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King22's avatar
King22
Icon for New Contributor rankNew Contributor
3 years ago

s10 fpll can't lock in quartus 22.4

Hi All I use s10 fpga , and the compiler is quartus22.4 , in my design , I use a fpll as transceiver pll , but the fpll can not lock ， but when I use quartus21.1 to compile , fpll get lock...
Ash_R_Intel's avatar
Ash_R_Intel
Icon for Regular Contributor rankRegular Contributor
3 years ago

No, the IOPLL -> FPLL2 itself will not work, meaning they cannot be physically connected. So, even this arrangement is not feasible.


Regards


King22's avatar
King22
Icon for New Contributor rankNew Contributor
3 years ago

Hi Ash_R

I will try the reference clk direct from differential pair , but it will limited my design ,

by the way , The same project processed by Quartuspro 21.1 work well , fpll can get locked , and function is correct，

so I think there is a way form IOPLL to FPLL, may be different Quartus version process the design different way .

BRs

King22