| /* |
| * 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_LS__SEDFXBP_BEHAVIORAL_PP_V |
| `define SKY130_FD_SC_LS__SEDFXBP_BEHAVIORAL_PP_V |
| |
| /** |
| * sedfxbp: Scan delay flop, data enable, non-inverted clock, |
| * complementary outputs. |
| * |
| * Verilog simulation functional model. |
| */ |
| |
| `timescale 1ns / 1ps |
| `default_nettype none |
| |
| // Import user defined primitives. |
| `include "../../models/udp_mux_2to1/sky130_fd_sc_ls__udp_mux_2to1.v" |
| `include "../../models/udp_dff_p_pp_pg_n/sky130_fd_sc_ls__udp_dff_p_pp_pg_n.v" |
| |
| `celldefine |
| module sky130_fd_sc_ls__sedfxbp ( |
| Q , |
| Q_N , |
| CLK , |
| D , |
| DE , |
| SCD , |
| SCE , |
| VPWR, |
| VGND, |
| VPB , |
| VNB |
| ); |
| |
| // Module ports |
| output Q ; |
| output Q_N ; |
| input CLK ; |
| input D ; |
| input DE ; |
| input SCD ; |
| input SCE ; |
| input VPWR; |
| input VGND; |
| input VPB ; |
| input VNB ; |
| |
| // Local signals |
| wire buf_Q ; |
| reg notifier ; |
| wire D_delayed ; |
| wire DE_delayed ; |
| wire SCD_delayed; |
| wire SCE_delayed; |
| wire CLK_delayed; |
| wire mux_out ; |
| wire de_d ; |
| wire awake ; |
| wire cond1 ; |
| wire cond2 ; |
| wire cond3 ; |
| |
| // Name Output Other arguments |
| sky130_fd_sc_ls__udp_mux_2to1 mux_2to10 (mux_out, de_d, SCD_delayed, SCE_delayed ); |
| sky130_fd_sc_ls__udp_mux_2to1 mux_2to11 (de_d , buf_Q, D_delayed, DE_delayed ); |
| sky130_fd_sc_ls__udp_dff$P_pp$PG$N dff0 (buf_Q , mux_out, CLK_delayed, notifier, VPWR, VGND); |
| assign awake = ( VPWR === 1'b1 ); |
| assign cond1 = ( awake && ( SCE_delayed === 1'b0 ) && ( DE_delayed === 1'b1 ) ); |
| assign cond2 = ( awake && ( SCE_delayed === 1'b1 ) ); |
| assign cond3 = ( awake && ( DE_delayed === 1'b1 ) && ( D_delayed !== SCD_delayed ) ); |
| buf buf0 (Q , buf_Q ); |
| not not0 (Q_N , buf_Q ); |
| |
| endmodule |
| `endcelldefine |
| |
| `default_nettype wire |
| `endif // SKY130_FD_SC_LS__SEDFXBP_BEHAVIORAL_PP_V |