VHDL-2008 quick reference – ENTITY

ENTITY

entity uart_tx is
  port (
    reset_n        : in  std_logic;
    clk            : in  std_logic;
    tx_valid       : in  std_logic;
    tx_data        : in  std_logic_vector(7 downto 0);
 
    tx_busy        : out std_logic;
    tx_out         : out std_logic
  );
end uart_tx;