游客:
注册
|
登录
|
会员
|
统计
|
帮助
我要委托设计网论坛
»
???????·×¨??
» zt???????è?????????¤?????? ???????è??
‹‹ 上一主题
|
下一主题 ››
投票
交易
悬赏
活动
打印
|
推荐
|
订阅
|
收藏
标题: zt???????è?????????¤?????? ???????è??
zona
超级版主
UID 3
精华 0
积分 503
帖子 532
阅读权限 101
注册 2003-12-16
状态 离线
#1
使用道具
发表于 2004-2-2 13:30
资料
个人空间
短消息
加为好友
zt???????è?????????¤?????? ???????è??
?????è?????????¤?????? ???????è??
×÷????chinawei97
???????è??
???ó????????????????220V??????????????????????????
?????????????è???????????????????????ü?à???????????????????????é?°????????????
±??????????÷??????????????????·??????????ù??????????×??è±??????????????÷?????ü?ò
?à?????¤?¨°??????÷?????¤×÷???????á??10???????ü?ò??????°???
???ó????????×?????????????×è????????????·?????
???????????è?????????????ò???à??????????????????????????????×è??????????????????
???????÷??????????°???????????????±????????????????????÷??????°?????????????????
???????·?????÷32????????????244/245?????ó??×????°???ü???????????????°??????????
??????????????×è?????¨??????8??????????????????????????????????????
???ó????CPU??FPGA????????????I/O?????????í?????????ü??×?°??????ó????
????????????I/O???????ü?????°??????????????????????????????·?????????????????
??????MOS?÷?????????ù±????????????·??·?×???????????°??ü???????°?????????????á??
??°????????÷???ù??×?????°ì·¨???è???????¨?±???????????????ü??????????????
???ó????????FPGA?????????à???????ê???????é·???°?
??????FGPA????????±?????????·??÷?????°??·?×?????????±????ù????????????FPGA??????
???·?????±?????????????à??100±???????????????·?×?????·??÷??????????FPGA???????ù
±?·?·¨??
???ó????????????????????????????????????
???????????????????????????????????????·?¨?????ü?÷???????????????÷?·?¨??????
ABT16244?????????????°?????ó??????1??°??????ü????±ê??????????????60??°???????
?¨???????????·?·????×è???????ú??????????×??ó????60*16=960mA???±?????????????÷??
???ó?????????????????í??????
???ó?ù???????÷???????à???????????????é°?×????è????OE??WE????????????????????????
°??????ù????×÷?±???????????ì?à????
???????ó??·??????÷???????????????§?±?¨????OE??WE????????±????????§?±?ó100±???
?????ù??????????????CS???????????????????ú×????ü???ó???é????????????????????????
?í????
???ó????????????????????????°???????????????????????????
?????????????????¨???????¨??100BASE-T??CML?????????????????????????????ó????????
?¨???è????????????????????·?????????×??????óTTL??????×è??????50?·?·??????????20
?·?·???????????????ó????????×è???°???????÷??·????ó????????????·¨?????????í??????
·ù????????????????????????°??????????????????????????????±??????×è???????à??????
??°ì·¨×????ê?????????ù????TTL??LVDS??422????????????????×?????????????????????
???ó°??????????????????????±?????????í????????
???????????????????è?¨?????·???????í????×?????????????????????·?????????????????
·?×??????à?????í???????????????í??????????????·????????¨?à?????????÷±??????à????
????CACHE???????°?±?ì???????¨?????ù?ù???????????§????????????×è???°???ü?ù??????
??°??????¨??????????????????×÷?????ó???±?×??
???í?ì?????????????á°ò±?????
????
项目组成员
UID 23
精华
2
积分 303
帖子 322
阅读权限 10
注册 2004-2-17
状态 离线
#2
使用道具
发表于 2004-5-7 04:14
资料
个人空间
短消息
加为好友
???????¤????????±?????
??????±???????????????
???????¤????????±?????
???ó????????????/????????×è???à?ó??×è?????????ó????????????5K°?
??????????????????5K??×è????×????ü????4.99K?¨????1%??????????5.1K?¨????5%????????±?·?±?±???????20%??4.7K??4±???2±???20%????????×è×è??????1??1.5??2.2??3.3??4.7??6.8?????à±??¨??10??????±??????à??????20%???????????????????????????????????????ü??????±????????ü????????????±???·?????±???????????????????????
???ó??????°???????????????????????????????????±?????±????????ü°?
?????????ü?ì???????????????????ó???¨5MM??????·?×°?????????????ì???????ê????????°?????5?????????????????????ü?????ê??·??÷?????÷?????????ì???????????¨???????????????????ó????±??????°?????????????????????????ü???????ú??????????????????????????
???ó??????????????74XX???????·??????????????????????CPLD°????????????à??
??????74XX???????·????????????CPLD?????????????é???¨GAL/PAL?????????é??????????????????????????±??á????N±????????????ú?ú?????????¤×÷???í??±????¤×÷??
???ó?????????????????ó????????°ü?¨MEM??CPU??FPGA???ù??????????????×??ì??
??????????????????????????????????·????¤×÷??????×????????÷?????????á?????????????????????à??·?±????í???????????ê???????????????ó???????°?ì??
???ó??????°?×???PCB?è?????ó??????????????????????×?????°?
??????×???????±??????????ü?ó??PCB?????????±?ú?ú±??????????à???à±??????×?????ú?????ó???ú?·????PCB?§???????ù???????ò???????????ò?????????????í?????×???????ü??·?±??°?ì??PCB?????·????×ê?·????????????????????????????±????????????????????í????
???ó?ù?????ò???????¨???????????ú???¤???????§???????????????ü
??????CPU?????????????÷???????????????ò?????????????ú???±?à?¨???ì?±???á?????????ò?§??????????????CPU?÷?????????????÷?????ù????????±???????????????CPLD/FPGA?è?????à????
[???ù±???????2004-05-7 4:21 AM????±à??]
??????
????
项目组成员
UID 23
精华
2
积分 303
帖子 322
阅读权限 10
注册 2004-2-17
状态 离线
#3
使用道具
发表于 2004-5-7 04:14
资料
个人空间
短消息
加为好友
???????¤???????????§??
???????¤???????????§??
???ó???????÷??100M??CPU???????í70%????200M?÷????????????
???????????????í???????????à???à?ù???ò???????¨?????????????±??°??????????÷????CPU???ì??????·????ì????????????????
???ó????CPU???ó??????CACHE?????????ì??
??????CACHE?????ó?????????¨?????????????????á???????????é??????±?CACHE·???±?????CACHE???ì?????ò??°á??CACHE????????±????????à?????????????á?á???????§?????ù?????¨??????????°????ò??????CACHE??????CACHE?????ò??????????????·???????????????????·??????±?????ó???ò?è????????CACHE???????°?é?ó?????????°?????ü?ú?????·?????¤???°??×?·??§?????????????·????±?CACHE?ó????????????????·??????·???°????????????
???ó?????????à???????×???????????????é???????????????ì??°?
???????????????±?????????????¨?ì????????????????±??à???°?????????????????ó???????à?????????á?ù????????±????????????????????à??????·±???°??CPU?????ó???????????????????????ú?????????§?????????????????????é??·???·????????ó?á???§???????é?????±?????ú×????±?????ó???ù??×?????°ì·¨???????????é??????????????????°????????ù???????????í?ê????????
???ó?????????÷???????±?ò?????§????????????????????????
??????BSP???????÷?????è??????????????°?×?±??????????è?????????????????????á??×????¤×÷???????????????????????????í?÷???????±°?????????·??????á???§??????RAM????????????70ns??×?????????40M?±???è3?????????????±??????75ns????????×?????????50M?±??±????è??4?????????????????±????·???????80ns??
???ó????????CPU???í????????????????·??????í?????í???????á????±?
??????????°á×??·????????????????±??????????§??????±???????×÷?????????à??????????°???????????????CPU?è???????????à???????ó?????·?¨??????????????CPU?????÷???ú??????1+1?????????ü2???§?ò±?????1??
???ó?ù??????CPU????DMA???é?????ü??°á???????¨?ì
????????????DMA????????????×????ó???±?????????è±?????????????????±???????±??????????à????CPU????DMA????????????????????????DMA???°??×?????×?±??¤×÷?¨?è???????·???¤???????????????±?ù?ù???????????????????????ó????????????°á?????????è?????±????????±??í????°á???ì?????¨???è?????????????????·??×????????¤×÷????????????????°á????×?????????×?????×?±??¤×÷????°??????°?????÷?????§???????????ù??????DMA?????ó?????é????????
??????
????
项目组成员
UID 23
精华
2
积分 303
帖子 322
阅读权限 10
注册 2004-2-17
状态 离线
#4
使用道具
发表于 2004-5-7 04:15
资料
个人空间
短消息
加为好友
???????¤???????????ê????
???????¤???????????ê????
???ó??????????????????·?????????????????
??????·??????????????????????????ù?????????ú?????¤????????????±??????ü±????????????????????é???§???ò±???·????????????????ù??????????????????????????????????????°????????¨?¤????°ü???×??°ü??×??ó?????ò???¤???ò??????0xFF???±??????????????×??????±?????????à????WE????????????????RAM?????ü???????á??WE?ú?ú??????????????????????·??§?????????±8??×??????±??0±?1?±?????ü??????????????×??????á????·????á????????????????????×??????à????
???ó????100M??????×????????????????????????????±????????????8K?????????ó
??????????×?????????°??????????????ò?±????????????±????????ù?????????ù??????±???±???×??????¨???±????±????±??????????·??§????????????°???????°??????á???à?ó?°?ì?¨?±??????×????????????????ù????????×??ó?????????????±???????????????à???¨???????×·??§?????í???????ü??±??????????ü????±???±??¤?????÷??????????±??±???è?????¨·??§????
???ó????????????×???????±????±????????????
??????±??????????????×·??§?????í????????·????????????ó???????????????????????×·????¨?????¨???¨??×??????ú?????¤?¨???¨???à?ú????×????????????????????×????±???????????×??í????????????????????±??????????ò????????????????????????????????????
???ó??????±??¤???????????????????????à?à????
??????×??????????????????à?????±???á?ü???????????à???????????ò??????·???±????????§???????????÷???÷???ó???????????????è?????ü????????????????·?????·?????°??????????á?????ù?????????????è????????×???°????á??×???
???ó???????????????é·?????????????????????
??????×??????ò???±???????????????????±??????????±??±???±????????·????????????????????????ú?ú·????????ò?????·×è???????ù???ì?????????????????????????????????????????°????????×è??±??????ü??????·?????????????????????PCB?????????á?????????ó????????????????????·??§?????????×???????????????????????????????????????à??????±?????????×è???ú?ú±??????????????ò??????·????¨??±????ì???????????????????ò????????????????????????·????????????????????×??????????????
[???ù±???????2004-05-7 4:22 AM????±à??]
??????
????
项目组成员
UID 23
精华
2
积分 303
帖子 322
阅读权限 10
注册 2004-2-17
状态 离线
#5
使用道具
发表于 2004-5-7 04:23
资料
个人空间
短消息
加为好友
???????¤?????????????è??
???????¤?????????????è??
???ó???????é??°??????ú???ú?ú?????????¤?±????????·???????????
???????????è????????????±???·????à????·????????????????á???á?????ù???????¨??????I/O????·??§?????÷???±?ò??????PCB???????????????????????????????é???é?¤?????????????ú?·???????????????????ú?·?????????ê??IC?§?????????ú?ú??????????°?×?????×????????ò??????????????????·??ú????±????????????????????á??·??§?????????????á??×???????????±???????????????????±??????????á·??§???????????÷???¨???????±????°?×?????×??????????????????ü????????
???ó????????·????·???????ó?í?????ù?è???????á??????
???????????????à?????????±?????í???????????í????????·??ú???????????ò??·??????ó??·¨?¤???á????????×÷???è???????·±??????í??×??????ù????×÷???????????????±????·??ú????????????
???ó???????§??×÷?í?ó·??ú????????????????
?????????ó???§????°????á??×÷?????í?????????§??????????·??í???±?ò???????????í?????ü?????ú?????í???????·????°?×????ù???????§????·????÷???í?ó±???????±??¤??
???ó??????°?×????????ò????????°?×?????????????????????????
???????????÷????????????????????×??????????????????ò????·???????????????????×??????ü???????????°?ì????????????????·????????????ü?????????????¤×÷?????????×°??¤??????????????????????????????????????????????????????
??????
fenggper
新手上路
UID 55
精华 0
积分 2
帖子 2
阅读权限 10
注册 2004-6-1
状态 离线
#6
使用道具
发表于 2004-6-1 17:47
资料
个人空间
短消息
加为好友
??????????????????
????????????????????
zona
超级版主
UID 3
精华 0
积分 503
帖子 532
阅读权限 101
注册 2003-12-16
状态 离线
#7
使用道具
发表于 2004-6-1 21:00
资料
个人空间
短消息
加为好友
?????è???±?ò???è???±???±??????°???????
???í?ì?????????????á°ò±?????
投票
交易
悬赏
活动
我要委托设计网论坛
商务区
> 售前服务区
> 项目发布区
电子技术 专区
> 硬件电路专区
> 嵌入系统
> PDA DIY
PCB/EDA专区
> EDA交流
> PCB技术
工程技术专区
> EMI/EMC电磁兼容
> 生产测试技术
休闲娱乐
> 键述我心
> 精彩贴图
> 家居生活
> 超级灌水
其他
> 其他技术区
> 回收站
日常事务
> 论坛事务
> 意见和建议
> 斑竹会议室
当前时区 GMT+8, 现在时间是 2024-11-24 04:50
Powered by
Discuz!
5.5.0
© 2001-2007
Comsenz Inc.
Processed in 0.013366 second(s), 7 queries
TOP
清除 Cookies
-
联系我们
-
我要委托设计网
-
Archiver