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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...
AqidAyman_Altera's avatar
AqidAyman_Altera
Icon for Regular Contributor rankRegular Contributor
2 years ago

Hi King22,


No problem.


The internal team ask for the confirmation on below situation that you faced:

- 21.1, 4 transceiver channels - crash with internal error

- 21.1, <4 transceiver channels - can compile, fpll can lock

- 22.4, 4 transceiver channels - can compile, fpll cannot lock

- 22.4, <4 transceiver channels - can compile, fpll cannot lock


Is it accurate?


Regards,

Aqid


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

Hi AqidAyman

I modify first 2 item as below

- 21.1, >4 transceiver channels - crash with internal error

- 21.1, =<4 transceiver channels - can compile, fpll can lock

Above case is that , fpll's source is from io_pll

and if I use differential clk as fpll'a source , Q22.4's fpll will locked

BRs

King22