PoC.arith.sqrtΒΆ

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Iterative Square Root Extractor.

Its computation requires (N+1)/2 steps for an argument bit width of N.

Entity Declaration:

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entity arith_sqrt is
  generic (
    N : positive -- := 8                   -- Bit Width of Argument
  );
  port (
    -- Global Control
    rst : in std_logic;                -- Reset (synchronous)
    clk : in std_logic;                -- Clock

    -- Inputs
    arg  : in std_logic_vector(N-1 downto 0); -- Radicand
    start : in std_logic;                      -- Start Strobe

    -- Outputs
    sqrt : out std_logic_vector((N-1)/2 downto 0);  -- Result
    rdy : out std_logic                           -- Ready / Done
  );
end entity arith_sqrt;