The cyclone IV PLL takes in a 144 bit stream for PLL reconfig. This contains 18 bits for each C4, C3, C2, C1, C0, M and N and 9 bits each for charge pump and loop filter. This information is contained in table 5-7 on pg 5-37 of the cyclone iv handbook.
For a given input frequency and desired output frequency from the PLL. How does one determine the value of all these things I mentioned above?
Is there a unique set of values to get a specific output frequency-phase relationship to an input frequency or can multiple values of this 144 bit (made up of 9 fields in total) word achieve the same result?
For a given input frequency and desired output frequency from the PLL. How does one determine the value of all these things I mentioned above?
Is there a unique set of values to get a specific output frequency-phase relationship to an input frequency or can multiple values of this 144 bit (made up of 9 fields in total) word achieve the same result?