题解 | #数据串转并电路#
数据串转并电路
http://www.nowcoder.com/practice/6134dc3c8d0741d08eb522542913583d
`timescale 1ns/1ns
module s_to_p(
input clk ,
input rst_n ,
input valid_a ,
input data_a ,
output reg ready_a ,
output reg valid_b ,
output reg [5:0] data_b
);
reg[2:0]cnt;
reg[5:0]b_reg;
always@(posedge clk or negedge rst_n)begin
if(!rst_n)begin
cnt<=3'b0;
b_reg<=6'b0;
end
else if(valid_a)begin
b_reg[cnt]<=data_a;
cnt<=cnt+1;
end
else begin
b_reg<=b_reg;
cnt<=cnt;
end
end
always@(posedge clk or negedge rst_n)begin
if(!rst_n)begin
ready_a<=1'b0;
valid_b<=1'b0;
data_b<=6'b0;
end
else begin
ready_a<=1'b1;
if(cnt==3'd5)begin
data_b<=b_reg;
valid_b<=1'b1;
cnt<=3'b0;
end
else begin
valid_b<=1'b0;
end
end
end
endmodule
module s_to_p(
input clk ,
input rst_n ,
input valid_a ,
input data_a ,
output reg ready_a ,
output reg valid_b ,
output reg [5:0] data_b
);
reg[2:0]cnt;
reg[5:0]b_reg;
always@(posedge clk or negedge rst_n)begin
if(!rst_n)begin
cnt<=3'b0;
b_reg<=6'b0;
end
else if(valid_a)begin
b_reg[cnt]<=data_a;
cnt<=cnt+1;
end
else begin
b_reg<=b_reg;
cnt<=cnt;
end
end
always@(posedge clk or negedge rst_n)begin
if(!rst_n)begin
ready_a<=1'b0;
valid_b<=1'b0;
data_b<=6'b0;
end
else begin
ready_a<=1'b1;
if(cnt==3'd5)begin
data_b<=b_reg;
valid_b<=1'b1;
cnt<=3'b0;
end
else begin
valid_b<=1'b0;
end
end
end
endmodule