diff options
Diffstat (limited to 'fpga/hw-v2/src/mt_filter/mt_filter.vhd')
| -rw-r--r-- | fpga/hw-v2/src/mt_filter/mt_filter.vhd | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/fpga/hw-v2/src/mt_filter/mt_filter.vhd b/fpga/hw-v2/src/mt_filter/mt_filter.vhd new file mode 100644 index 0000000..bfdbdb4 --- /dev/null +++ b/fpga/hw-v2/src/mt_filter/mt_filter.vhd @@ -0,0 +1,46 @@ +---------------------------------------------------------------------------------------------------
+-- Filename : mt_filter.vhd
+-- Project : maintech filter toolbox
+-- Purpose : maintech filter toolbox package
+--
+-- Description : declaration of common types, functions and attributes
+-- used throughout the filter toolbox
+---------------------------------------------------------------------------------------------------
+
+-----------------------------------------------------------------------------------
+-- Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany --
+-- written by Matthias Kleffel --
+-- --
+-- 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 as version 3 of the License, or --
+-- --
+-- 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 V3 for more details. --
+-- --
+-- You should have received a copy of the GNU General Public License --
+-- along with this program. If not, see <http://www.gnu.org/licenses/>. --
+-----------------------------------------------------------------------------------
+
+library ieee;
+ use ieee.std_logic_1164.all;
+ use ieee.numeric_std.all;
+
+package mt_filter is
+
+ --
+ -- FIR filter types
+ --
+ subtype fir_dataword18 is signed(17 downto 0);
+ type fir_databus18 is array (natural range <>) of fir_dataword18;
+ subtype fir_coefficient is integer range -2**17 to 2**17-1;
+ type fir_coefficients is array (natural range <>) of fir_coefficient;
+
+end mt_filter;
+
+package body mt_filter is
+ -- nothing so far
+end mt_filter;
+
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