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[/] [astron_multiplexer/] [trunk/] [common_multiplexer.vhd] - Rev 3
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------------------------------------------------------------------------------- -- -- Copyright 2020 -- ASTRON (Netherlands Institute for Radio Astronomy) <http://www.astron.nl/> -- P.O.Box 2, 7990 AA Dwingeloo, The Netherlands -- -- Licensed under the Apache License, Version 2.0 (the "License"); -- you may not use this file except in compliance with the License. -- You may obtain a copy of the License at -- -- http://www.apache.org/licenses/LICENSE-2.0 -- -- Unless required by applicable law or agreed to in writing, software -- distributed under the License is distributed on an "AS IS" BASIS, -- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -- See the License for the specific language governing permissions and -- limitations under the License. -- ------------------------------------------------------------------------------- LIBRARY IEEE, common_pkg_lib, common_components_lib; USE IEEE.STD_LOGIC_1164.ALL; USE common_pkg_lib.common_pkg.ALL; -- Purpose: Assign one of g_nof_in input streams to the output based on in_sel input -- Description: The input streams are concatenated into one SLV. -- Remarks: ENTITY common_multiplexer IS GENERIC ( g_pipeline_in : NATURAL := 0; g_pipeline_out : NATURAL := 0; g_nof_in : NATURAL; g_dat_w : NATURAL ); PORT ( clk : IN STD_LOGIC; rst : IN STD_LOGIC; in_sel : IN STD_LOGIC_VECTOR(ceil_log2(g_nof_in)-1 DOWNTO 0); in_dat : IN STD_LOGIC_VECTOR(g_nof_in*g_dat_w-1 DOWNTO 0); in_val : IN STD_LOGIC; out_dat : OUT STD_LOGIC_VECTOR(g_dat_w-1 DOWNTO 0); out_val : OUT STD_LOGIC ); END; ARCHITECTURE str OF common_multiplexer IS BEGIN u_select_symbol : ENTITY common_components_lib.common_select_symbol GENERIC MAP ( g_pipeline_in => g_pipeline_in, g_pipeline_out => g_pipeline_out, g_nof_symbols => g_nof_in, g_symbol_w => g_dat_w, g_sel_w => ceil_log2(g_nof_in) ) PORT MAP ( rst => rst, clk => clk, in_data => in_dat, in_val => in_val, in_sel => in_sel, out_symbol => out_dat, out_val => out_val ); END str;