key_dounce4.bdf

增加有去抖模块等的fpga控制矩阵键盘的源代码及RTL级的模块图

/*
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) 1991-2008 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.
*/
//#pragma file_not_in_maxplusii_format
(header "graphic" (version "1.3"))
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	(rect 88 280 256 296)
	(text "INPUT" (rect 133 0 161 10)(font "Arial" (font_size 6)))
	(text "KEYIN[3..0]" (rect 5 0 65 12)(font "Arial" ))
	(pt 168 8)
	(drawing
		(line (pt 92 12)(pt 117 12)(line_width 1))
		(line (pt 92 4)(pt 117 4)(line_width 1))
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		(line (pt 117 12)(pt 121 8)(line_width 1))
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	(text "VCC" (rect 136 7 156 17)(font "Arial" (font_size 6)))
)
(pin
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	(rect 88 312 256 328)
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	(pt 168 8)
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)
(pin
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	(rect 448 272 624 288)
	(text "OUTPUT" (rect 1 0 39 10)(font "Arial" (font_size 6)))
	(text "KEY_H[3..0]" (rect 90 0 152 12)(font "Arial" ))
	(pt 0 8)
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)
(pin
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)
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		(rectangle (rect 16 16 120 80)(line_width 1))
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(symbol
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	(pt 48 40)
)
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	(text "KEY[3]" (rect 362 176 397 188)(font "Arial" ))
	(pt 400 192)
	(pt 352 192)
)
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	(text "KEY[1]" (rect 74 176 109 188)(font "Arial" ))
	(pt 144 192)
	(pt 64 192)
)
(connector
	(text "KEY[2]" (rect 362 24 397 36)(font "Arial" ))
	(pt 352 40)
	(pt 400 40)
)
(connector
	(text "CLK" (rect 58 40 79 52)(font "Arial" ))
	(pt 144 56)
	(pt 48 56)
)
(connector
	(text "CLK" (rect 362 40 383 52)(font "Arial" ))
	(pt 400 56)
	(pt 352 56)
)
(connector
	(text "CLK" (rect 354 192 375 204)(font "Arial" ))
	(pt 400 208)
	(pt 344 208)
)
(connector
	(text "CLK" (rect 74 192 95 204)(font "Arial" ))
	(pt 144 208)
	(pt 64 208)
)
(connector
	(text "KH[0]" (rect 290 24 318 36)(font "Arial" ))
	(pt 280 40)
	(pt 320 40)
)
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	(text "KL[0]" (rect 290 40 315 52)(font "Arial" ))
	(pt 280 56)
	(pt 320 56)
)
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	(pt 584 40)
)
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	(pt 280 192)
	(pt 320 192)
)
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	(pt 536 192)
	(pt 584 192)
)
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	(text "KL[1]" (rect 290 192 315 204)(font "Arial" ))
	(pt 280 208)
	(pt 320 208)
)
(connector
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	(pt 536 56)
	(pt 584 56)
)
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	(pt 536 208)
	(pt 584 208)
)
(connector
	(text "CLK" (rect 266 304 287 316)(font "Arial" ))
	(pt 256 320)
	(pt 320 320)
)
(connector
	(text "KEY[3..0]" (rect 266 272 314 284)(font "Arial" ))
	(pt 256 288)
	(pt 320 288)
	(bus)
)
(connector
	(text "KH[3..0]" (rect 402 264 443 276)(font "Arial" ))
	(pt 448 280)
	(pt 392 280)
	(bus)
)
(connector
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	(pt 384 320)
	(pt 448 320)
	(bus)
)