If the buffer is enabled, the output is the same as the input. If the buffer is disabled, the output is assigned a floating value (z). HDL Example 4.10 Tristate Buffer SystemVerilog module tristate(input logic [3:0] a, input logic en, output tri [3:0] y); assign y = en ? a...
It is possible to improve delay even further by merging the AND/OR functions of a tristate buffer. FIG. 7is a flowchart of processing performed in implementing a tristate bus on an FPGA in accordance with an example embodiment of the invention. In general, the process uses the number of ...