Chapter 10 - VHDL Introduction-2x2(1)

Chapter 10 - VHDL Introduction-2x2(1) - VHDL Description of...

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6;4PT8R $$# <NTRO7U6T<ON TO V;7? ((Click the mouse to move to the next page± Use the **ES((C key to exit this chapter± ±²³± 9+'/ 'JXHWNUYNTS TK &TRGNSFYNTSFQ &NWHZNYX ±²³´ 9+'/ 0TIJQX KTW 0ZQYNUQJ]JWX ±²³µ 9+'/ 0TIZQJX ±²³¶ 6NLSFQX FSI &TSXYFSYX ±²³· $WWF^X ±²³¸ 9+'/ 2UJWFYTWX ±²³¹ 3FHPFLJX FSI /NGWFWNJX ±²³º ,((( 6YFSIFWI /TLNH ±²³» &TRUNQFYNTS FSI 6NRZQFYNTS TK 9+'/ &TIJ 9--+))1 +))JXXXHWWWNNUUUYYYNNTTSS TTK *((TTRRGNNSSFYYYNNTTSSFQQ *((NNWWWHZZZNNYYYXXX 6JHYYYNNTTSS °±²° ³UUU² ´#!µ´#"¶ ƖƕNj $ 9+'/ ¼9JW^ MNLM XUJJI NSYJLWFYJI HNWHZNYX +FWI\FWJ 'JXHWNUYNTS /FSLZFLJ½ XNLSFQ NX ZXJI YT IJXHWNGJ F XNLSFQ NS F UM^XNHFQ X^XYJR³ ƖƕNj 7MJ X^RGTQ µ!"µ NX YMJ XNLSFQ FXXNLSRJSY TUJWFYTW \MNHM NSINHFYJX YMFY YMJ [FQZJ HTRUZYJI TS YMJ WNLMY¾MFSI XNIJ NX FXXNLSJI YT YMJ XNLSFQ TS YMJ QJKY XNIJ³ +5NQLZ]ZWZWJ °± )) ,,Gate ((Circuit $ JGZZGLRRUU]] IJXHWNUYNTS TK YMJ HNWHZNY \MJWJ NY NX FXXZRJI YMFY JFHM LFYJ MFX F ·¾SX UWTUFLFYNTS IJQF^³ +5NQLZ]ZWZWJ °± )) ,,Gate ((Circuit :MJS XNRZQFYJI¿ YMJ KNWXY XYFYJRJSY \NQQ GJ J[FQZFYJI FS^ YNRJ $ TW % HMFSLJX¿ FSI YMJ XJHTSI XYFYJRJSY \NQQ GJ J[FQZFYJI FS^ YNRJ & TW ' HMFSLJX³ 6ZUUTXJ YMFY NSNYNFQQ^ $ " ±¿ FSI % " & " ' " ( " ²³ ,K % HMFSLJX YT ± FY YNRJ ²¿ & \NQQ HMFSLJ YT ± FY YNRJ " ·SX³ 7MJS¿ ( \NQQ HMFSLJ YT ± FY YNRJ " ±²SX ³
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$ XNLSFQ FXXNLSRJSY XYFYJRJSY MFX YMJ KTWRÀ XNLSFQDSFRJ !" J]UWJXXNTS > FKYYYJWWW IJQF^@ %WFHPJYX NSINHFYJ µ FKYYYJWWW IJQF^¶µ NX TUYNTSFQ³ ,K TRNYYJI¿ FS NSKNSNYJXNRFQ ∱ ¼IJQYF½ IJQF^ NX FXXZRJI³ *N[JS YMJ XYFYJRJSYXÀ ( !" & TTWWW ' & !" $ FSSI % ,K $ " ·¶±¸·í¿ % " & " ' " ·¶²¸·í¿ FSI % HMFSLJX YT ·¶±¸·í FY YNRJ " ±¿ YMJ XJHTSI XYFYJRJSY J]JHZYJX¿ FSI & HMFSLJX YT ·¶±¸·í FY YNRJ ±Á∱³ 7MJ KNWXY XYFYJRJSY YMJS J]JHZYJX¿ FSI ( HMFSLJX YT ·¶±¸·í FY YNRJ ±Á´∱³ +5NQLZ]ZWZWJ °±!)) ..Inverter with ++Feedback ([JS NK F 9+'/ UWTLWFR MFX ST J]UQNHNY QTTUX¿ HTSHZWWJSY XYFYJRJSYX RF^ J]JHZYJ WJUJFYJIQ^ FX NK YMJ^ \JWJ NS F QTTU³ )FHYTNIÀ 5NSL 2XHNQQFYTW ¿ SJJIX TII SZRGJW TK XYFLJX¿ RNSNRZR µ +5NQLZ]ZWZWJ °±")) Three ,,Gates with a ((Common ..Input and ))Different ))Delays +5NQLZ]ZWZWJ °±#)) &&Array of &&A3N))D ,,Gates &TRGNSNSL FWWF^X TK INKKJWJSY QJSLYMX
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..SSJWWWYYYNNFQQ +))JQQF^^^XXX 6JHYYYNNTTSS °±²° ³UUU² ´#$ ¶ 9+'/ UWT[NIJX Y\T PNSIX TK IJQF^ RTIJQX ³ NSJWYNFQ IJQF^X FSI YWFSXUTWY IJQF^X³ $ XNLSFQ FXXNLSRJSY XYFYJRJSY TK YMJ KTWR XNLSFQDSFRJ !" J]UWJXXNTS FKYYYJWWW IJQF^ FXXZRJX FS NSJWYNFQ IJQF^ G^ IJKFZQY³ $ IJ[NHJ \NYM FS NSJWYNFQ IJQF^ TK ' YNRJ ZSNYX IJQF^X FS NSUZY XNLSFQ G^ ' MT\J[JW¿ NSUZY HMFSLJX YMFY THHZW QJXX YMFS ' YNRJ ZSNYX FUFWY FWJ KNQYJWJI TZY FSI IT STY FUUJFW FY YMJ TZYUZY³ 7WWWFSSXXXUUUTTWWWYYY +))JQQF^^^XXX $ IJ[NHJ \NYM F YWFSXUTWY ¼NIJFQ½ IJQF^ TK ' YNRJ ZSNYX IJQF^X FS^ NSUZY XNLSFQ G^ '³ 8SQNPJ FS NSJWYNFQ IJQF^¿ FQQ XNLSFQ HMFSLJX UFXX YMWTZLM \NYMTZY FS^ KNQYJWNSL³ 7MJ KTQQT\NSL 9+'/ XYFYJRJSY RTIJQX F YWFSXUTWY IJQF^À XNLSFQDSFRJ !" YYYWWWFSSXXXUUUTTWWWYYY J]UWJXXNTS FKYYYJWWW IJQF^ 7MJ PJ^\TWI YYYWWWFSSXXXUUUTTWWWYYY NX WJVZNWJI TYMJW\NXJ¿ YMJ IJKFZQY NSJWYNFQ IJQF^ NX FXXZRJI³ = ± !" YYYWWWFSSXXXUUUTTWWWYYY ; FKYYYJWWW ±² SX = ´ !" ; FKYJW ±² SX ¾¾ NSJWYNFQ IJQF^ # $# %# &# '# (# +5NQLZ]ZWZWJ °±$)) !²to² 2Multiplexer 7MNX XYFYJRJSY J]JHZYJX \MJSJ[JW $¿ ,²¿ TW ,± HMFSLJX³
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