mirror_col.v

这是用于开发带有摄像头的嵌入式系统的一个参考实例。这个工程中是在Altera的DE2开发板上驱动一个Mt9m011的摄像头

module Mirror_Col(	//	Input Side
					iCCD_R,
					iCCD_G,
					iCCD_B,
					iCCD_DVAL,
					iCCD_PIXCLK,
					iRST_N,
					//	Output Side
					oCCD_R,
					oCCD_G,
					oCCD_B,
					oCCD_DVAL	);
//	Input Side					
input	[9:0]	iCCD_R;
input	[9:0]	iCCD_G;
input	[9:0]	iCCD_B;
input			iCCD_DVAL;
input			iCCD_PIXCLK;
input			iRST_N;
//	Output Side
output	[9:0]	oCCD_R;
output	[9:0]	oCCD_G;
output	[9:0]	oCCD_B;
output			oCCD_DVAL;
//	Internal Registers
reg		[9:0]	Z_Cont;
reg				mCCD_DVAL;

assign	oCCD_DVAL	=	mCCD_DVAL;

always@(posedge iCCD_PIXCLK or negedge iRST_N)
begin
	if(!iRST_N)
	begin
		mCCD_DVAL	<=	0;
		Z_Cont		<=	0;
	end
	else
	begin
		mCCD_DVAL	<=	iCCD_DVAL;
		if(Z_Cont<640)
		begin
			if(iCCD_DVAL)
			Z_Cont	<=	Z_Cont+1'b1;
		end
		else
		Z_Cont	<=	0;
	end
end

Stack_RAM (
			.clock(iCCD_PIXCLK),
			.data(iCCD_R),
			.rdaddress(639-Z_Cont),
			.wraddress(Z_Cont),
			.wren(iCCD_DVAL),
			.q(oCCD_R));

Stack_RAM (
			.clock(iCCD_PIXCLK),
			.data(iCCD_G),
			.rdaddress(639-Z_Cont),
			.wraddress(Z_Cont),
			.wren(iCCD_DVAL),
			.q(oCCD_G));

Stack_RAM (
			.clock(iCCD_PIXCLK),
			.data(iCCD_B),
			.rdaddress(639-Z_Cont),
			.wraddress(Z_Cont),
			.wren(iCCD_DVAL),
			.q(oCCD_B));

endmodule