alt_sync_fifo_0oi.tdf

sdram读写

--alt_sync_fifo DEVICE_FAMILY="Cyclone" LPM_NUMWORDS=512 LPM_SHOWAHEAD="OFF" LPM_WIDTH=16 LPM_WIDTHU=9 OVERFLOW_CHECKING="ON" UNDERFLOW_CHECKING="ON" USE_EAB="ON" aclr data q rdclk rdreq wrclk wrreq wrusedw
--VERSION_BEGIN 9.1 cbx_a_gray2bin 2009:10:21:21:22:16:SJ cbx_a_graycounter 2009:10:21:21:22:16:SJ cbx_altdpram 2009:10:21:21:22:16:SJ cbx_altsyncram 2009:10:21:21:22:16:SJ cbx_cycloneii 2009:10:21:21:22:16:SJ cbx_dcfifo 2009:10:21:21:22:16:SJ cbx_fifo_common 2009:10:21:21:22:16:SJ cbx_lpm_add_sub 2009:10:21:21:22:16:SJ cbx_lpm_compare 2009:10:21:21:22:16:SJ cbx_lpm_counter 2009:10:21:21:22:16:SJ cbx_lpm_decode 2009:10:21:21:22:16:SJ cbx_lpm_mux 2009:10:21:21:22:16:SJ cbx_mgl 2009:10:21:21:37:49:SJ cbx_scfifo 2009:10:21:21:22:16:SJ cbx_stratix 2009:10:21:21:22:16:SJ cbx_stratixii 2009:10:21:21:22:16:SJ cbx_stratixiii 2009:10:21:21:22:16:SJ cbx_util_mgl 2009:10:21:21:22:16:SJ  VERSION_END


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FUNCTION dpram_6o31 (data[15..0], inclock, outclock, outclocken, rdaddress[8..0], wraddress[8..0], wren)
RETURNS ( q[15..0]);
FUNCTION carry_sum (cin, sin)
RETURNS ( cout, sout);
FUNCTION add_sub_se8 (dataa[8..0], datab[8..0])
RETURNS ( cout, result[8..0]);
FUNCTION add_sub_918 (dataa[9..0], datab[9..0])
RETURNS ( result[9..0]);
FUNCTION cntr_kua (aclr, clock, cnt_en)
RETURNS ( q[9..0]);

--synthesis_resources = lut 102 M4K 2 
SUBDESIGN alt_sync_fifo_0oi
( 
	aclr	:	input;
	data[15..0]	:	input;
	q[15..0]	:	output;
	rdclk	:	input;
	rdempty	:	output;
	rdreq	:	input;
	rdusedw[8..0]	:	output;
	wrclk	:	input;
	wrempty	:	output;
	wrfull	:	output;
	wrreq	:	input;
	wrusedw[8..0]	:	output;
) 
VARIABLE 
	dpram4 : dpram_6o31;
	cs10a[1..0] : carry_sum;
	cs11a[9..0] : carry_sum;
	cs12a[9..0] : carry_sum;
	cs13 : carry_sum;
	cs6a[9..0] : carry_sum;
	dffe5a[9..0] : dffe;
	dffe7a[9..0] : dffe;
	dffe8a[9..0] : dffe;
	dffe9a[9..0] : dffe;
	add_sub2 : add_sub_se8;
	add_sub3 : add_sub_918;
	cntr1 : cntr_kua;
	fast_feed_read	: WIRE;
	read_count_actual[9..0]	: WIRE;
	read_delay_stratix[9..0]	: WIRE;

BEGIN 
	dpram4.data[] = data[];
	dpram4.inclock = wrclk;
	dpram4.outclock = rdclk;
	dpram4.outclocken = cs13.sout;
	dpram4.rdaddress[8..0] = read_count_actual[8..0];
	dpram4.wraddress[8..0] = cntr1.q[8..0];
	dpram4.wren = cs10a[1..1].sout;
	cs10a[].cin = ( ((! cs10a[0..0].cout) & wrreq), ((! (cntr1.q[9..9] $ dffe9a[9..9].q)) $ add_sub2.cout));
	cs10a[].sin = ( ((! cs10a[0..0].cout) & wrreq), ((! (cntr1.q[9..9] $ dffe9a[9..9].q)) $ add_sub2.cout));
	cs11a[].cin = ( ((! (cntr1.q[9..1] $ dffe9a[9..1].q)) & cs11a[8..0].cout), (! (cntr1.q[0..0] $ dffe9a[0..0].q)));
	cs11a[].sin = ( ((! (cntr1.q[9..1] $ dffe9a[9..1].q)) & cs11a[8..0].cout), (! (cntr1.q[0..0] $ dffe9a[0..0].q)));
	cs12a[].cin = ( ((! (dffe8a[9..1].q $ read_delay_stratix[9..1])) & cs12a[8..0].cout), (! (dffe8a[0..0].q $ read_delay_stratix[0..0])));
	cs12a[].sin = ( ((! (dffe8a[9..1].q $ read_delay_stratix[9..1])) & cs12a[8..0].cout), (! (dffe8a[0..0].q $ read_delay_stratix[0..0])));
	cs13.cin = ((! cs12a[9..9].cout) & rdreq);
	cs13.sin = ((! cs12a[9..9].cout) & rdreq);
	cs6a[].cin = ( (read_count_actual[9..1] & cs6a[8..0].cout), (fast_feed_read & read_count_actual[0..0]));
	cs6a[].sin = ( (read_count_actual[9..1] $ cs6a[8..0].cout), (fast_feed_read $ read_count_actual[0..0]));
	dffe5a[].clk = rdclk;
	dffe5a[].clrn = (! aclr);
	dffe5a[].d = cs6a[].sout;
	dffe7a[].clk = wrclk;
	dffe7a[].clrn = (! aclr);
	dffe7a[].d = cntr1.q[];
	dffe8a[].clk = rdclk;
	dffe8a[].clrn = (! aclr);
	dffe8a[].d = dffe7a[].q;
	dffe9a[].clk = wrclk;
	dffe9a[].clrn = (! aclr);
	dffe9a[].d = read_delay_stratix[];
	add_sub2.dataa[8..0] = cntr1.q[8..0];
	add_sub2.datab[8..0] = dffe9a[8..0].q;
	add_sub3.dataa[] = dffe8a[].q;
	add_sub3.datab[] = read_delay_stratix[];
	cntr1.aclr = aclr;
	cntr1.clock = wrclk;
	cntr1.cnt_en = cs10a[1..1].sout;
	fast_feed_read = cs13.cout;
	q[] = dpram4.q[];
	rdempty = cs12a[9..9].sout;
	rdusedw[8..0] = add_sub3.result[8..0];
	read_count_actual[] = dffe5a[].q;
	read_delay_stratix[] = read_count_actual[];
	wrempty = cs11a[9..9].sout;
	wrfull = cs10a[0..0].sout;
	wrusedw[8..0] = add_sub2.result[8..0];
END;
--VALID FILE