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Altera_Forum
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9 years ago

Fitter fails when placing ALTLVDS_RX instance on Arria V GX Starter Board

I am using the LVDS HSMC RX pins on the Arria V GX Starter Board, I have RX pins HSMA_RX_D[16:0] all to be clocked using HSMA_CLK_INP1 (all pins are LVDS). The incoming clock is 250MHz and the data i...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

UPDATE: I tried the same code on the Cyclone V GX Starter Kit and it works, of course the Cyclone V does not have DPA in the LVDS IP so that might be part of the reason. Does anyone have any idea how to get it to work on the Arria V? I am currently trying to work around the problem by using a PLL to generate a few phase shifted clocks and manually deserializing the data. This solution works for now but I suspect it will have setup and hold problems as the speeds change.