|
|
------------------------------------------------------------------------------
|
|
|
-- This file is a part of the LPP VHDL IP LIBRARY
|
|
|
-- Copyright (C) 2009 - 2012, Laboratory of Plasmas Physic - CNRS
|
|
|
--
|
|
|
-- This program is free software; you can redistribute it and/or modify
|
|
|
-- it under the terms of the GNU General Public License as published by
|
|
|
-- the Free Software Foundation; either version 3 of the License, or
|
|
|
-- (at your option) any later version.
|
|
|
--
|
|
|
-- This program is distributed in the hope that it will be useful,
|
|
|
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
-- GNU General Public License for more details.
|
|
|
--
|
|
|
-- You should have received a copy of the GNU General Public License
|
|
|
-- along with this program; if not, write to the Free Software
|
|
|
-- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
------------------------------------------------------------------------------
|
|
|
-- Author : Martin Morlot
|
|
|
-- Mail : martin.morlot@lpp.polytechnique.fr
|
|
|
------------------------------------------------------------------------------
|
|
|
LIBRARY IEEE;
|
|
|
USE IEEE.std_logic_1164.ALL;
|
|
|
USE IEEE.numeric_std.ALL;
|
|
|
LIBRARY lpp;
|
|
|
USE lpp.lpp_memory.ALL;
|
|
|
USE lpp.iir_filter.ALL;
|
|
|
LIBRARY techmap;
|
|
|
USE techmap.gencomp.ALL;
|
|
|
|
|
|
ENTITY lppFIFOxN IS
|
|
|
GENERIC(
|
|
|
tech : INTEGER := 0;
|
|
|
Mem_use : INTEGER := use_RAM;
|
|
|
Data_sz : INTEGER RANGE 1 TO 32 := 8;
|
|
|
Addr_sz : INTEGER RANGE 2 TO 12 := 8;
|
|
|
FifoCnt : INTEGER := 1
|
|
|
);
|
|
|
PORT(
|
|
|
clk : IN STD_LOGIC;
|
|
|
rstn : IN STD_LOGIC;
|
|
|
|
|
|
ReUse : IN STD_LOGIC_VECTOR(FifoCnt-1 DOWNTO 0);
|
|
|
|
|
|
run : IN STD_LOGIC_VECTOR(FifoCnt-1 DOWNTO 0);
|
|
|
|
|
|
wen : IN STD_LOGIC_VECTOR(FifoCnt-1 DOWNTO 0);
|
|
|
wdata : IN STD_LOGIC_VECTOR((FifoCnt*Data_sz)-1 DOWNTO 0);
|
|
|
|
|
|
ren : IN STD_LOGIC_VECTOR(FifoCnt-1 DOWNTO 0);
|
|
|
rdata : OUT STD_LOGIC_VECTOR((FifoCnt*Data_sz)-1 DOWNTO 0);
|
|
|
|
|
|
empty : OUT STD_LOGIC_VECTOR(FifoCnt-1 DOWNTO 0);
|
|
|
full : OUT STD_LOGIC_VECTOR(FifoCnt-1 DOWNTO 0);
|
|
|
almost_full : OUT STD_LOGIC_VECTOR(FifoCnt-1 DOWNTO 0)
|
|
|
);
|
|
|
END ENTITY;
|
|
|
|
|
|
|
|
|
ARCHITECTURE ar_lppFIFOxN OF lppFIFOxN IS
|
|
|
|
|
|
BEGIN
|
|
|
|
|
|
fifos : FOR i IN 0 TO FifoCnt-1 GENERATE
|
|
|
lpp_fifo_1: lpp_fifo
|
|
|
GENERIC MAP (
|
|
|
tech => tech,
|
|
|
Mem_use => Mem_use,
|
|
|
EMPTY_THRESHOLD_LIMIT => 1,
|
|
|
FULL_THRESHOLD_LIMIT => 1,
|
|
|
DataSz => Data_sz,
|
|
|
AddrSz => Addr_sz)
|
|
|
PORT MAP (
|
|
|
clk => clk,
|
|
|
rstn => rstn,
|
|
|
reUse => reUse(I),
|
|
|
run => run(I),
|
|
|
ren => ren(I),
|
|
|
rdata => rdata( ((I+1)*Data_sz)-1 DOWNTO (I*Data_sz) ),
|
|
|
wen => wen(I),
|
|
|
wdata => wdata(((I+1)*Data_sz)-1 DOWNTO (I*Data_sz)),
|
|
|
empty => empty(I),
|
|
|
full => full(I),
|
|
|
full_almost => almost_full(I),
|
|
|
empty_threshold => OPEN,
|
|
|
full_threshold => OPEN
|
|
|
);
|
|
|
END GENERATE;
|
|
|
|
|
|
END ARCHITECTURE;
|
|
|
|
