spi.bdf

用fpga实现isp接口的源码

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		(input)
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		(line (pt 0 128)(pt 98 128)(line_width 1))
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		(input)
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		(line (pt 0 144)(pt 104 144)(line_width 1))
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	(port
		(pt 256 88)
		(output)
		(text "q[7..0]" (rect 0 0 35 14)(font "Arial" (font_size 8)))
		(text "q[7..0]" (rect 223 75 258 89)(font "Arial" (font_size 8)))
		(line (pt 256 88)(pt 168 88)(line_width 3))
	)
	(drawing
		(text "64 Word(s)" (rect 136 45 148 99)(font "Arial" )(vertical))
		(text "RAM" (rect 149 58 161 81)(font "Arial" )(vertical))
		(line (pt 128 24)(pt 168 24)(line_width 1))
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	)
)
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	(pt 312 88)
	(pt 200 88)
)
(connector
	(text "RAM_WR" (rect 530 224 578 236)(font "Arial" ))
	(pt 512 240)
	(pt 592 240)
)
(connector
	(text "SendRDen" (rect 216 112 269 124)(font "Arial" ))
	(pt 312 128)
	(pt 200 128)
)
(connector
	(text "SendramCLK" (rect 220 152 284 164)(font "Arial" ))
	(pt 312 168)
	(pt 200 168)
)
(connector
	(text "RAM_RD" (rect 523 528 569 540)(font "Arial" ))
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)
(connector
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	(pt 312 432)
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)
(connector
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	(pt 368 544)
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	(bus)
)
(connector
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)
(connector
	(pt 312 472)
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)
(connector
	(text "ReceiveData[7..0]" (rect 215 344 305 356)(font "Arial" ))
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)
(connector
	(text "ReceiveCLK" (rect 207 440 269 452)(font "Arial" ))
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)
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(connector
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	(bus)
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(connector
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	(bus)
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	(bus)
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(connector
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	(bus)
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(connector
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)
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)
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)
(connector
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	(pt 904 32)
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(connector
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	(bus)
)
(connector
	(text "SendramCLK" (rect 929 160 993 172)(font "Arial" ))
	(pt 904 176)
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)
(connector
	(text "ReceiveCLK" (rect 933 176 995 188)(font "Arial" ))
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)
(connector
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)
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(connector
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(connector
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)
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)
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)
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)
(connector
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)
(junction (pt 584 112))