a_gray2bin_27b.tdf

dpsk调制编码 vhdl硬件实现

--a_gray2bin carry_chain="MANUAL" carry_chain_length=70 device_family="Stratix" ignore_carry_buffers="OFF" WIDTH=13 bin gray
--VERSION_BEGIN 4.2 cbx_a_gray2bin 2004:03:06:00:52:20:SJ cbx_mgl 2004:10:26:10:32:18:SJ  VERSION_END


--  Copyright (C) 1988-2002 Altera Corporation
--  Any  megafunction  design,  and related netlist (encrypted  or  decrypted),
--  support information,  device programming or simulation file,  and any other
--  associated  documentation or information  provided by  Altera  or a partner
--  under  Altera's   Megafunction   Partnership   Program  may  be  used  only
--  to program  PLD  devices (but not masked  PLD  devices) from  Altera.   Any
--  other  use  of such  megafunction  design,  netlist,  support  information,
--  device programming or simulation file,  or any other  related documentation
--  or information  is prohibited  for  any  other purpose,  including, but not
--  limited to  modification,  reverse engineering,  de-compiling, or use  with
--  any other  silicon devices,  unless such use is  explicitly  licensed under
--  a separate agreement with  Altera  or a megafunction partner.  Title to the
--  intellectual property,  including patents,  copyrights,  trademarks,  trade
--  secrets,  or maskworks,  embodied in any such megafunction design, netlist,
--  support  information,  device programming or simulation file,  or any other
--  related documentation or information provided by  Altera  or a megafunction
--  partner, remains with Altera, the megafunction partner, or their respective
--  licensors. No other licenses, including any licenses needed under any third
--  party's intellectual property, are provided herein.



--synthesis_resources = 
SUBDESIGN a_gray2bin_27b
( 
	bin[12..0]	:	output;
	gray[12..0]	:	input;
) 
VARIABLE 
	xor0	: WIRE;
	xor1	: WIRE;
	xor10	: WIRE;
	xor11	: WIRE;
	xor2	: WIRE;
	xor3	: WIRE;
	xor4	: WIRE;
	xor5	: WIRE;
	xor6	: WIRE;
	xor7	: WIRE;
	xor8	: WIRE;
	xor9	: WIRE;

BEGIN 
	bin[] = ( gray[12..12], xor11, xor10, xor9, xor8, xor7, xor6, xor5, xor4, xor3, xor2, xor1, xor0);
	xor0 = (gray[0..0] $ xor1);
	xor1 = (gray[1..1] $ xor2);
	xor10 = (gray[10..10] $ xor11);
	xor11 = (gray[12..12] $ gray[11..11]);
	xor2 = (gray[2..2] $ xor3);
	xor3 = (gray[3..3] $ xor4);
	xor4 = (gray[4..4] $ xor5);
	xor5 = (gray[5..5] $ xor6);
	xor6 = (gray[6..6] $ xor7);
	xor7 = (gray[7..7] $ xor8);
	xor8 = (gray[8..8] $ xor9);
	xor9 = (gray[9..9] $ xor10);
END;
--VALID FILE