cells/dlxtn/sky130_fd_sc_hdll__dlxtn.behavioral.pp.v

/*
 * 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_HDLL__DLXTN_BEHAVIORAL_PP_V
`define SKY130_FD_SC_HDLL__DLXTN_BEHAVIORAL_PP_V

/**
 * dlxtn: Delay latch, inverted enable, single output.
 *
 * Verilog simulation functional model.
 */

`timescale 1ns / 1ps
`default_nettype none

// Import user defined primitives.
`include "../../models/udp_dlatch_p_pp_pg_n/sky130_fd_sc_hdll__udp_dlatch_p_pp_pg_n.v"

`celldefine
module sky130_fd_sc_hdll__dlxtn (
    Q     ,
    D     ,
    GATE_N,
    VPWR  ,
    VGND  ,
    VPB   ,
    VNB
);

    // Module ports
    output Q     ;
    input  D     ;
    input  GATE_N;
    input  VPWR  ;
    input  VGND  ;
    input  VPB   ;
    input  VNB   ;

    // Local signals
    wire GATE          ;
    wire buf_Q         ;
    wire GATE_N_delayed;
    wire D_delayed     ;
    reg  notifier      ;
    wire awake         ;

    //                                      Name     Output  Other arguments
    not                                     not0    (GATE  , GATE_N_delayed                       );
    sky130_fd_sc_hdll__udp_dlatch$P_pp$PG$N dlatch0 (buf_Q , D_delayed, GATE, notifier, VPWR, VGND);
    buf                                     buf0    (Q     , buf_Q                                );
    assign awake = ( VPWR === 1'b1 );

endmodule
`endcelldefine

`default_nettype wire
`endif  // SKY130_FD_SC_HDLL__DLXTN_BEHAVIORAL_PP_V