feat(top): new (de)scrambler, crc16

2024-08-13 22:07:58 +08:00
parent a4eb609aae
commit 5e8d69a0b0
13 changed files with 766 additions and 90 deletions
@@ -0,0 +1,53 @@
+`timescale 1ns / 1ns
+module tb_scrambler ();
+
+
+    reg clk = 0;
+    always #1 clk <= ~clk;
+    reg [3:0] cnt_startup = 0;
+    reg       rst;
+
+    always @(posedge clk) begin
+        if (cnt_startup < 4'hF) begin
+            cnt_startup <= cnt_startup + 1;
+        end
+        rst <= cnt_startup <= 4'hC;
+    end
+
+
+    reg  [31:0] s_axis_tdata;
+    reg         s_axis_tvalid;
+    wire        s_axis_tready;
+    reg         s_axis_tlast;
+    wire [31:0] m_axis_tdata;
+    wire        m_axis_tvalid;
+    // wire        m_axis_tvalid;
+    wire        m_axis_tlast;
+    reg  [31:0] cnt = 0;
+
+    always @(posedge clk) begin
+        s_axis_tvalid <= (cnt_startup == 4'hF && cnt < 32);
+        if (rst) begin
+            s_axis_tdata <= 0;
+        end
+        else if (s_axis_tready && cnt < 32) begin
+            s_axis_tdata <= cnt;
+            cnt          <= cnt + 1;
+        end
+    end
+
+    scrambler u_scrambler (
+        .clk          (clk),
+        .rst          (rst),
+        .s_axis_tdata (s_axis_tdata),
+        .s_axis_tvalid(s_axis_tvalid),
+        .s_axis_tready(s_axis_tready),
+        .s_axis_tlast (s_axis_tlast),
+        .m_axis_tdata (m_axis_tdata),
+        .m_axis_tvalid(m_axis_tvalid),
+        .m_axis_tready(1),
+        .m_axis_tlast (m_axis_tlast)
+    );
+
+
+endmodule