Intel Stratix 10 GX User Manual page 84

Reset Si570
The clear control sets the Si570 programmable oscillator to the default frequency as
follows:
•
Y3 = 644.53125 MHz
•
Y4 = 706.25 MHz
•
Y5 = 625 MHz
•
Y6 = 875 MHz
Set New Frequency
The Set New Frequency control sets the Si570 programmable oscillator frequency to
the value in the Target frequency control. Frequency changes might take several
milliseconds to take effect. You might see glitches on the clock during this time.
Note: Intel recommends resetting the FPGA logic after changing frequencies
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Intel Stratix 10 GX Transceiver Signal Integrity Development Kit User Guide
84
6 Board Test System