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So, for an uncompressed configuration data, is there any correlation btwn the no of LEs used in my design and the actual footprint of my design on the configuration data? (I.e, if the compilation summary says I am using 10% of LEs, is it that only 10% of the configuration data is my actual design?)
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I don't think this is what you're asking, but just want to make sure it's clear: For uncompressed config data, there is no correlation between# of LEs and the size of the config data. It is always fixed and would be the same whether using 10% of LEs or 98% of LEs.
I think what you are asking is if 10% of the config data describes your 10% utilized design and the other 90% does not. I suppose this may be roughly true, but I wouldn't think of it that way. If your design makes use of 10% of the LEs, then the config data MUST tell those LEs how to configure themselves. However, the config data MUST ALSO tell the other 90% LEs how to configure themselves as well. Same goes for I/O. For example, unused I/O need to be told if they should tri-state themselves or if they should become ground pins.
Hope that helps.
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