Given the following ASM chart
Write a complete VHDL code to implement the architecture using 3 processes. (Use a positive edge clk and a low level asynchronous Reset)
library IEEE;
use IEEE.STD_LOGIC_1164.ALL; Entity Parallel_To_Serial is
port( CLK, RESET, WR: in std_logic;
Data : in std_logic_vector(6 downto 0)
TXD : out std_logic);
End Parallel_To_Serial;
architecture BEHAVIOR of Parallel_To_Serial is
You have to submit two files:
- A VHDL code to implement your ASM.
- A testbench file to simulate and test your design. You should cover the following cases:
| Cases: | Reset | Data | WR | Duration |
| Reset: Activation | 0 | – | 0 | 5 clock cycles |
| Reset: Deactivation | 1 | – | 0 | 3 clock cycles |
| Parallel Load | 1 | 1010100 | 1 | 2 clock cycles |
| 1 | 1010100 | 0 | 15 clock cycles | |
| Parallel Load | 1 | 1011100 | 1 | 2 clock cycles |
| 1 | 1011100 | 0 | 15 clock cycles | |
| Parallel Load | 1 | 0000000 | 1 | 2 clock cycles |
| 1 | 0000000 | 0 | 15 clock cycles | |
| Parallel Load | 1 | 1111111 | 1 | 2 clock cycles |
| 1 | 1111111 | 0 | 15 clock cycles | |
| Reset: Activation | 0 | – | 5 clock cycles |
