| /* |
| * 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__DFRTN_BEHAVIORAL_V |
| `define SKY130_FD_SC_HS__DFRTN_BEHAVIORAL_V |
| |
| /** |
| * dfrtn: Delay flop, inverted reset, inverted clock, |
| * complementary outputs. |
| * |
| * Verilog simulation functional model. |
| */ |
| |
| `timescale 1ns / 1ps |
| `default_nettype none |
| |
| // Import sub cells. |
| `include "../u_df_p_r_no_pg/sky130_fd_sc_hs__u_df_p_r_no_pg.v" |
| |
| `celldefine |
| module sky130_fd_sc_hs__dfrtn ( |
| RESET_B, |
| CLK_N , |
| D , |
| Q , |
| VPWR , |
| VGND |
| ); |
| |
| // Module ports |
| input RESET_B; |
| input CLK_N ; |
| input D ; |
| output Q ; |
| input VPWR ; |
| input VGND ; |
| |
| // Local signals |
| wire buf_Q ; |
| wire RESET ; |
| wire intclk ; |
| reg notifier ; |
| wire D_delayed ; |
| wire RESET_B_delayed; |
| wire CLK_N_delayed ; |
| wire awake ; |
| wire cond0 ; |
| wire cond1 ; |
| |
| // Name Output Other arguments |
| not not0 (RESET , RESET_B_delayed ); |
| not not1 (intclk, CLK_N_delayed ); |
| sky130_fd_sc_hs__u_df_p_r_no_pg u_df_p_r_no_pg0 (buf_Q , D_delayed, intclk, RESET, notifier, VPWR, VGND); |
| assign awake = ( VPWR === 1'b1 ); |
| assign cond0 = ( awake && ( RESET_B_delayed === 1'b1 ) ); |
| assign cond1 = ( awake && ( RESET_B === 1'b1 ) ); |
| buf buf0 (Q , buf_Q ); |
| |
| endmodule |
| `endcelldefine |
| |
| `default_nettype wire |
| `endif // SKY130_FD_SC_HS__DFRTN_BEHAVIORAL_V |