a_graycounter_u06.tdf

sdram读写

--a_graycounter DEVICE_FAMILY="Cyclone" WIDTH=9 aclr clock cnt_en q
--VERSION_BEGIN 8.1 cbx_a_gray2bin 2008:05:19:09:32:04:SJ cbx_a_graycounter 2008:05:19:09:39:53:SJ cbx_cycloneii 2008:05:19:10:57:37:SJ cbx_flex10ke 2008:05:19:10:53:03:SJ cbx_mgl 2008:08:08:15:16:18:SJ cbx_stratix 2008:08:05:17:10:23:SJ cbx_stratixii 2008:08:07:13:54:47:SJ  VERSION_END


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--synthesis_resources = lut 10 
SUBDESIGN a_graycounter_u06
( 
	aclr	:	input;
	clock	:	input;
	cnt_en	:	input;
	q[8..0]	:	output;
) 
VARIABLE 
	counter6a[8..0] : dffeas;
	parity5 : dffeas;
	counter_cout[8..0]	: WIRE;
	parity_cout	: WIRE;
	sclr	: NODE;
	updown	: NODE;

BEGIN 
	counter6a[].clk = clock;
	counter6a[].clrn = ( (! aclr), (! aclr), (! aclr), (! aclr), (! aclr), (! aclr), (! aclr), (! aclr), (! aclr));
	counter6a[].d = ( (counter6a[8].q $ counter_cout[7..7]), (counter6a[7].q $ (counter6a[6].q & counter_cout[6..6])), (counter6a[6].q $ (counter6a[5].q & counter_cout[5..5])), (counter6a[5].q $ (counter6a[4].q & counter_cout[4..4])), (counter6a[4].q $ (counter6a[3].q & counter_cout[3..3])), (counter6a[3].q $ (counter6a[2].q & counter_cout[2..2])), (counter6a[2].q $ (counter6a[1].q & counter_cout[1..1])), (counter6a[1].q $ (counter6a[0].q & counter_cout[0..0])), ((cnt_en & (counter6a[0].q $ (! parity_cout))) # ((! cnt_en) & counter6a[0].q)));
	counter6a[].sclr = sclr;
	parity5.clk = clock;
	parity5.clrn = (! aclr);
	parity5.d = (parity5.q $ cnt_en);
	parity5.sclr = sclr;
	counter_cout[] = ( B"0", (counter_cout[6..6] & (! counter6a[6].q)), (counter_cout[5..5] & (! counter6a[5].q)), (counter_cout[4..4] & (! counter6a[4].q)), (counter_cout[3..3] & (! counter6a[3].q)), (counter_cout[2..2] & (! counter6a[2].q)), (counter_cout[1..1] & (! counter6a[1].q)), (counter_cout[0..0] & (! counter6a[0].q)), (cnt_en & parity_cout));
	parity_cout = ((parity5.q $ (! updown)) & cnt_en);
	q[] = counter6a[].q;
	sclr = GND;
	updown = VCC;
END;
--VALID FILE