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Occasional ContributorThe difference of ALt_pll/Altera pll
Dear Sir/Madam,
I'm porting projects from max10 to cyclone v, there're some difference in pll IP, as below,
1. the width of "phasecounterselect" are 3,but in cylone v, it's 5, difference?
2. How do I use "Phase_en" ? It's has't this pin in max10 pll.
3. Is “phase-step” equal to “scan_clk ”？
Ted.Gao
1 Reply
Rahul_S_Intel1Frequent Contributor
Hi ,
In Max 10,, you have Alt PLl and Cyclone V have altera pll.
Both PLL have different architectures,
To answer your question.
The register mapping of two devices are different.
Phasecounterslelect only 3 bits to select m or c couters
Refe Table :12 Max 10 user guide
In cyclone V Avalon bus is using for the reconfiguration on
For phase_en , signals are using in the Cyclone V devices not on Max 10, kindly find user guide [SR1] Table no: 6 for detailed explanation.
>> phase-step” equal to “scan_clk
Both are different ,refer page no: 58 of this document
