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/*
* 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_MS__SDFBBN_BEHAVIORAL_V
`define SKY130_FD_SC_MS__SDFBBN_BEHAVIORAL_V
/**
* sdfbbn: Scan delay flop, inverted set, inverted reset, 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_ms__udp_mux_2to1.v"
`include "../../models/udp_dff_nsr_pp_pg_n/sky130_fd_sc_ms__udp_dff_nsr_pp_pg_n.v"
`celldefine
module sky130_fd_sc_ms__sdfbbn (
Q ,
Q_N ,
D ,
SCD ,
SCE ,
CLK_N ,
SET_B ,
RESET_B
);
// Module ports
output Q ;
output Q_N ;
input D ;
input SCD ;
input SCE ;
input CLK_N ;
input SET_B ;
input RESET_B;
// Module supplies
supply1 VPWR;
supply0 VGND;
supply1 VPB ;
supply0 VNB ;
// Local signals
wire RESET ;
wire SET ;
wire CLK ;
wire buf_Q ;
reg notifier ;
wire D_delayed ;
wire SCD_delayed ;
wire SCE_delayed ;
wire CLK_N_delayed ;
wire SET_B_delayed ;
wire RESET_B_delayed;
wire mux_out ;
wire awake ;
wire cond0 ;
wire cond1 ;
wire condb ;
wire cond_D ;
wire cond_SCD ;
wire cond_SCE ;
// Name Output Other arguments
not not0 (RESET , RESET_B_delayed );
not not1 (SET , SET_B_delayed );
not not2 (CLK , CLK_N_delayed );
sky130_fd_sc_ms__udp_mux_2to1 mux_2to10 (mux_out, D_delayed, SCD_delayed, SCE_delayed );
sky130_fd_sc_ms__udp_dff$NSR_pp$PG$N dff0 (buf_Q , SET, RESET, CLK, mux_out, notifier, VPWR, VGND);
assign awake = ( VPWR === 1'b1 );
assign cond0 = ( awake && ( RESET_B_delayed === 1'b1 ) );
assign cond1 = ( awake && ( SET_B_delayed === 1'b1 ) );
assign condb = ( cond0 & cond1 );
assign cond_D = ( ( SCE_delayed === 1'b0 ) && condb );
assign cond_SCD = ( ( SCE_delayed === 1'b1 ) && condb );
assign cond_SCE = ( ( D_delayed !== SCD_delayed ) && condb );
buf buf0 (Q , buf_Q );
not not3 (Q_N , buf_Q );
endmodule
`endcelldefine
`default_nettype wire
`endif // SKY130_FD_SC_MS__SDFBBN_BEHAVIORAL_V