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MGonz22
Beginner
270 Views

Arria10 IOPLL + serdes, fitter error message: Error(14566): The Fitter cannot place 1 periphery component(s) due to conflicts with existing constraints (1 LVDS_CLOCK_TREE(s))

I´m working with quartus pro 19.4 and Arria10 SX. I have a pll(IOPLL3B) + tx serdes with lvds outputs in banks 3A and 3B. The fitter can´t place my assignment. Nevertheless, if I change the PLL to IOPLL3A (changing the clk pinout), the fitter finish ok with the same lvds pinout.

Regarding the Arria10 handbook, It´s supposed that the IOPLL can feed tx serdes in adjacent banks. Why from IOPLL3A works to banks 3A and 3B and from IOPLL3B doesn´t work?

The compilation was ok with the quartus 16.0 version, now we changed to quartus 19.4 and it doesn´t work. We already have our board with this pinout, changing the pinout is very expensive for us, for we need a new PCB.

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2 Replies
Rahul_S_Intel1
Employee
106 Views

Kindly find the private message

Rahul_S_Intel1
Employee
106 Views

Hi,

With the above I am closing the forum thread.

 

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