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[/] [csa/] [trunk/] [rtl/] [ts_sync.v] - Blame information for rev 49

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`include "../bench/timescale.v"
// this module probe the ts sync head,
 
module ts_sync(
               input                 clk
             , input                 rst
             , input                 en
             , input         [8-1:0] datain
             , output  reg           valid
             , output  reg           head     // find ts packet head
             , output  reg           init     // the first dec ts packet
             , output  reg           dec      // this ts group need decrypt
             , output  reg           evenodd  // the current key type
             , output  reg [8*8-1:0] group
             , output  reg     [3:0] bytes    // valid bytes in group
        );
        reg sync;
        reg need_dec; // current packet need decrypt;
        reg [8*8-1:0] group_d;
        reg [7:0] ts_cnt; // 
 
        always @(posedge clk)
                if(rst)
                begin
                        valid<=1'h0;
                        head<=1'h0;
                        dec<=1'h0;
                        sync<=1'h0;
                        need_dec<=1'h0;
                        ts_cnt<=8'h0;
                        init<=1'h0;
                end
                else
                begin
                        head<=1'h0;
                        dec<=1'h0;
                        valid<=1'h0;
                        init<=1'h0;
 
                        if(en)
                        begin
                                group_d <= {datain, group_d[8*8-1:1*8] };
                        end
                        if(sync)
                        begin
                                if(ts_cnt==8'h1&&en)
                                begin
                                        need_dec<=1'h0;
                                        sync<=1'h0; // ts packet end
 
                                end
                                if(ts_cnt[2:0]==3'h1&&en)
                                begin
                                        valid<=1'h1;
                                        dec<=need_dec;
                                        bytes<=4'h8;
                                        group   <={datain, group_d[8*8-1:1*8] } ;
 
                                end
                                if(ts_cnt==8'hb1&en)
                                        init<=1'h1;
                                if(en)
                                        ts_cnt <= ts_cnt - 8'h1;
                        end
                        if(en)
                        begin
                                if(group_d[6*8-1:5*8]==8'h47)
                                begin
                                        sync<=1'h1;
                                        valid<=1'h1;
                                        head<=1'h1;
                                        bytes<=4'h4;
                                        group <= {32'h000,1'h0,datain[6:0],group_d[8*8-1:5*8]};
                                        evenodd <= datain[6];
                                        need_dec<=datain[7];
                                        ts_cnt <= 8'hb8;
                                end
                        end
                end
endmodule

Line No.	Rev	Author	Line
1	41	simon111
2			`include "../bench/timescale.v"
3			`// this module probe the ts sync head,`
4
5			`module ts_sync(`
6			`input clk`
7			`, input rst`
8			`, input en`
9			`, input [8-1:0] datain`
10			`, output reg valid`
11			`, output reg head // find ts packet head`
12	42	simon111	`, output reg init // the first dec ts packet`
13	41	simon111	`, output reg dec // this ts group need decrypt`
14			`, output reg evenodd // the current key type`
15			`, output reg [8*8-1:0] group`
16			`, output reg [3:0] bytes // valid bytes in group`
17			`);`
18			`reg sync;`
19			`reg need_dec; // current packet need decrypt;`
20			`reg [8*8-1:0] group_d;`
21			`reg [7:0] ts_cnt; //`
22	42	simon111
23	41	simon111	`always @(posedge clk)`
24			`if(rst)`
25			`begin`
26			`valid<=1'h0;`
27			`head<=1'h0;`
28			`dec<=1'h0;`
29			`sync<=1'h0;`
30			`need_dec<=1'h0;`
31	44	simon111	`ts_cnt<=8'h0;`
32	42	simon111	`init<=1'h0;`
33	41	simon111	`end`
34			`else`
35			`begin`
36			`head<=1'h0;`
37			`dec<=1'h0;`
38	42	simon111	`valid<=1'h0;`
39			`init<=1'h0;`
40	41	simon111
41			`if(en)`
42			`begin`
43			`group_d <= {datain, group_d[88-1:18] };`
44			`end`
45			`if(sync)`
46			`begin`
47			`if(ts_cnt==8'h1&&en)`
48			`begin`
49			`need_dec<=1'h0;`
50			`sync<=1'h0; // ts packet end`
51	42	simon111
52	41	simon111	`end`
53			`if(ts_cnt[2:0]==3'h1&&en)`
54			`begin`
55	42	simon111	`valid<=1'h1;`
56	41	simon111	`dec<=need_dec;`
57			`bytes<=4'h8;`
58	42	simon111	`group <={datain, group_d[88-1:18] } ;`
59
60	41	simon111	`end`
61	42	simon111	`if(ts_cnt==8'hb1&en)`
62			`init<=1'h1;`
63	41	simon111	`if(en)`
64			`ts_cnt <= ts_cnt - 8'h1;`
65			`end`
66			`if(en)`
67			`begin`
68			`if(group_d[68-1:58]==8'h47)`
69			`begin`
70			`sync<=1'h1;`
71			`valid<=1'h1;`
72			`head<=1'h1;`
73	44	simon111	`bytes<=4'h4;`
74	41	simon111	`group <= {32'h000,1'h0,datain[6:0],group_d[88-1:58]};`
75			`evenodd <= datain[6];`
76			`need_dec<=datain[7];`
77			`ts_cnt <= 8'hb8;`
78			`end`
79			`end`
80			`end`
81			`endmodule`

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[/] [csa/] [trunk/] [rtl/] [ts_sync.v] - Blame information for rev 49