| // SPDX-FileCopyrightText: 2020 Muhammad Hadir Khan |
| // |
| // 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 |
| package primitives |
| import chisel3._ |
| |
| class FlopSynchronizer(width: Int, resetVal: UInt) extends Module { |
| val io = IO(new Bundle { |
| val d_in = Input(UInt(width.W)) |
| val q_out = Output(UInt(width.W)) |
| }) |
| |
| val reg1 = RegInit(resetVal) |
| val reg2 = RegInit(resetVal) |
| reg1 := io.d_in |
| reg2 := reg1 |
| io.q_out := reg2 |
| |
| } |
