dds.bsf

基于DDS原理的正弦信号发生器。用VERILOG语言实现

/*
WARNING: Do NOT edit the input and output ports in this file in a text
editor if you plan to continue editing the block that represents it in
the Block Editor! File corruption is VERY likely to occur.
*/
/*
Copyright (C) 1991-2007 Altera Corporation
Your use of Altera Corporation's design tools, logic functions 
and other software and tools, and its AMPP partner logic 
functions, and any output files from any of the foregoing 
(including device programming or simulation files), and any 
associated documentation or information are expressly subject 
to the terms and conditions of the Altera Program License 
Subscription Agreement, Altera MegaCore Function License 
Agreement, or other applicable license agreement, including, 
without limitation, that your use is for the sole purpose of 
programming logic devices manufactured by Altera and sold by 
Altera or its authorized distributors.  Please refer to the 
applicable agreement for further details.
*/
(header "symbol" (version "1.1"))
(symbol
	(rect 16 16 200 144)
	(text "DDS" (rect 5 0 28 12)(font "Arial" ))
	(text "inst" (rect 8 112 25 124)(font "Arial" ))
	(port
		(pt 0 32)
		(input)
		(text "clk" (rect 0 0 14 12)(font "Arial" ))
		(text "clk" (rect 21 27 35 39)(font "Arial" ))
		(line (pt 0 32)(pt 16 32)(line_width 1))
	)
	(port
		(pt 0 48)
		(input)
		(text "reset_n" (rect 0 0 36 12)(font "Arial" ))
		(text "reset_n" (rect 21 43 57 55)(font "Arial" ))
		(line (pt 0 48)(pt 16 48)(line_width 1))
	)
	(port
		(pt 0 64)
		(input)
		(text "freqword[19..0]" (rect 0 0 74 12)(font "Arial" ))
		(text "freqword[19..0]" (rect 21 59 95 71)(font "Arial" ))
		(line (pt 0 64)(pt 16 64)(line_width 3))
	)
	(port
		(pt 184 32)
		(output)
		(text "sync" (rect 0 0 24 12)(font "Arial" ))
		(text "sync" (rect 139 27 163 39)(font "Arial" ))
		(line (pt 184 32)(pt 168 32)(line_width 1))
	)
	(port
		(pt 184 48)
		(output)
		(text "blank" (rect 0 0 25 12)(font "Arial" ))
		(text "blank" (rect 138 43 163 55)(font "Arial" ))
		(line (pt 184 48)(pt 168 48)(line_width 1))
	)
	(port
		(pt 184 64)
		(output)
		(text "sinout[9..0]" (rect 0 0 55 12)(font "Arial" ))
		(text "sinout[9..0]" (rect 108 59 163 71)(font "Arial" ))
		(line (pt 184 64)(pt 168 64)(line_width 3))
	)
	(port
		(pt 184 80)
		(output)
		(text "clkout" (rect 0 0 29 12)(font "Arial" ))
		(text "clkout" (rect 134 75 163 87)(font "Arial" ))
		(line (pt 184 80)(pt 168 80)(line_width 1))
	)
	(drawing
		(rectangle (rect 16 16 168 112)(line_width 1))
	)
)