Verilog LUT
时间: 2023-11-08 15:48:02 浏览: 40
Verilog LUT (Look-Up Table) refers to a logic element that performs combinational logic functions. It is commonly used in digital circuit design and is represented using the Verilog Hardware Description Language (HDL). A Verilog LUT is essentially a table that maps input combinations to output values.
In Verilog, a LUT can be implemented using an array or a case statement. Here's an example of how a 2-to-1 LUT can be described in Verilog:
```verilog
module lut2to1 (
input wire a,
input wire b,
output wire y
);
reg y;
always @*
case ({a, b})
2'b00: y = 1'b0; // Output for input combination "00"
2'b01: y = 1'b1; // Output for input combination "01"
2'b10: y = 1'b1; // Output for input combination "10"
2'b11: y = 1'b0; // Output for input combination "11"
endcase
endmodule
```
In this example, the inputs `a` and `b` are combined using the `{a, b}` concatenation operator. The case statement maps the input combinations to the corresponding output values.
This is just a simple example of a LUT implementation in Verilog. In practice, LUTs can have more inputs and can be used to implement various logic functions within digital circuits.