
PCIEµÄ×迹¿ØÖÆ£¬¾¿¾¹ÊÇÑ¡Ôñ85ÕÕ¾É100Å·Ä·ºÃ£¿
Ðû²¼Ê±¼ä£º2023-12-22 13:46
¸ßËÙÏÈÌìÉúÔ±--ÖÜΰ
ÎÒÃǾ³£Óöµ½Ðí¶àϵͳͨ¹ý¸ßËÙÅþÁ¬Æ÷ÏàÁ¬£¬ÐÅºÅÆ¾Ö¤Pcie3»òÕßPcie4µÄÐÒéÀ´×ßÏߣ¬ÍùÍùÐí¶àÅþÁ¬Æ÷µÄ×迹ͨ³£ÊÇ100ohmµÄ±ê×¼£¬¶øPcie3»òÕßPcie4ƾ֤ÐÒé»òÕßоƬҪÇóÈ´ÊÇ85ohmµÄ±ê×¼£¬ÄÇôÕâ¸öʱ¼äÎÒÃǵÄÏß·×迹¾¿¾¹ÊÇÆ¾Ö¤85ÕÕ¾É100Å·Ä·»á½ÏÁ¿ºÃÄØ£¿
ÈçÏÂÊǹØÓÚÏß·×迹µÄһЩоƬҪÇó»òÕßÐÒéÒªÇó¡£
×ܽáÆðÀ´¾ÍÊÇPcie3.0ÒÔÏÂÊÇ100ohm£¬Pcie3»òÕßÒÔÉϾÍÊÇ85ohmµÄ±ê×¼£¬ËÙÂÊÔ½¸ß£¬×迹µÄ¹«²îÒªÇó¾ÍÔ½ÑϿᡣ
ÏÖÔÚÎÒÃǵÄÒ»¸ö¿Í»§¾ÍÓöµ½ÁËÒ»¸öÉÏÃæµÄÏÖʵÎÊÌâ¡£¿Í»§µÄϵͳÊÇÓÉCPU°åºÍFPGA°å×é³É£¬ÆäÖÐCPU°åÉÏÃæÓÐ4¸ö¸ßËÙÅþÁ¬Æ÷»®·ÖÓëFPGA°åÉϵÄÒ»¸öÅþÁ¬Æ÷¶Ô½Ó£¬ÖÐÐĵÄÐźÅʹÓÃPcie3.0ÐÒ飬ºóÃæ¿ÉÄÜ»áÉý¼¶Ö§³Öµ½Pcie4.0ÐÒ飬¶øÖÐÐĵÄÅþÁ¬Æ÷ÊÇͨÀý±³°åÅþÁ¬Æ÷£¬ÈçÏÂͼËùʾ£º
È»ºó¿Í»§·´ÏìµÄÎÊÌâÈçÏ£º
ͬʱ²âÊÔµÄÑÛͼҲ½ÏÁ¿²î£¬ÑÛ¾¦ÏÕЩ¿ìÕö²»¿ªÁË£¬Ò»¸±Ã»Ë¯ÐѵÄÑù×Ó¡£
¶ÔÓ¦CPU°åµÄλÖÃÈçÏÂͼËùʾ£º
ͳһ¸ö°å×Ó£¬ÆäÖÐÓÐÁ½¸öÅþÁ¬Æ÷¶Ô½ÓµÄÈÝÒ׳öÎÊÌ⣬ÁíÍâÁ½¸öû·¢Ã÷ʲôÎÊÌ⣬·ºÆðÕâÖÖÇéÐΣ¬ÎÒÃǵĴ¦Öóͷ£²½·¥ÊÇÏÈ¿´¿´PCBÉè¼Æ£¬È»ºóƾ֤Éè¼ÆÇéÐÎÔÙ¿´ÏÂÒ»²½µÄ°²ÅÅ¡£
·¿ªPCBÉè¼ÆÎļþ£¬Éó²éCard3ÅþÁ¬Æ÷ÉÏTX0ºÍCard4ÅþÁ¬Æ÷ÉÏRX1µÄ×ßÏߣ¬»®·ÖÈçÏÂËùʾ£º
Card3ÅþÁ¬Æ÷ÉÏTX0Ôڵײ㣬ÅþÁ¬Æ÷´¦Ò²×öÁË·´ÅÌÍÚ¿Õ´¦Öóͷ££¬BGA´¦Ã»ÓÐÓÅ»¯£¬ºÍÆäËûµÄÐźÅÒ»Æð×ßÒÑÍùµÄ£¬ÓÅ»¯·½·¨Ò²ÊDzîδ¼¸£¬Ã»ÓÐÀíÓɵ¥¶ÀÕâ¸ùÐźŽÏÁ¿²î£»
Card4ÅþÁ¬Æ÷ÉÏRX1ÔÚArt12²ã£¬³ýBGA´¦Ã»ÓÐÓÅ»¯ÍâÆäËüÒ²¶¼ÓÐÏìÓ¦µÄÓÅ»¯£¬Ö»ÊÇÕâ¸ùÐźÅÊÇÔÚÒ»×é×ßÏߵıßÑØ¡£´ÓÉè¼ÆÀ´¿´Ò²Ã»ÓÐÌ«¶àÎÊÌ⣬½ÏÁ¿Í¨Àý¡£
´ÓÉè¼ÆÀ´¿´È·Êµ¿´²»³öÏÔ×ŵÄÎÊÌ⣬ʳö±ä̬±ØÓÐÑý£¬ÏàʶÎÒÃǸßËÙÏÈÉúÌ×·µÄͯЬÃÇÒ»¶¨ÖªµÀÎÒÃÇÏÂÒ»²½µÄ²Ù×÷£¬ÄǾÍÊÇÊÇÂâ×ÓÊÇÂí£¬À³öÀ´ÁïÁʵÎï°å²âÊÔÒ»ÏÂ×迹£¬¿´¿´×迹¾¿¾¹ÓÐÊ²Ã´Çø±ð¡£
Card3½Óµ×°åµÄϵͳ×迹
´ÓCard3µÄϵͳ×迹À´¿´£¬Ê×ÏÈÎÊÌâ×î´óµÄÅþÁ¬Æ÷×迹ƫ¸ß£¬×î¸ßµ½ÁË107ohm£¬Æä´Î³öÎÊÌâµÄTX0ÐźÅÔÚCard3ÉϵÄ×迹×îµÍ£¬ÔÚ83ohm×óÓÒ£¬¶øµ×°åµÄ×迹ÔÚ90~91ohm×óÓÒ£¬´Ëʱ´Ó·´Éä½Ç¶ÈÀ´¿´£¬TX0Ïß·ÉϵÄ×迹ºÍÅþÁ¬Æ÷µÄ×迹Îó²î×î´ó£»
Card4½Óµ×°åµÄϵͳ×迹
´ÓCard4µÄϵͳ×迹À´¿´£¬ÎÊÌâ×î´óµÄÈÔÈ»ÊÇÅþÁ¬Æ÷×迹½ÏÁ¿¸ß£¬×î¸ßµ½ÁË107ohm×óÓÒ£¬×î¸ß×迹ÕýºÃÊdzöÎÊÌâµÄRX1Ðźţ¬Card4ÕûÌåµÄ×迹¶¼ÔÚ88ohm×óÓÒ£¬¶øµ×°åµÄ×迹ÔÚ94ohm×óÓÒ£¬´Ëʱ´Ó·´Éä½Ç¶ÈÀ´¿´£¬RX1Ïß·ÉϵÄ×迹ºÍÅþÁ¬Æ÷µÄ×迹Îó²î×î´ó£»
´ÓÁ½¿é°å×Óϵͳ×迹µÄ²âÊÔЧ¹ûÀ´¿´£¬¶¼Óм¸¸ö¹²ÐÔµÄÌØµã£ºÊ×ÏÈÅþÁ¬Æ÷×迹ƫ¸ß£¬Æä´Îµ×°å×迹¿ØÖÆÔÚ92~94ohm×óÓÒ£¬¶ø×Ó¿¨²»¹ÜÊÇCard3ÕÕ¾ÉCard4£¬×迹Ӧ¸ÃÊÇÆ¾Ö¤85ohmµÄ×迹ҪÇóÀ´¹Ü¿ØµÄ£¬ÕûÌå×迹¶¼ÔÚ90ohmÒÔÏ£¬ÁíÍâ³öÎÊÌâ½Ï¶àµÄÁ½¸ùÐźÅÔÚϵͳÉÏ×îµÍºÍ×î¸ß×迹µÄÎó²î×î´ó£¬Ò²¾ÍÊÇ·´Éä×î´ó¡£
¿´µ½ÕâÀÎÒÃǵÄÎÊÌâÀ´ÁË£º
´Ó½â¾öÎÊÌâµÄ½Ç¶È³ö·¢£¬Card3ºÍCard4ÅþÁ¬Æ÷ËùÔÚµÄ×Ó°åÔõôÉè¼Æ¿ÉÄÜ¿ÉÒÔ½â¾öÏÖÔÚµÄÎÊÌ⣿½Ó´ý¸÷ÈËÖªÎÞ²»ÑÔ¡£








