radix4_256fft.bsf

基于VHDL语言的一个FFT快速傅里叶变换程序采用4蝶形算法

/*
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 16 224 176)
	(text "radix4_256fft" (rect 5 0 91 16)(font "Arial" (font_size 8)))
	(text "inst" (rect 8 141 31 156)(font "Arial" ))
	(port
		(pt 0 32)
		(input)
		(text "rst" (rect 0 0 17 16)(font "Arial" (font_size 8)))
		(text "rst" (rect 21 27 38 43)(font "Arial" (font_size 8)))
		(line (pt 0 32)(pt 16 32)(line_width 1))
	)
	(port
		(pt 0 48)
		(input)
		(text "clk8x" (rect 0 0 36 16)(font "Arial" (font_size 8)))
		(text "clk8x" (rect 21 43 57 59)(font "Arial" (font_size 8)))
		(line (pt 0 48)(pt 16 48)(line_width 1))
	)
	(port
		(pt 0 64)
		(input)
		(text "invert" (rect 0 0 35 16)(font "Arial" (font_size 8)))
		(text "invert" (rect 21 59 56 75)(font "Arial" (font_size 8)))
		(line (pt 0 64)(pt 16 64)(line_width 1))
	)
	(port
		(pt 0 80)
		(input)
		(text "fft_start" (rect 0 0 50 16)(font "Arial" (font_size 8)))
		(text "fft_start" (rect 21 75 71 91)(font "Arial" (font_size 8)))
		(line (pt 0 80)(pt 16 80)(line_width 1))
	)
	(port
		(pt 0 96)
		(input)
		(text "I_in[15..0]" (rect 0 0 67 16)(font "Arial" (font_size 8)))
		(text "I_in[15..0]" (rect 21 91 88 107)(font "Arial" (font_size 8)))
		(line (pt 0 96)(pt 16 96)(line_width 3))
	)
	(port
		(pt 0 112)
		(input)
		(text "Q_in[15..0]" (rect 0 0 75 16)(font "Arial" (font_size 8)))
		(text "Q_in[15..0]" (rect 21 107 96 123)(font "Arial" (font_size 8)))
		(line (pt 0 112)(pt 16 112)(line_width 3))
	)
	(port
		(pt 208 32)
		(output)
		(text "Iout[15..0]" (rect 0 0 68 16)(font "Arial" (font_size 8)))
		(text "Iout[15..0]" (rect 119 27 187 43)(font "Arial" (font_size 8)))
		(line (pt 208 32)(pt 192 32)(line_width 3))
	)
	(port
		(pt 208 48)
		(output)
		(text "Qout[15..0]" (rect 0 0 76 16)(font "Arial" (font_size 8)))
		(text "Qout[15..0]" (rect 111 43 187 59)(font "Arial" (font_size 8)))
		(line (pt 208 48)(pt 192 48)(line_width 3))
	)
	(port
		(pt 208 64)
		(output)
		(text "out_start" (rect 0 0 60 16)(font "Arial" (font_size 8)))
		(text "out_start" (rect 127 59 187 75)(font "Arial" (font_size 8)))
		(line (pt 208 64)(pt 192 64)(line_width 1))
	)
	(port
		(pt 208 80)
		(output)
		(text "outen" (rect 0 0 37 16)(font "Arial" (font_size 8)))
		(text "outen" (rect 150 75 187 91)(font "Arial" (font_size 8)))
		(line (pt 208 80)(pt 192 80)(line_width 1))
	)
	(port
		(pt 208 96)
		(output)
		(text "overflow" (rect 0 0 53 16)(font "Arial" (font_size 8)))
		(text "overflow" (rect 134 91 187 107)(font "Arial" (font_size 8)))
		(line (pt 208 96)(pt 192 96)(line_width 1))
	)
	(drawing
		(rectangle (rect 16 16 192 144)(line_width 1))
	)
)