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为了采集模拟摄像头的数据用FPGA进行算法处理及显示,需要先将其输出的串行模拟信号变为并行的数字信号,采样TVP5150解码芯片的目的正是如此。本文主要利用FPGA模拟I2C总线对TVP5150进行配置,使其工作在需要的状态下,输出BT656格式Ycbcr数据流。


TVP5150系列是一颗使用简易、超低功耗、封装极小的数字视频解码器。使用单一14.318MHz时钟就可以实现PAL/NTSC/SECAM各种制式的解码,输出8bit BT.656数据,也可以输出分离同步。通过标准的I2C接口控制TVP内部的诸多参数,比如色调、对比度、亮度、饱和度和锐度等等。TVP5150内部的VBI处理器可以分离解析出VBIVertical Blanking Interval)里面的teletextclosed caption等等信息。

下面是工程的系统方框图:


由于是用I2C总线配置的,所以首先得写好I2C模块。注意此处的应答信号一定要有,在这个上面我就吃了大亏,用之前配置EPPROM的I2C模块对TVP5150配置,花了三天都出不来数据,最后还是重新写了I2C模块。



`timescale 1ns/100ps
module I2C_write_controler(
														input	      clk_50K		  ,
														input       reset_l		  ,
														input[23:0] I2C_DATA    ,//data[slave_addr,sub_addr,data]
														input       I2C_start	  ,//I2C initiate signal
														output reg  I2C_SCL	    ,//I2C clock
														output 		  I2C_done	  ,//12C transfor finished
														inout       I2C_SDA			,//I2C data
														output      ACK 
													);
//*****************State Parameter*************
parameter STATE_IDLE				=	9'b000000001,
					STATE_START 			=	9'b000000010,
					STATE_SLAVE_ADDR	=	9'b000000100,
					STATE_ACK_1       =	9'b000001000,
					STATE_SUB_ADDR    =	9'b000010000,
					STATE_ACK_2       =	9'b000100000,
					STATE_DATA				= 9'b001000000,
					STATE_ACK_3       = 9'b010000000,
					STATE_STOP 				= 9'b100000000;
					
//*********************************************	
reg     I2C_SDA_out    ;
reg    I2C_SDA_out_en  ;
assign  I2C_SDA = I2C_SDA_out_en ? I2C_SDA_out : 1'bz ;
//***********ACK signal for test***************
reg 	ACK_1  ;
reg   ACK_2  ;
reg   ACK_3  ;
assign  ACK = ACK_1 | ACK_2 | ACK_3  ;

					
//**************Internal Registers/Wires*******					
reg [4:0]	state_start_cnt				;
reg [4:0] state_slave_addr_cnt	;
reg [4:0]	state_sub_addr_cnt    ;
reg [4:0] state_data_cnt				;
reg [4:0] state_stop_cnt        ;
reg [4:0] state_ack_1_cnt       ;
reg [4:0] state_ack_2_cnt       ;
reg [4:0] state_ack_3_cnt       ;
reg  state_start_done      ;
reg  state_slave_addr_done ;
reg  state_ack_1_done      ;
reg  state_sub_addr_done   ;
reg  state_ack_2_done      ;
reg  state_data_done			 ;
reg  state_ack_3_done      ;
reg  state_stop_done       ;

//**********************************************
assign I2C_done = state_stop_done ;

//**************State Registers*****************
reg [8:0]	current_state	;
reg [8:0] next_state    ;

always @ (posedge clk_50K or negedge reset_l)
begin
	if(!reset_l)begin
		current_state <= STATE_IDLE	;
	end
	else begin
		current_state <= next_state ;
	end
end

//************State Transfer******************
always @ (*)
begin
	case(current_state)
		STATE_IDLE : begin
								 		if( I2C_start == 1'b1 )begin
								 			next_state <= STATE_START ;
								 		end
								 		else begin
								 			next_state <= STATE_IDLE  ;
								 		end
								 end
	  STATE_START : begin
	  									if( state_start_done == 1'b1 )begin
	  										next_state <= STATE_SLAVE_ADDR ;
	  									end
	  									else begin
	  										next_state <= STATE_START ;
	  									end
	  							end
	  
	  STATE_SLAVE_ADDR : begin
	  									 		if( state_slave_addr_done == 1'b1 )begin
	  									 			next_state <= STATE_ACK_1 ;
	  									 		end
	  									 		else begin
	  									 			next_state <= STATE_SLAVE_ADDR ;
	  									 		end
	  									 end	
	  STATE_ACK_1 : begin
	  									 		if( state_ack_1_done == 1'b1 )begin
	  									 			next_state <= STATE_SUB_ADDR ;
	  									 		end
	  									 		else begin
	  									 			next_state <= STATE_ACK_1 ;
	  									 		end
	  									 end							
	  STATE_SUB_ADDR : begin
	  									 		if( state_sub_addr_done == 1'b1 )begin
	  									 			next_state <= STATE_ACK_2 ;
	  									 		end
	  									 		else begin
	  									 			next_state <= STATE_SUB_ADDR ;
	  									 		end
	  									 end							
	  									 
	  STATE_ACK_2 : begin
	  									 		if( state_ack_2_done == 1'b1 )begin
	  									 			next_state <= STATE_DATA ;
	  									 		end
	  									 		else begin
	  									 			next_state <= STATE_ACK_2 ;
	  									 		end
	  									 end							
	  STATE_DATA : begin
	  									 		if( state_data_done == 1'b1 )begin
	  									 			next_state <= STATE_ACK_3 ;
	  									 		end
	  									 		else begin
	  									 			next_state <= STATE_DATA ;
	  									 		end
	  									 end	
	  STATE_ACK_3 : begin
	  									 		if( state_ack_3_done == 1'b1 )begin
	  									 			next_state <= STATE_STOP ;
	  									 		end
	  									 		else begin
	  									 			next_state <= STATE_ACK_3 ;
	  									 		end
	  									 end				
	  STATE_STOP : begin
	  									 		if( state_stop_done == 1'b1 )begin
	  									 			next_state <= STATE_IDLE ;
	  									 		end
	  									 		else begin
	  									 			next_state <= STATE_STOP ;
	  									 		end
	  									 end				 									 															 
	  									 
	     default : begin
	  						 		next_state <= STATE_IDLE ;
	  						 end		
	  endcase  						 	  									 									 						
end


//************State Output********************
always @ (posedge clk_50K or negedge reset_l)
begin
	if(!reset_l)begin
		state_start_done 			<= 1'b0 ;
		state_slave_addr_done <= 1'b0 ;
		state_ack_1_done			<= 1'b0 ;
		state_sub_addr_done   <= 1'b0 ;
		state_ack_2_done      <= 1'b0 ;
		state_data_done       <= 1'b0 ;
		state_ack_3_done			<= 1'b0 ;
		state_stop_done				<= 1'b0 ;
		state_start_cnt				<= 5'b0 ;
		state_slave_addr_cnt  <= 5'b0 ;
		state_sub_addr_cnt    <= 5'b0 ;
		state_data_cnt        <= 5'b0 ;
		state_stop_cnt				<= 5'b0 ;
		state_ack_1_cnt       <= 5'b0 ;
		state_ack_2_cnt 			<= 5'b0 ;
		state_ack_3_cnt 			<= 5'b0 ;
		I2C_SDA_out           <= 1'b1 ;
		I2C_SCL               <= 1'b1 ;
		I2C_SDA_out_en        <= 1'b0 ;
		ACK_1                 <= 1'b1 ;
		ACK_2                 <= 1'b1 ;
		ACK_3                 <= 1'b1 ;
	end
	else begin
		case(current_state)
			STATE_START: begin
									 	if(state_start_cnt <= 5'd4)begin
									 		state_start_cnt <= state_start_cnt + 1'b1 ;
									 	end	
									 	state_start_done <= 1'b0   ;
									 	I2C_SDA_out_en <= 1'b1				 ;//Set I2C_SDA As output
									 	case(state_start_cnt)
									 	  0 : begin ACK_1 <= 1'b1 ;
										            ACK_2 <= 1'b1 ;
										            ACK_3 <= 1'b1 ;
										      end
									 		1 : I2C_SCL <= 1'b1          ;
									 		2 : I2C_SDA_out <= 1'b1      ;									 		
									 		3 : I2C_SDA_out <= 1'b0      ;	
									 		4 :state_start_done <= 1'b1  ;									 		
									 	  default : ;
									 	endcase
									 end
      STATE_SLAVE_ADDR : begin
		  									 	if(state_slave_addr_cnt <= 5'd26)begin
		  									 		state_slave_addr_cnt <= state_slave_addr_cnt + 1'b1 ;
		  									 	end
		  									 	state_slave_addr_done <= 1'b0 ;
		  									 	case(state_slave_addr_cnt)
		  									 		0 : I2C_SCL <= 1'b0       				 ;
		  									 		1 : I2C_SDA_out <= I2C_DATA[23]		 ;
		  									 		2 : I2C_SCL <= 1'b1       				 ;
		  									 		3 : I2C_SCL <= 1'b0       				 ;
		  									 		4 : I2C_SDA_out <= I2C_DATA[22]		 ;
		  									 		5 : I2C_SCL <= 1'b1       				 ;
		  									 		6 : I2C_SCL <= 1'b0       				 ;
		  									 		7 : I2C_SDA_out <= I2C_DATA[21]		 ;
		  									 		8 : I2C_SCL <= 1'b1       				 ;
		  									 		9 : I2C_SCL <= 1'b0       				 ;
		  									 	 10 : I2C_SDA_out <= I2C_DATA[20]		 ;
		  									 	 11 : I2C_SCL <= 1'b1       				 ;
		  									 	 12 : I2C_SCL <= 1'b0       				 ;
		  									 	 13 : I2C_SDA_out <= I2C_DATA[19]		 ;
		  									 	 14 : I2C_SCL <= 1'b1       				 ;
		  									 	 15 : I2C_SCL <= 1'b0       				 ;
		  									 	 16 : I2C_SDA_out <= I2C_DATA[18]		 ;
		  									 	 17 : I2C_SCL <= 1'b1       				 ;
		  									 	 18 : I2C_SCL <= 1'b0       				 ;
		  									 	 19 : I2C_SDA_out <= I2C_DATA[17]		 ;
		  									 	 20 : I2C_SCL <= 1'b1       				 ;
		  									 	 21 : I2C_SCL <= 1'b0       				 ;
		  									 	 22 : I2C_SDA_out <= I2C_DATA[16]		 ;
		  									 	 23 : I2C_SCL <= 1'b1       				 ;
		  									 	 24 : I2C_SCL <= 1'b0       				 ;
		  									   25 : I2C_SDA_out <= 1'b1            ;//free the bus	
		  									   26 : state_slave_addr_done <= 1'b1 ;	  									   
		  									 	 default: begin
		  									 	 						state_slave_addr_done <= 1'b1 ;
		  									 	 						I2C_SDA_out_en        <= 1'b0 ;//Set I2C_SDA as input,accept ack signal
		  									 	 					end
		  									 	endcase
		  									 end
      STATE_ACK_1 : begin
      								if(state_ack_1_cnt <= 5'd3)begin
      									state_ack_1_cnt <= state_ack_1_cnt + 1'b1 ;
      								end
      								state_ack_1_done <= 1'b0   ;
      								 case(state_ack_1_cnt)
      									0 : ACK_1   <= I2C_SDA   ;
      									1 : I2C_SCL <= 1'b1      ;      									
      									2 : I2C_SCL <= 1'b0      ;  
      									3 :state_ack_1_done <= 1'b1  ; 
      									default : begin					
      															I2C_SDA_out_en   <= 1'b1  ;
      														end
      								endcase
      							end
      STATE_SUB_ADDR : begin
      								   if(state_sub_addr_cnt <= 5'd25)begin
      								   	 	state_sub_addr_cnt <= state_sub_addr_cnt +1'b1 ;
      								   end
      								   state_sub_addr_done <= 1'b0 ;
      								   case(state_sub_addr_cnt)
		  									 		0 : I2C_SDA_out <= I2C_DATA[15]		 ;
		  									 		1 : I2C_SCL <= 1'b1       				 ;
		  									 		2 : I2C_SCL <= 1'b0       				 ;
		  									 		3 : I2C_SDA_out <= I2C_DATA[14]		 ;
		  									 		4 : I2C_SCL <= 1'b1       				 ;
		  									 		5 : I2C_SCL <= 1'b0       				 ;
		  									 		6 : I2C_SDA_out <= I2C_DATA[13]		 ;
		  									 		7 : I2C_SCL <= 1'b1       				 ;
		  									 		8 : I2C_SCL <= 1'b0       				 ;
		  									 		9 : I2C_SDA_out <= I2C_DATA[12]		 ;
		  									 	  10: I2C_SCL <= 1'b1       				 ;
		  									 	  11: I2C_SCL <= 1'b0       				 ;
		  									 		12: I2C_SDA_out <= I2C_DATA[11]		 ;
		  									 		13: I2C_SCL <= 1'b1       				 ;
		  									 		14: I2C_SCL <= 1'b0       				 ;
		  									 		15: I2C_SDA_out <= I2C_DATA[10]		 ;
		  									 		16: I2C_SCL <= 1'b1       				 ;
		  									 		17: I2C_SCL <= 1'b0       				 ;
		  									 		18: I2C_SDA_out <= I2C_DATA[9]		 ;
		  									 		19: I2C_SCL <= 1'b1       				 ;
		  									 		20: I2C_SCL <= 1'b0       				 ;
		  									 		21: I2C_SDA_out <= I2C_DATA[8]		 ;
		  									 		22: I2C_SCL <= 1'b1       				 ;
		  									 		23: I2C_SCL <= 1'b0       				 ;
		  					          	24: I2C_SDA_out <= 1'b1            ;//free the bus	
		  					          	25: state_sub_addr_done <= 1'b1 ;	  					          	
		  									 	 default: begin
		  									 	 						I2C_SDA_out_en      <= 1'b0 ;//Set I2C_SDA as input,accept ack signal
		  									 	 					end
		  									 	endcase
      								 end		
      STATE_ACK_2: begin
      								if(state_ack_2_cnt <= 5'd3)begin
      									state_ack_2_cnt <= state_ack_2_cnt + 1'b1 ;
      								end
      								state_ack_2_done <= 1'b0  ;
      								case(state_ack_2_cnt)
      									0 : ACK_2   <= I2C_SDA   ;
      									1 : I2C_SCL <= 1'b1      ;      									
      									2 : I2C_SCL <= 1'b0      ; 
      									3 :state_ack_2_done <= 1'b1  ;  
      									default : begin						
      															I2C_SDA_out_en   <= 1'b1  ;
      														end
      								endcase
      							end            								 
      STATE_DATA :  begin
      							 if(state_data_cnt <= 5'd25)begin
      								  state_data_cnt <= state_data_cnt +1'b1 ;
      						  end
      						  state_data_done <= 1'b0 ;
      								case(state_data_cnt)
		  									  0  : I2C_SDA_out <= I2C_DATA[7]		 ;
		  										1  : I2C_SCL <= 1'b1       				 ;
		  										2  : I2C_SCL <= 1'b0       				 ;
		  										3  : I2C_SDA_out <= I2C_DATA[6]		 ;
		  										4  : I2C_SCL <= 1'b1       				 ;
		  										5  : I2C_SCL <= 1'b0       				 ;
		  										6  : I2C_SDA_out <= I2C_DATA[5]		 ;
		  										7  : I2C_SCL <= 1'b1       				 ;
		  										8  : I2C_SCL <= 1'b0       				 ;
		  									  9  : I2C_SDA_out <= I2C_DATA[4]		 ;
		  									  10 : I2C_SCL <= 1'b1       				 ;
		  									  11 : I2C_SCL <= 1'b0       				 ;
		  									  12 : I2C_SDA_out <= I2C_DATA[3]		 ;
		  									  13 : I2C_SCL <= 1'b1       				 ;
		  									  14 : I2C_SCL <= 1'b0       				 ;
		  									  15 : I2C_SDA_out <= I2C_DATA[2]		 ;
		  									  16 : I2C_SCL <= 1'b1       				 ;
		  									  17 : I2C_SCL <= 1'b0       				 ;
		  									  18 : I2C_SDA_out <= I2C_DATA[1]		 ;
		  									  19 : I2C_SCL <= 1'b1       				 ;
		  									  20 : I2C_SCL <= 1'b0       				 ;
		  									  21 : I2C_SDA_out <= I2C_DATA[0]		 ;
		  									  22 : I2C_SCL <= 1'b1       				 ;
		  									  23 : I2C_SCL <= 1'b0       				 ;
		  					          24 : I2C_SDA_out <= 1'b1            ;//free the bus		
		  					          25 : state_data_done <= 1'b1 ;  					         
		  									 default: begin	
		  									 	 				I2C_SDA_out_en  <= 1'b0 ;//Set I2C_SDA as input,accept ack signal
		  									 	 			end
		  								endcase
      							end		
      STATE_ACK_3 : begin
      								if(state_ack_3_cnt <= 5'd3)begin
      									state_ack_3_cnt <= state_ack_3_cnt + 1'b1 ;
      								end
      								state_ack_3_done <= 1'b0  ;
      								 case(state_ack_3_cnt)
      									0 : ACK_3   <= I2C_SDA   ;
      									1 : I2C_SCL <= 1'b1      ;  
      									2 : I2C_SCL <= 1'b0      ; 
      									3 : state_ack_3_done <= 1'b1  ;    									
      									default : begin      															
      															I2C_SDA_out_en   <= 1'b1  ;
      														end
      								endcase
      							end   
      STATE_STOP : begin
      						   if(state_stop_cnt <= 5'd3 )begin
      						   		state_stop_cnt <= state_stop_cnt +1'b1 ;
      						   end
      						   state_stop_done <= 1'b0 ;
      						   case(state_stop_cnt)
      						   		0 : I2C_SDA_out <= 1'b0 ;
      						   		1 : I2C_SCL     <= 1'b1 ;
      						   		2 : I2C_SDA_out <= 1'b1 ;
      						   		3 : state_stop_done <= 1'b1 ;
      						      default : ;
      						   endcase
      						 end	
      default : begin
      						state_start_cnt			    <=  5'd0   ;
									state_slave_addr_cnt    <=  5'd0   ;
									state_sub_addr_cnt      <=  5'd0   ;
									state_data_cnt		 <=  5'd0   ;
									state_stop_cnt          <=  5'd0   ;
									state_ack_1_cnt         <=  5'd0   ;
									state_ack_2_cnt         <=  5'd0   ;
									state_ack_3_cnt         <=  5'd0   ;							
      					end 	
      endcase								 
		  									 					 
	end
end
						
endmodule
(代码在UE里写的,为什么黏贴到这里格式这么难看?希望有好心人能告诉我怎么办!)
I2C模块写好了,剩下的就是进行配置了。看了datasheet会发现,TVP5150有一百多个寄存器需要配置。由于比较懒,没有细看datasheet,在网上看了些资料说只用配置某些寄存器即可,于是按照上面来配,发现还是不行(可能是我配的不对)。又是这样花了两天时间,最后实在没有办法,按照网上一个人的方法,把每个寄存器都配一遍。最后终于出数据了。



`timescale 1ns/100ps
module TVP5150_ctrl(
											input    clk_1m       ,//**1M hz
											input    reset_l      ,
											output   I2C_SCL      ,
											inout    I2C_SDA      
										//**For Test
										//  input [7:0] Y_out     ,
										//  input    pclk         ,
										//  input    vsync        ,
										//  input    hsync    										  
										);
										
//*****************State Parameter*************
parameter STATE_TRANSFOR_START		=	3'b001  ,
					STATE_WAIT_ACK 		      =	3'b010  ,
					STATE_REG_OFFSET        =	3'b100  ;
	

//**********internal wires/regs******************
wire [23:0]	I2C_DATA	 ;
wire    I2C_start      ;
wire    I2C_done       ;

reg  [23:0] I2C_DATA_R          ;
reg      I2C_start_r            ;

assign  I2C_start = I2C_start_r ;
assign  I2C_DATA  = I2C_DATA_R  ;


//*********** I2C Clock generate *************
reg        clk_5Khz	    ;
reg [15:0] clk_5Khz_cnt ;

always @ (posedge clk_1m or negedge reset_l)
begin
	if(!reset_l)begin
		clk_5Khz <= 1'b0 ;
		clk_5Khz_cnt <= 16'd0 ;
	end
	else begin
		if(clk_5Khz_cnt < 16'd100)begin
			clk_5Khz_cnt <= clk_5Khz_cnt +1'b1 ;
		end
		else begin
			clk_5Khz_cnt <= 16'd0 ;
				clk_5Khz <= ~clk_5Khz ;	
	  end	
	end
end
//**********	Config Control ***************
reg	[15:0]	 LUT_DATA			    ;
reg	[7:0]	   LUT_INDEX		    ;
reg	[3:0]	   I2C_set_state		;
wire    I2C_ACK ;
always@(posedge clk_5Khz or negedge reset_l)
begin
	if(!reset_l)
	begin
		LUT_INDEX	<=	0;
		I2C_set_state	<=	0;
		I2C_DATA_R		<=	0;
		I2C_start_r	<=	0;
	end
	else
	begin
		if(LUT_INDEX<100)
		begin
			case(I2C_set_state)
			STATE_TRANSFOR_START: begin
					 										if(LUT_INDEX<(SET_VIDEO+89))begin
					  										I2C_DATA_R	<=	{8'hBA,LUT_DATA};
					 									end
					 										else begin
						 										I2C_DATA_R	<=	{8'hB9,LUT_DATA};
					 										end
																I2C_start_r		<=	1'b1;
																I2C_set_state	<=	STATE_WAIT_ACK;
													 end
			STATE_WAIT_ACK :begin
												if(I2C_done)begin
													if(!I2C_ACK)begin							
														I2C_set_state	<= STATE_REG_OFFSET ;
													end
													else begin
														I2C_set_state	<= STATE_TRANSFOR_START ;		
													end					
													I2C_start_r		<=	1'b0  ;	
												end					
											end
			STATE_REG_OFFSET:	begin
													LUT_INDEX	<=	LUT_INDEX + 1'b1;
													I2C_set_state	<= STATE_TRANSFOR_START ;
												end
			default:I2C_set_state	<= STATE_TRANSFOR_START ;
			endcase
		end
	end
end
//******************************************
//***************I2C control****************
I2C_write_controler u_I2C_write_controler(
														.clk_50K		(clk_5Khz)  ,
														.reset_l		(reset_l)  	,
														.I2C_DATA   (I2C_DATA) 	,//data:[slave_addr,sub_addr,data]
														.I2C_start	(I2C_start)	,//I2C initiate signal
														.I2C_SCL	  (I2C_SCL)  	,//I2C clock
														.I2C_done	  (I2C_done)	,//12C transfor finished
														.I2C_SDA		(I2C_SDA)	 	, //I2C data
														.ACK        (I2C_ACK)
									);	

parameter	SET_VIDEO	=	10;

always
begin
	case(LUT_INDEX)
	SET_VIDEO+0	:	LUT_DATA	=	16'h0A80;
	SET_VIDEO+1	:	LUT_DATA	=	16'h0B00;
	SET_VIDEO+2	:	LUT_DATA	=	16'h0C80;
	SET_VIDEO+3	:	LUT_DATA	=	16'h0D47;
	SET_VIDEO+4	:	LUT_DATA	=	16'h0E00;
	SET_VIDEO+5	:	LUT_DATA	=	16'h0F02;
	SET_VIDEO+6	:	LUT_DATA	=	16'h1104;
	SET_VIDEO+7	:	LUT_DATA	=	16'h1200;
	SET_VIDEO+8	:	LUT_DATA	=	16'h1304;
	SET_VIDEO+9	:	LUT_DATA	=	16'h1400;
	SET_VIDEO+10:	LUT_DATA	=	16'h1501;
	SET_VIDEO+11:	LUT_DATA	=	16'h1680;
	SET_VIDEO+12:	LUT_DATA	=	16'h1800;
	SET_VIDEO+13:	LUT_DATA	=	16'h1900;
	SET_VIDEO+14:	LUT_DATA	=	16'h1A0c;
	SET_VIDEO+15:	LUT_DATA	=	16'h1B14;
	SET_VIDEO+16:	LUT_DATA	=	16'h1C00;
	SET_VIDEO+17:	LUT_DATA	=	16'h1D00;
	SET_VIDEO+18:	LUT_DATA	=	16'h1E00;
	SET_VIDEO+19:	LUT_DATA	=	16'h2800;
	SET_VIDEO+20:	LUT_DATA	=	16'hB100;
	SET_VIDEO+21:	LUT_DATA	=	16'hB200;
	SET_VIDEO+22:	LUT_DATA	=	16'hB300;
	SET_VIDEO+23:	LUT_DATA	=	16'hB400;
	SET_VIDEO+24:	LUT_DATA	=	16'hB500;
	SET_VIDEO+25:	LUT_DATA	=	16'hB600;
	SET_VIDEO+26:	LUT_DATA	=	16'hB700;
	SET_VIDEO+27:	LUT_DATA	=	16'hB800;
	SET_VIDEO+28:	LUT_DATA	=	16'hB900;
	SET_VIDEO+29:	LUT_DATA	=	16'hBA00;
	SET_VIDEO+30:	LUT_DATA	=	16'hBB00;
	SET_VIDEO+31:	LUT_DATA	=	16'hC000;
	SET_VIDEO+32:	LUT_DATA	=	16'hC100;
	SET_VIDEO+33:	LUT_DATA	=	16'hC204;
	SET_VIDEO+34:	LUT_DATA	=	16'hC3DC;
	SET_VIDEO+35:	LUT_DATA	=	16'hC40F;
	SET_VIDEO+36:	LUT_DATA	=	16'hC500;
	SET_VIDEO+37:	LUT_DATA	=	16'hC880;
	SET_VIDEO+38:	LUT_DATA	=	16'hC900;
	SET_VIDEO+39:	LUT_DATA	=	16'hCA00;
	SET_VIDEO+40:	LUT_DATA	=	16'hCB59;
	SET_VIDEO+41:	LUT_DATA	=	16'hCC03;
	SET_VIDEO+42:	LUT_DATA	=	16'hCD01;
	SET_VIDEO+43:	LUT_DATA	=	16'hCE00;
	SET_VIDEO+44:	LUT_DATA	=	16'hCF00;
	SET_VIDEO+45:	LUT_DATA	=	16'hD0FF;
	SET_VIDEO+46:	LUT_DATA	=	16'hD1FF;
	SET_VIDEO+47:	LUT_DATA	=	16'hD2FF;
	SET_VIDEO+48:	LUT_DATA	=	16'hD3FF;
	SET_VIDEO+49:	LUT_DATA	=	16'hD4FF;
	SET_VIDEO+50:	LUT_DATA	=	16'hD5FF;
	SET_VIDEO+51:	LUT_DATA	=	16'hD6FF;
	SET_VIDEO+52:	LUT_DATA	=	16'hD7FF;
	SET_VIDEO+53:	LUT_DATA	=	16'hD8FF;
	SET_VIDEO+54:	LUT_DATA	=	16'hD9FF;
	SET_VIDEO+55:	LUT_DATA	=	16'hDAFF;
	SET_VIDEO+56:	LUT_DATA	=	16'hDBFF;
	SET_VIDEO+57:	LUT_DATA	=	16'hDCFF;
	SET_VIDEO+58:	LUT_DATA	=	16'hDDFF;
	SET_VIDEO+59:	LUT_DATA	=	16'hDEFF;
	SET_VIDEO+60:	LUT_DATA	=	16'hDFFF;
	SET_VIDEO+61:	LUT_DATA	=	16'hE0FF;
	SET_VIDEO+62:	LUT_DATA	=	16'hE1FF;
	SET_VIDEO+63:	LUT_DATA	=	16'hE2FF;
	SET_VIDEO+64:	LUT_DATA	=	16'hE3FF;
	SET_VIDEO+65:	LUT_DATA	=	16'hE4FF;
	SET_VIDEO+66:	LUT_DATA	=	16'hE5FF;
	SET_VIDEO+67:	LUT_DATA	=	16'hE6FF;
	SET_VIDEO+68:	LUT_DATA	=	16'hE7FF;
	SET_VIDEO+69:	LUT_DATA	=	16'hE8FF;
	SET_VIDEO+70:	LUT_DATA	=	16'hE9FF;
	SET_VIDEO+71:	LUT_DATA	=	16'hEAFF;
	SET_VIDEO+72:	LUT_DATA	=	16'hEBFF;
	SET_VIDEO+73:	LUT_DATA	=	16'hECFF;
	SET_VIDEO+74:	LUT_DATA	=	16'hEDFF;
	SET_VIDEO+75:	LUT_DATA	=	16'hEEFF;
	SET_VIDEO+76:	LUT_DATA	=	16'hEFFF;
	SET_VIDEO+77:	LUT_DATA	=	16'hF0FF;
	SET_VIDEO+78:	LUT_DATA	=	16'hF1FF;
	SET_VIDEO+79:	LUT_DATA	=	16'hF2FF;
	SET_VIDEO+80:	LUT_DATA	=	16'hF3FF;
	SET_VIDEO+81:	LUT_DATA	=	16'hF4FF;
	SET_VIDEO+82:	LUT_DATA	=	16'hF5FF;
	SET_VIDEO+83:	LUT_DATA	=	16'hF6FF;
	SET_VIDEO+84:	LUT_DATA	=	16'hF7FF;
	SET_VIDEO+85:	LUT_DATA	=	16'hF8FF;
	SET_VIDEO+86:	LUT_DATA	=	16'hF9FF;
	SET_VIDEO+87:	LUT_DATA	=	16'hFAFF;
	SET_VIDEO+88:	LUT_DATA	=	16'hFBFF;
	SET_VIDEO+89:	LUT_DATA	=	16'hFC7F;
	default:		LUT_DATA	=	16'hxxxx;
	endcase

end
endmodule
(又是格式的问题,郁闷!!!)



注意,出来的数据是包含符合BT656标准YUV4:2:2格式的八位串行数据流,还不能直接使用。需对其进行进一步的解码处理,在此不作叙述。

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  1. liuminhuiy 2#

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  2. amibition0 1#

    受益