does anyone what is the xilinx block for getting a three state logic?
Electronic – System Generator: a block similar to a three state logic
digital-logicfpgatri-statexilinxxilinx system generator
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Best Answer
If you mean 0/1/Z, which I assume from the tags, that's in the IOB. Internal tri-states aren't in current FPGA families. See the Xilinx documentation or any VHDL/Verilog book.
Specifically to answer trayres comment, there are external (IOB) tri-states, but not internal tri-states.