题解 | #异步复位的串联T触发器#

`timescale 1ns/1ns
module Tff_2 (
input wire data, clk, rst,
output q  
);
//*************code***********//
    wire q1;
    TFF TFF_inst1(
        .data    (data), 
        .clk     (clk), 
        .rst     (rst),
        .q       (q1)      
    );
    
    TFF TFF_inst2(
        .data    (q1), 
        .clk     (clk), 
        .rst     (rst),
        .q       (q)      
    );    
    
    
//*************code***********//
endmodule

//T触发器设计
module TFF(
    input wire data, clk, rst,
    output reg q    
);
    always @(posedge clk or negedge rst)begin
        if(!rst)
            q <= 1'b0;
        else if(data == 1'b0)
            q <= q;
        else if(data == 1'b1)
            q <= ~q;     
    end
endmodule