User`s manual

19 // that are encoded within the stream, in YCrCb format.

21 // Make sure that the adv7185 is set to run in 16-bit LLC2 mode.

23 module ntsc_decode(clk, reset, tv_in_ycrcb, ycrcb, f, v, h, data_valid);

25 // clk - line-locked clock (in this case, LLC1 which runs at 27Mhz)

26 // reset - system reset

27 // tv_in_ycrcb - 10-bit input from chip. should map to pins [19:10]

28 // ycrcb - 24 bit luminance and chrominance (8 bits each)

29 // f - field: 1 indicates an even field, 0 an odd field

30 // v - vertical sync: 1 means vertical sync

31 // h - horizontal sync: 1 means horizontal sync

33 input clk;

34 input reset;

35 input [9:0] tv_in_ycrcb; // modified for 10 bit input - should be P[19:10]

36 output [29:0] ycrcb;

37 output f;

38 output v;

39 output h;

40 output data_valid;

41 // output [4:0] state;

43 parameter SYNC_1 = 0;

44 parameter SYNC_2 = 1;

45 parameter SYNC_3 = 2;

46 parameter SAV_f1_cb0 = 3;

47 parameter SAV_f1_y0 = 4;

48 parameter SAV_f1_cr1 = 5;

49 parameter SAV_f1_y1 = 6;

50 parameter EAV_f1 = 7;

51 parameter SAV_VBI_f1 = 8;

52 parameter EAV_VBI_f1 = 9;

53 parameter SAV_f2_cb0 = 10;

54 parameter SAV_f2_y0 = 11;

55 parameter SAV_f2_cr1 = 12;

56 parameter SAV_f2_y1 = 13;

57 parameter EAV_f2 = 14;

58 parameter SAV_VBI_f2 = 15;

59 parameter EAV_VBI_f2 = 16;

64 // In the start state, the module doesn’t know where