标题: 44B0X????????????????×è?????ò
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发表于 2006-2-2 03:00  资料  个人空间  短消息  加为好友 
44B0X????????????????×è?????ò

?????????????á????????44B0X???·°?????SDRAM??44B0X???????ù????????????22?·????×è???????á?????????ê????(SI)???????????°?ù???×???????????????????????????????????é???????á?????????à??????????????????????1???????é?????è????????×è??2??×è???????·?¨
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    ???é???±????????????50MHz?±??????????±?????????????????????±?×??????????????è?????????????±???????????????????±?ò???????°?????????????§?????????ê????(SI)??????±???????????
    ?±?????????¤>(???????????????±??/???????????????¤????????????????????±?)?±???è????????????????????????????????????×è?????????á????????·??????ù????????????????????????????????·?????????????·???????????????×???????????????????????????????
    ?????è????????×èR0????????????×è????Z0??????×è??RL??×??í????×????±????Z0=RL????·?????????????????????·???·??????????????ó?à???÷????????FS44B0X??????????×è??·??????¨???????????ü????????????????????????×èRS?¨????10????75????????????????????????????????????????????×è?????ù????????????×è×è??????????????????×è?????ó????????????×è???¨?á????×è?á?????????????????????????????????è????????????×è?????è???????à??????????????????
    ×?????????????×è?????é???è???????????????????ó???????????????????????????è????·???????????????°?SDRAM????????SCLK??40M-66MHz×ó???????????????¤???ù??????22?·????????×è?????±???????à?????????????????????????????????????????í?í??????·??????????????????¨????????????????22?·????×è?????ü???????ü44B0X??????SDRAM??
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