Decimal-to-Binary Encoder
This page contains Verilog-A model of the decimal to binary encoder.
Usage:
- Create a new cell in Library Manager named dec2bin and select cell type Verilog A;
- Copy and paste the code provided;
- Specify binary_bits variable to be the desired binary bits number;
- Perform Check and Save;
- A cell symbol will be created;
- Instantiate dec2bin cell into your design;
- Perform Check and Save and run the simulation.
Cell name: dec2bin
Model type: Verilog-A
1// Decimal number to binary code converter
2// LSB is [0]
3// Change binary_bits variable for your needs!
4// Author: A. Sidun
5// Source: AnalogHub.ie
6
7\`include "constants.vams"
8\`include "disciplines.vams"
9\`define binary_bits 8\t\t\t\t// define number of binary bits here
10
11module dec2bin(out);
12output [\`binary_bits-1:0] out;
13voltage [\`binary_bits-1:0] out;
14
15parameter real decimal_number = 5;
16parameter real vdd = 1.0;\t\t\t// voltage level of logic 1 (V)
17parameter real vss = 0;\t\t\t\t// voltage level of logic 0 (V)
18real dout[\`binary_bits-1:0];\t\t// internal result variable
19genvar i;
20real x;
21real z;
22
23analog begin
24// Converting decimal to binary using modulus of 2
25\tx = decimal_number;
26while (x!=0) begin
27\tfor (i = 0; i <\`binary_bits; i = i + 1) begin
28\t\tz = x/2.0;
29\t\tx = floor(z);\t
30\t\tdout[i] = ceil(z - x);
31\tend
32end
33
34// Plotting outputs
35for (i=0; i<\`binary_bits; i=i+1)
36\t V(out[i]) <+ transition(dout[i]*vdd,0,0);
37end
38
39endmodule