | 2017.12.18