add_sub_sjg.tdf

运用CORDIC算法完成对矢量信号模值及相位信息的运算

--lpm_add_sub CARRY_CHAIN="MANUAL" CARRY_CHAIN_LENGTH=48 DEVICE_FAMILY="Cyclone II" LPM_REPRESENTATION="UNSIGNED" LPM_WIDTH=18 ONE_INPUT_IS_CONSTANT="NO" add_sub dataa datab result
--VERSION_BEGIN 7.2 cbx_cycloneii 2007:06:13:15:47:32:SJ cbx_lpm_add_sub 2007:08:06:16:01:34:SJ cbx_mgl 2007:08:03:15:48:12:SJ cbx_stratix 2007:05:02:16:27:14:SJ cbx_stratixii 2007:06:28:17:26:26:SJ  VERSION_END


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--synthesis_resources = lut 36 
SUBDESIGN add_sub_sjg
( 
	add_sub	:	input;
	dataa[17..0]	:	input;
	datab[17..0]	:	input;
	result[17..0]	:	output;
) 
VARIABLE
	result_int[18..0]	:	WIRE;
BEGIN 
	result_int[] = (dataa[], !add_sub) + (!add_sub $ datab[], !add_sub);
	result[] = result_int[18..1];
END;
--VALID FILE