| // SPDX-FileCopyrightText: 2022 RIOSLab |
| // |
| // 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. |
| // |
| // SPDX-License-Identifier: Apache-2.0 |
| |
| module std_dffe |
| #( |
| parameter WIDTH = 8 |
| ) |
| ( |
| input clk, |
| input en, |
| input [WIDTH-1:0] d, |
| output [WIDTH-1:0] q |
| ); |
| |
| reg [WIDTH-1:0] dff_q; |
| |
| always @(posedge clk) begin |
| if(en | ~en) begin |
| dff_q <= d; |
| end |
| end |
| assign q = en ? dff_q: |
| '0; |
| |
| endmodule |
