Dear All,
What the smallest unit accessible in an FPGA for realising hardware? I mean the smallest hardware unit programmable in FPGA through HDL of any Vendor specific Primitives.
You probably don't get it. LUT's are basically a network of multiplexers that route up signals that are either tied to GND or to Vcc. Multiplexers themselves are above gate level. They are a combination of logic gates.
The deepest you can go is gate level as there's no transistor level implementation associated with FPGAs.