| /***************************************************************************** |
| |
| Licensed to Accellera Systems Initiative Inc. (Accellera) under one or |
| more contributor license agreements. See the NOTICE file distributed |
| with this work for additional information regarding copyright ownership. |
| Accellera licenses this file to you 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. |
| |
| *****************************************************************************/ |
| |
| /***************************************************************************** |
| |
| biquad.h -- |
| |
| Original Author: Martin Janssen, Synopsys, Inc., 2002-02-15 |
| |
| *****************************************************************************/ |
| |
| /***************************************************************************** |
| |
| MODIFICATION LOG - modifiers, enter your name, affiliation, date and |
| changes you are making here. |
| |
| Name, Affiliation, Date: |
| Description of Modification: |
| |
| *****************************************************************************/ |
| |
| /* Filename biquad.h */ |
| /* This is the interface file for synchronous process `biquad' */ |
| |
| #include "systemc.h" |
| |
| SC_MODULE( biquad ) |
| { |
| SC_HAS_PROCESS( biquad ); |
| |
| sc_in_clk clk; |
| |
| sc_in<float> in; |
| sc_in<bool> reset; |
| sc_out<float> out; |
| |
| int num_taps; //internal variable |
| float Del[4]; //internal variable |
| float Cte[5]; //internal variable |
| |
| // Constructor |
| biquad( sc_module_name NAME, |
| sc_clock& CLK, |
| sc_signal<float>& IN1, |
| sc_signal<bool>& RESET, |
| sc_signal<float>& OUT1 ) |
| { |
| clk(CLK); |
| in(IN1); reset(RESET); out(OUT1); |
| SC_CTHREAD( entry, clk.pos() ); |
| reset_signal_is(reset,true); |
| // initialize the coefficient matrix |
| Cte[0] = 1.0; |
| Cte[1] = 2.0; |
| Cte[2] = 1.0; |
| Cte[3] = 0.75; |
| Cte[4] = -0.125; |
| Del[0] = Del[1] = Del[2] = Del[3] = 0.0; |
| } |
| |
| // Process functionality in member function below |
| void entry(); |
| }; |