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gschorcht's avatar
gschorcht
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4 years ago

Fitter can't fit a small design in Cyclone V SE that fits in a much smaller Cyclone IV device

Hi, When I try to compile a design for a Cyclone V 5CSEMA5 that works perfectly on a much smaller Cyclone IV, the fitter says: Info (170195): Router estimated average interconnect usage is 2% ...
aesq's avatar
aesq
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2 years ago

Hi,

As I was facing a similar issue with my project,

I took his example and played with the options, placement and so on.

I found an option that makes the routing ok (I changed to my Cyclone V type).

Intel should investigate why this option makes the routing failing.

See picture showing the option, change it from ON to OFF.

This was tested with Quartus 21.1.1 std.