f48.bdf

描述了48分频的功能的原理图

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		(input)
		(text "IN4" (rect 20 68 37 80)(font "Courier New" (bold)))
		(text "IN4" (rect 20 68 37 80)(font "Courier New" (bold)))
		(line (pt 0 72)(pt 16 72)(line_width 1))
	)
	(port
		(pt 0 56)
		(input)
		(text "IN3" (rect 20 52 37 64)(font "Courier New" (bold)))
		(text "IN3" (rect 20 52 37 64)(font "Courier New" (bold)))
		(line (pt 0 56)(pt 16 56)(line_width 1))
	)
	(port
		(pt 0 40)
		(input)
		(text "IN2" (rect 20 36 37 48)(font "Courier New" (bold)))
		(text "IN2" (rect 20 36 37 48)(font "Courier New" (bold)))
		(line (pt 0 40)(pt 16 40)(line_width 1))
	)
	(port
		(pt 0 24)
		(input)
		(text "IN1" (rect 20 20 37 32)(font "Courier New" (bold)))
		(text "IN1" (rect 20 20 37 32)(font "Courier New" (bold)))
		(line (pt 0 24)(pt 16 24)(line_width 1))
	)
	(port
		(pt 104 56)
		(output)
		(text "OUT" (rect 71 52 88 64)(font "Courier New" (bold)))
		(text "OUT" (rect 71 52 88 64)(font "Courier New" (bold)))
		(line (pt 88 56)(pt 104 56)(line_width 1))
	)
	(drawing
		(line (pt 16 96)(pt 16 16)(line_width 1))
		(line (pt 88 96)(pt 88 16)(line_width 1))
		(line (pt 16 96)(pt 88 96)(line_width 1))
		(line (pt 16 16)(pt 88 16)(line_width 1))
	)
)
(symbol
	(rect 40 104 72 136)
	(text "GND" (rect 8 16 29 26)(font "Arial" (font_size 6)))
	(text "inst9" (rect 3 21 26 33)(font "Arial" )(invisible))
	(port
		(pt 16 0)
		(output)
		(text "1" (rect 18 0 23 12)(font "Courier New" (bold))(invisible))
		(text "1" (rect 18 0 23 12)(font "Courier New" (bold))(invisible))
		(line (pt 16 8)(pt 16 0)(line_width 1))
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	(drawing
		(line (pt 8 8)(pt 16 16)(line_width 1))
		(line (pt 16 16)(pt 24 8)(line_width 1))
		(line (pt 8 8)(pt 24 8)(line_width 1))
	)
)
(symbol
	(rect 344 96 376 128)
	(text "GND" (rect 8 16 29 26)(font "Arial" (font_size 6)))
	(text "inst10" (rect 3 21 32 33)(font "Arial" )(invisible))
	(port
		(pt 16 0)
		(output)
		(text "1" (rect 18 0 23 12)(font "Courier New" (bold))(invisible))
		(text "1" (rect 18 0 23 12)(font "Courier New" (bold))(invisible))
		(line (pt 16 8)(pt 16 0)(line_width 1))
	)
	(drawing
		(line (pt 8 8)(pt 16 16)(line_width 1))
		(line (pt 16 16)(pt 24 8)(line_width 1))
		(line (pt 8 8)(pt 24 8)(line_width 1))
	)
)
(symbol
	(rect 64 144 96 160)
	(text "VCC" (rect 7 0 27 10)(font "Arial" (font_size 6)))
	(text "inst11" (rect 3 5 32 17)(font "Arial" )(invisible))
	(port
		(pt 16 16)
		(output)
		(text "1" (rect 19 7 24 19)(font "Courier New" (bold))(invisible))
		(text "1" (rect 19 7 24 19)(font "Courier New" (bold))(invisible))
		(line (pt 16 16)(pt 16 8)(line_width 1))
	)
	(drawing
		(line (pt 8 8)(pt 24 8)(line_width 1))
	)
)
(symbol
	(rect 296 160 328 176)
	(text "VCC" (rect 7 0 27 10)(font "Arial" (font_size 6)))
	(text "inst12" (rect 3 5 32 17)(font "Arial" )(invisible))
	(port
		(pt 16 16)
		(output)
		(text "1" (rect 19 7 24 19)(font "Courier New" (bold))(invisible))
		(text "1" (rect 19 7 24 19)(font "Courier New" (bold))(invisible))
		(line (pt 16 16)(pt 16 8)(line_width 1))
	)
	(drawing
		(line (pt 8 8)(pt 24 8)(line_width 1))
	)
)
(connector
	(text "q10" (rect 256 72 273 84)(font "Arial" ))
	(pt 248 88)
	(pt 280 88)
)
(connector
	(text "q11" (rect 264 88 281 100)(font "Arial" ))
	(pt 248 104)
	(pt 280 104)
)
(connector
	(text "q12" (rect 256 104 273 116)(font "Arial" ))
	(pt 248 120)
	(pt 288 120)
)
(connector
	(text "q13" (rect 256 120 273 132)(font "Arial" ))
	(pt 248 136)
	(pt 296 136)
)
(connector
	(text "q21" (rect 536 88 553 100)(font "Arial" ))
	(pt 528 104)
	(pt 560 104)
)
(connector
	(pt 408 136)
	(pt 360 136)
)
(connector
	(pt 360 136)
	(pt 360 152)
)
(connector
	(pt 248 152)
	(pt 360 152)
)
(connector
	(pt 360 152)
	(pt 408 152)
)
(connector
	(pt 96 192)
	(pt 128 192)
)
(connector
	(text "cp" (rect 360 176 371 188)(font "Arial" ))
	(pt 408 192)
	(pt 352 192)
)
(connector
	(pt 80 -24)
	(pt 136 -24)
)
(connector
	(text "co" (rect 96 40 107 52)(font "Arial" ))
	(pt 128 56)
	(pt 88 56)
)
(connector
	(text "co" (rect 376 40 387 52)(font "Arial" ))
	(pt 408 56)
	(pt 368 56)
)
(connector
	(text "q10" (rect -56 -72 -39 -60)(font "Arial" ))
	(pt -24 -56)
	(pt -64 -56)
)
(connector
	(text "q11" (rect -56 -56 -39 -44)(font "Arial" ))
	(pt -24 -40)
	(pt -64 -40)
)
(connector
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	(pt -24 -24)
	(pt -64 -24)
)
(connector
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	(pt -24 -8)
	(pt -64 -8)
)
(connector
	(pt 56 104)
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)
(connector
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(connector
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(connector
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(connector
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(connector
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(connector
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(connector
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(connector
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(connector
	(pt 80 160)
	(pt 80 168)
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(connector
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(connector
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(connector
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)
(connector
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(connector
	(pt 80 168)
	(pt 112 168)
)
(connector
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	(pt 128 168)
)
(connector
	(pt 312 176)
	(pt 312 184)
)
(connector
	(pt 312 184)
	(pt 344 184)
)
(connector
	(pt 344 184)
	(pt 344 168)
)
(connector
	(pt 344 168)
	(pt 408 168)
)
(connector
	(text "q13" (rect -56 -8 -39 4)(font "Arial" ))
	(pt -24 8)
	(pt -64 8)
)
(junction (pt 360 152))
(junction (pt 96 72))
(junction (pt 96 88))
(junction (pt 96 104))
(junction (pt 384 72))
(junction (pt 384 88))
(junction (pt 384 104))
(junction (pt 112 152))
(junction (pt 112 168))