| /** |
| * Copyright 2020 The SkyWater PDK Authors |
| * |
| * 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 |
| * |
| * https://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 |
| */ |
| |
| `ifndef SKY130_FD_SC_HS__DFBBN_TB_V |
| `define SKY130_FD_SC_HS__DFBBN_TB_V |
| |
| /** |
| * dfbbn: Delay flop, inverted set, inverted reset, inverted clock, |
| * complementary outputs. |
| * |
| * Autogenerated test bench. |
| * |
| * WARNING: This file is autogenerated, do not modify directly! |
| */ |
| |
| `timescale 1ns / 1ps |
| `default_nettype none |
| |
| `include "sky130_fd_sc_hs__dfbbn.v" |
| |
| module top(); |
| |
| // Inputs are registered |
| reg D; |
| reg SET_B; |
| reg RESET_B; |
| reg VPWR; |
| reg VGND; |
| |
| // Outputs are wires |
| wire Q; |
| wire Q_N; |
| |
| initial |
| begin |
| // Initial state is x for all inputs. |
| D = 1'bX; |
| RESET_B = 1'bX; |
| SET_B = 1'bX; |
| VGND = 1'bX; |
| VPWR = 1'bX; |
| |
| #20 D = 1'b0; |
| #40 RESET_B = 1'b0; |
| #60 SET_B = 1'b0; |
| #80 VGND = 1'b0; |
| #100 VPWR = 1'b0; |
| #120 D = 1'b1; |
| #140 RESET_B = 1'b1; |
| #160 SET_B = 1'b1; |
| #180 VGND = 1'b1; |
| #200 VPWR = 1'b1; |
| #220 D = 1'b0; |
| #240 RESET_B = 1'b0; |
| #260 SET_B = 1'b0; |
| #280 VGND = 1'b0; |
| #300 VPWR = 1'b0; |
| #320 VPWR = 1'b1; |
| #340 VGND = 1'b1; |
| #360 SET_B = 1'b1; |
| #380 RESET_B = 1'b1; |
| #400 D = 1'b1; |
| #420 VPWR = 1'bx; |
| #440 VGND = 1'bx; |
| #460 SET_B = 1'bx; |
| #480 RESET_B = 1'bx; |
| #500 D = 1'bx; |
| end |
| |
| // Create a clock |
| reg CLK_N; |
| initial |
| begin |
| CLK_N = 1'b0; |
| end |
| |
| always |
| begin |
| #5 CLK_N = ~CLK_N; |
| end |
| |
| sky130_fd_sc_hs__dfbbn dut (.D(D), .SET_B(SET_B), .RESET_B(RESET_B), .VPWR(VPWR), .VGND(VGND), .Q(Q), .Q_N(Q_N), .CLK_N(CLK_N)); |
| |
| endmodule |
| |
| `default_nettype wire |
| `endif // SKY130_FD_SC_HS__DFBBN_TB_V |