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Issue > Oct 2005 > «Ê­±¯S¼g
 
 
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PXI ¶i¤J Express ®É¥N


( 01 Oct 2005 )
Jon Titus, ECN¸ê²`§Þ³N½s¿è



¦pªG­t³d´ú¸Õ»P´ú¶qªº¤uµ{®vÁÙ¨S¦³¥Î PXI ¶×¬y±Æ¨ÓÀ°§U¸Ñ¨M´ú¶q°ÝÃD¡A¨º»ò¦Ü¤Ö¤w¸gÅ¥»¡¹L³o­ÓªF¦è¤F¡C¦Û 1998 ¦~ PXI¡]»ö¾¹ªº PCI ÂX®i¡^¶×¬y±Æ°Ý¥@¥H¨Ó¡A¦U®a¤½¥q±À¥X»P PXI ¦³Ãöªº²£«~¶W¹L 1200 ¥ó¡A¦p»ö¾¹¼Ò²Õ¡B±±¨î¾¹¡B¾÷½c¡B¹qÆl¡B¤¶­±¡B¹q·½©M³nÅé¡]¹Ï 1¡^¡C



¾¨ºÞ PXI ¶×¬y±Æ¦³ 132 M ¦ì¤¸²Õ/¬íªºÀW¼e¡A¦ý¾÷¾¹µøÄ±©Îµø°T¬y¨t²Î¤¤¥i¯à·|»Ý­n§ó°ªªº¸ê®Æ¶Ç¿é³t«×¡CNational Instruments ¤½¥q²£«~¦æ¾P¥DºÞ Eric Starloff ¸ÑÄÀ¡A¬°º¡¨¬³o¨Ç»Ý¨D¡A¶}µo¤H­û¥²¶·¨Ì¾a±M¦³ªº¶×¬y±Æ¨Ó¶Ç¿é¸ê®Æ¡C³oºØ±¡ªp«Ü§Ö´N·|±o¨ì§ïµ½¡C

¬°¤F¼W¥[®à¤W«¬¹q¸£¶×¬y±Æ³q°TªºÀW¼e¡A¹q¸£»s³y°Ó¨Ï¥Î¤F PCI Express ¶×¬y±Æ¡A³o¬O¸ê®Æ±K¶°«¬¹Ï§ÎÀ³¥Îªº¥²µMµ²ªG¡C¡§Express¡¨ÂX®i¼W¥[¤F°ª³t«H¸¹½u¡A¥¦¦b¤@ºØÃþ¦üºô¸ô¬[ºc¤W¶i¦æ³q°T¡CPCI Express ¶×¬y±Æ¦b¦ê¦C¦¡§C¹qÀ£®t°Ê°T¸¹¡]LVDS¡^¡§³q¹D¡¨¤W¥H°ª¹F 6G ¦ì¤¸²Õ/¬íªº³t«×¶Ç¿é¸ê®Æ¥]¡CCompact PCI¡]cPCI¡^¶×¬y±Æªº¤u·~¥Î¤á¤]·|«Ü§Ö¸ò¤W¡A§Y±Ä¥Î cPCI Express ¼Ð·Ç¡C¦]¬° PXI ³]³Æ¬O«ö·Ó cPCI ¶×¬y±Æ³W½d«Ø¥ß¡A©Ò¥H PXI ªÀ¹Î¤]±N±Ä¥Î¬Û¦Pªº¼Ð·Ç¡A¦W¬° PXI Express¡C

Loofie Gutterman ¬O PXI ¨t²ÎÁp·ù¡]PXISA¡^ªºÁ`µô¡A¥L¸ÑÄÀ¡A¸Ó²Õ´¤w¸g»P PICMG ®i¶}ºò±K¦X§@¡A«OÃÒ PICMG ¶°¹Îªº cPCI Express ³W½d¯à°÷º¡¨¬ PXI ¨ÑÀ³°Ó©M¥Î¤áªº»Ý¨D¡CPXISA À³¸Ó¦b¤µ¦~©³«e±À¥X PXI Express ³W®æ¡AGutterman ¹w­p¨ÑÀ³°Ó±N¦b 2006 ¦~¤¤´£¨Ñ PXI Express¥d¡C

²{¦bªº PXI ¥Î¤á©M¨ÑÀ³°Ó¤]µL»Ý¾á¼~¡CPXI Express ³W®æ±N·|ºûÅ@³nÅé§ë¸ê¡A¼Ð·Ç PXI »P PXI Express ¥d¥i¥H¦b¦P¤@¨t²Î¤¤¤u§@¡CPXI ¥d¦³®e¯Ç§ó¦h¶×¬y±Æ«H¸¹ªºªÅ¶¡¡A¦]¦¹·sªº­IªO¥i¥H¦P®É±µ¨ü¤£¦P¶×¬y±Æ¤Wªº PXI ©M PXI Express «H¸¹¡C¼Ò²Õ»s³y°Ó¥i¥H´£¨Ñ¯à´¡¤J PXI¡BPXI Express ©Î¨âªÌ¶×¬y±Æªº»ö¾¹»P I/O ±±¨î¾¹¡C

³æ­Ó¼Ò²Õ±N¨Ï¥Î PCI ©Î PCI Express «ü¥O»P 0 ¼Ñ±±¨î¾¹¶i¦æ³q°T¡]¹Ï 2¡^¡A¦ý¨â­Ó¶×¬y±Æ¤£·|¤¬¬Ûª½±µ³q°T¡CNational Instruments ¤½¥q PXI ¦æ¾P³¡ªù¸g²z Greg Caesar ¸ÑÄÀ¡A·í CPU Àò±o¸ê®Æ®É¡A¥¦¥i¥H±N¨ä¶Ç°e¨ì¨â­Ó¶×¬y±Æ¤W¡A±q¦ÓÃìµ²°_ PXI ©M PXI Express ¼Ò²Õ¡C



¤uµ{®v·|ª`·N¨ì¡APXI ©M PXI Express ¼Ò²Õ¤§¶¡¨S¦³°Ï§O¡A¦]¬°¸U¯àªº cPCI Express ³W®æ¯à´£¨Ñ¹ï²£«~ªº«á¦V¬Û®e©Ê¡C¦]¦¹¡APXI ©M PXI Express ¼Ò²Õªº¥Î¤á¤£¥²¦b³nÅ餤§@°Ï¤À¡CNI ¤½¥qªº Greg Caesar ªí¥Ü¡G¡§²Ä¤@´Ú PXI Express ¼Ò²Õ´£¨Ñ¤@­Ó¨ì®à¤W«¬»ö¾¹ªº¤¶­±¡C²{¦³ªº IEEE 488 PXI ÅX°Êµ{¦¡¥i¥H¥ß§Y¥Î©ó·sªº PXI Express ¼Ò²Õ¤W¡A¦]¦¹¶}µoªÌ¤£¥²¦Ò¼{³nÅé­×­q°ÝÃD¡C¡¨

¤uµ{®v­Ì¬Ý¨ìªº²Ä¤@´Ú PXI Express ¼Ò²Õ¹w­p·|´£¨Ñ°ª³t³q°T°ð¡B®gÀW»ö¾¹¡B¥Üªi¾¹©M¼Æ¦ì¤Æ»ö¡A³£¬O¨º¨Ç¦b¸ê®Æ¶×¬y±Æ¤W»Ý­n¤j³q°TÀW¼eªº»ö¾¹¡C·íµM¡A¶}µo¤H­û­n¨Ï¥Î³o¨Ç¼Ò²Õ¡A¥²¶·ÁʶR·sªº¨t²Î±±¨î¾¹¡A¥H¤Î´£¨Ñ PXI Express «H¸¹ªº­IªO¡C

¬Y¨Ç»ö¾¹¥i¯à¥Ã»·¤£»Ý­n¶W¹L¼Ð·Ç PXI ªºÀW¼e¡A¦p§CÀW¼e­p¼Æ¾¹©M DMM¡CPickering Interfaces ªº Bob Stasonis ªí¥Ü¡G­­¨î¥æ´«¼Ò²Õ¹B¦æ³t«×ªº¬O¾÷±ñÄ~¹q¾¹ªº¤Á´«®É¶¡¡A¦Ó¤£¬O PXI ¶×¬y±ÆÀW¼e¡C

¥Ñ©ó¨t²Î¶}µo¤H­û³£¸Õ¹Ï¦P®ÉÀò±o PXI ©M PXI Express ¼Ò²Õªº¦n³B¡A©Ò¥H¾÷¬[»P­IªO¨ÑÀ³°Ó¥²¶·´£¨Ñ¥i¥H¤ä´©¼Ð·Ç PXI¡BPXI Express ªº´¡¼Ñ²Õ¦X¡A©Î¦P®É¤ä´©¨âºØÃþ«¬ªº¼Ò²Õ¡C³oºØ²V¦X¦¡¤èªk¤]²£¥Í¤F¤@­Ó¦³½ìªº°ÝÃD¡CPickering Interfaces ªº Stasonis °Ý¡G¡§¨ÑÀ³°Ó¸Ó§â PXI Express ¼Ñ©ñ¦b­þ¡H°²³]§AªÅ¥X 18 ¼Ñ¾÷¬[¤¤ªº³Ì«á¤T­Ó¼Ñ¡A¦ý¨C­Ó PXI Express ¼Ò²Õ·|¥e¨â­Ó¼Ñ¡C³o¼Ë³Ì²×·|¾×¦í¤@¨Ç PXI Express ´¡¼Ñ¡C¡¨­IªO»P¾÷¬[¨ÑÀ³°Ó¥²¶·´£¨Ñ¦UºØ´¡¥d-³s±µ¾¹ªº°t¸m¤èªk¡C§ó¤j¥i¯à¤u§@±o§ó¦n
¶}µo¤H­û¥i¯àµo²{¡A¥Î§ó¤jªº 6U ¤Ø¤o PXI¡]233 mm °ª¡^¥i¯à¸Ñ¨M¡§ªý¾×´¡¼Ñ¡¨ªº°ÝÃD¡A¦Ó¤£¬O¥Î±`¨£ªº 3U ¥d¡]100 mm °ª¡^¡C³o¨âºØ¥dªº²`«×¬O¤@¼Ëªº¡A³£¬O 160 mm¡CStasonis ªí¥Ü¡A»Ý­n¤T­Ó 3U ´¡¼Ñªº PXI ¼Ò²Õ¦³¥i¯à¾A¦X©ó¤@­Ó³æ¼Ñ 6U ¼Ò²Õ¡C¦ý¥L¤]»¡¡A«È¤á¨Ã¤£­¢¤Á»Ý­n 6U ¼Ò²Õ¡C

Tracewell ¨t²Î¤½¥qªº°ÆÁ`µô Matt Tracewell »¡¡G¡§¦b­x¥Î»P¯èªÅ¯è¤Ó¥«³õ¤W¡A§Ú­Ì¬Ý¨ì 6U ¼Ò²ÕªºÀ³¥Î¦b¼Wªø¡C¦³¨Ç¨t²Îµ²¦X¤F 3U ©M 6U PXI ¼Ò²Õ¡C¡¨·s«¬ºî¦X©Ê»ö¾¹»Ý­n 6U ¼Ò²Õ¡A¦]¦Ó¦b¤@­Ó¤½¥Î¾÷½c¤º¹ê²{ 6U »P 3U ¼Ò²Õªº²Õ¦X´N¦³¨ä·N¸q¡]¹Ï 3¡^¡C



¦b PXI ªÀ¹Î¤¤¡A¦³¤@­Ó¿W¥ßªº¹ÎÅé¦b¶}µo 6U ¦h¥\¯à¥d¡A¦p Acqiris¡BSEI¡BGeotest ©M¨ä¥L¤½¥q¡C¥t¤@¤è­±¡A³\¦h¨ÑÀ³°Ó·|Ä~Äò´£¨Ñ 3U ¤Ø¤oªº¼Ò²Õ¡CPXIT ªº¾P°â»P¦æ¾P°õ¦æ©x Dylan McCarthy »{¬°¡G¡§§Ú­Ìªº©Ò¦³²£«~³£¥Î 3U ¼Ò²Õ¡C«È¤áµ´¹ï§ó³ßÅw 3U ¾÷¬[¡A©Ò¥H¦pªG¥²¶·ÂX®i¼Ò²Õªº¥\¯à¡A´N§â¥¦©ñ¤j¨ì¦û¥Î¨â­Ó©Î¤T­Ó´¡¼Ñ¡C¡¨

³\¦h¨ÑÀ³°Ó³£´£¨Ñ¿í¦u cPCI ³W®æªº 3U ©M 6U ¼Ò²Õ¡A¯S§O¬O¦b¹q«H¥«³õ¤W¡C¾¨ºÞ³o¨Ç cPCI ¥d¯Ê¥F PXI ¶×¬y±Æªº±M¥ÎIJµo©M®É§Ç¥\¯à¡A¦ý¥¦­Ì¤´¥i¥H¦b PXI ¨t²Î¤W¹B¦æ¡C¦]¦¹¡A¦pªG§A»Ý­n¬Y­Ó cPCI ¼Ò²Õ¤Wªº¥\¯à¡A¨Ã¥B¤£»Ý­n¿W¦³ªº PXI ¥\¯à¡A¥i¥H¦b PXI ¨t²Î¤¤¦P®É´¡¤J 3U ©M 6U cPCI ¥d¡C

¦³·s¦³ÂÂ
¤uµ{®v­Ì°£¤F­nµû¦ô 6U PXI ¼Ò²Õ¥H¥~¡AÁÙ¥²¶·¦Ò¼{«D PXI ªº»ö¾¹¡C¾¨ºÞ PXI ¨ÑÀ³°Ó²³¦h¡A¦ý¨Ã¤£¯à«OÃÒ¤uµ{®v¯à¦b PXI ¼Ò²Õ¤¤§ä¨ì¦Û¤v»Ý­nªº¨CºØ¥\¯à¡C³\¦h PXI ¨t²Î³£¬O²V¦X¤F VXI¡B¾÷¬[»P°ïÅ|¦¡©Î¨ä¥L§Î¦¡ªº´ú¶q³]³Æ¡]¹Ï 4¡^¡C·í¤uµ{®v¤É¯Å¤@­Ó¨t²Î¡A«o¨S¦³¸êª÷´À´«³¯Â«o¤´¦b¨Ï¥Îªº³]³Æ®É¡A³oºØ²V¦X¤Ç°tªº¤èªk´NÅã¥Ü¥X¦Û¤vªº·N¸q¡C¦b²V¦X¨t²Î¤¤¡A³]³ÆÁÙ¥i¥HÄ~Äòµo´§¦Û¤vªº§@¥Î¡A¦Ó PXI ¼Ò²Õ¥i´£¨Ñ·sªº´ú¶q¥\¯à¡C



§Y¨Ï°ò©ó IEE488 ¼Ð·Çªº³]³Æ¤]¯àÄ~Äòº¡¨¬ PXI ¨t²Îªº´ú¸Õ»Ý¨D¡C¬Y¨Ç±¡ªp¤U¡APXI ¼Ò²Õ¥u¯à¹ï¤@­Ó¯S®í­n¨D§@¥XÀ³µª¡A¦p´£¨Ñ¤j¥\²vÅX°Ê¥~³¡³]³Æ¡C¦Ó³q¹L¤@­Ó IEEE 488 °ð±±¨îªº¥~³¡¹q·½´N¥i¥H§¹¦¨³o­Ó¥ô°È¡C

PXI »P PXI Express ¬°³]­p»P§ó·s´ú¸Õ´ú¶q¨t²Îªº¤uµ{®v´£¨Ñ¤F§ó¦hªº¿ï¾Ü¡C¦ý¥L­Ì¿ï¾Ü»ö¾¹ªº«e´£¨SÅÜ¡A§Y­n¦b¹wºâ¤º®Ú¾Ú»Ý­nªº¥\¯à§@¥X¿ï¾Ü¡C§Ú­Ì¥i¥H¹w´Á¡A¤µ«á¥i¯à·|¬Ý¨ì¥]¬A PXI¡BPXI Express¡BVXI¡BIEEE 488 ©M®à¤W«¬»ö¾¹ªº´ú¸Õ¨t²Î¡C
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¦³Ãö PCI Express ªºÂ²¤¶¡A½Ð¨£¡Garstechnica.com/articles/paedia/hardware/pcie.ars/
"What is PXI" National Instruments. zone.ni.com



 

 

 
 
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