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UID 79
精华 0
积分 710
帖子 701
阅读权限 10
注册 2004-8-30
状态 离线
发表于 2006-6-22 17:25  资料  个人空间  短消息  加为好友 
???????à????×?????????????????-zt

???????à????×?????????????????

?????à1 ?ù?ò??2
?¨12?????°???????§?????????? ????????518055??
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?????ó?§MOTOROLA MCU????????????



[?? ??] ??×???????????????????·??????÷????·×·×???¨?à???????????§?·??????????????????·?·????????è?ó????????×?????????????±????×?????à????×????????????????í×????????ê?????????????ó×???????????Motorola?????ú?????????????????????ü???????????ì??????????????·?????·??????????÷?????????°?????????ó????????
[???ü×?] ?à??????Motorola?????ú???ì???????????ó????
????·??à?? G123 TP45
[Abstract] As the developing of the educational information technique?? many academy take great effort on building multimedia network educational environment??Accord with the education demand?? we developed a kind of embedded center control system??The article pays much attention to the theory of multimedia center control?? and then emphasizes on key technique witch take the Motorola SCM as core?? such as extending storage??audio and video switching matrix ??and the incepting ??analysis and emission of infrared remote control code??
[Keyword] multimedia Motorola SCM Infrared remote control matrix switching
1 ????
???à???????ú???????????ú±í????????????????????????????±?×????à?ú??·????????±?????????????????????????????ó?????÷?????????????????????????????????????é±???????????×???????????×????ù?????????????????°????????????×??????é???à?????í?????°???????????°???????????????????é?????????§?°?·?????????à????×????????????????ú?°?????????????????§?ì?ò?????????????????ù??????×??????????????????????????§?ú?á??·á???ú?????§???????????????????§??????????????
??×????óPC?±?ú"???????á?????????????????????????????¤??????×????????ì?ò??????????????????±???·??????????÷???ì?ò?????????ù??·????????????????????ú?????????à????×???????????
2 ?à????×????????????????í?????ü????
?à????×????????????????????ú???°?ú?ú???à?????????ú???????????¨?????°?ú?????????????è±????°???ü?·???è±????ú???????????????????ù?????§?è??????????????·??à???????????÷???·????
?????????à????·???????????????·?????????·??è±??????? 1?ù????MPU?¨?÷???í?÷????·??§?°???????è±??????????????????è±??????????úVGA??????????·??·?????????????ú???°?ú?ú????????????°??ü???¨?è?????????????????????°?±??????????????????????
??????????????×???Flash Memory ?????????????í?÷--Motorola MC68HC08GP32×÷???????????÷?????ü???±?à???????????????í???í???????ì??????????????±??????????°?????ì?????????????ê?????????????ó??????????????



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UID 79
精华 0
积分 710
帖子 701
阅读权限 10
注册 2004-8-30
状态 离线
发表于 2006-6-22 17:27  资料  个人空间  短消息  加为好友 
2.1 ?ì?????????÷
?ì??????·???????????±??????????????ì??????·????÷??????????±à???÷???÷???ü??·????????????±°??????????÷???????????????????????¨???¨???????ó·????????????????÷??·?·¨???????í???÷???¨PWM?????????????÷???¨PPM?????????ì?????????????í????????2?ù??????????????·????÷·????????????????°??·??ó?÷?????????÷?¨????????·??ó?ó????????????×??ó?????????í?÷???????????????????????è±???



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UID 79
精华 0
积分 710
帖子 701
阅读权限 10
注册 2004-8-30
状态 离线
发表于 2006-6-22 17:28  资料  个人空间  短消息  加为好友 
?ì???????????????÷°??????????ì???????????????????????÷??°???????×????????????????ó?¨?????????·????38KHZ?÷?????????÷???????????????¨?????????????ì??????????????????????·??ó???????????÷???????????????????ì???????????????÷×??????????????·??CX20106A?????? 3?ù?????ü???°??·??ó??×???????????????·ù·??ó??·????ì?¨?????????·×é??????????R1???°??·??ó?÷??·?????×è????±??ü?ó?????????÷·??ó?÷??????R2???ì?¨?÷?????????÷????×è??R3??????????????×è??C2???ì?¨??????C3????·???????Vp????????????????????????????????



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UID 79
精华 0
积分 710
帖子 701
阅读权限 10
注册 2004-8-30
状态 离线
发表于 2006-6-22 17:30  资料  个人空间  短消息  加为好友 
2.2 ?ì??????±à??
???°???÷?ú???÷?ú?ú?§????????????±à???°???÷????????????±ê×???????×???????????PWM??(?????í???÷????)??PPM??(?????????÷????)???°?????í????±í??1????????±í??0???ó???????í?????ù?????????????í???????ù???????í???ú±í1???????????ú±í0???ó?à?????????????ù????·?·¨±í??"0"??"1"??????tw???¨??tp0??tp1?????? 4?ù????



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UID 79
精华 0
积分 710
帖子 701
阅读权限 10
注册 2004-8-30
状态 离线
发表于 2006-6-22 17:31  资料  个人空间  短消息  加为好友 
???? 6?ù?????????????????????????????????????????????????????í??tw?????°???????????à??td??????????????????×é?¨tw??td????±í??????????????????????????????????????T??±í??????????T°ü?¨tw??td????·??????ù????????????????????×éT?¨tw??td????±í???÷?????????????????????ù??×é??±í??T?±??T????T????????????????????±í??
2.3 ?????????ó????
????1??????????????????????????????????????????·??????è????/???????ó???????·???ê?????à?·????????????????·???MT8816??8??16???????????ó???ü??7??128?????·?????÷??128???????????????÷??8*16?????????ó??×é?????ü?????·???í????7?ù??????????PA0~PA6 ×÷??MT8816???????·???????·????????PB0??PB3·?±?×÷?????¨????ST??????????DI??????????CS??????????RESET??ROWo??ROW15×÷????????COLo??COL7×÷??????????16?·??????8?·??????



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UID 79
精华 0
积分 710
帖子 701
阅读权限 10
注册 2004-8-30
状态 离线
发表于 2006-6-22 17:32  资料  个人空间  短消息  加为好友 
?????????????????????ú????CS???????????????????????·?????ó??ST???????????????·??????×??ó????ST????????????????ST??????????????DI?????????????????????ù???????????????¨??????DI???????????ò?à?????????¨????DI?????????ò???????????±????DI?????????÷?±???????à???????·???????????????ü????????????????????????????????????????????????????RESET????????????????????CS?????????????ù??????????????????×?????
2.4 VGA???ó????
VGA±ê×??????ù??CGA??EGA??±ê×????????ù???ü????????×????????????????????????????ò????TTL??×?????±??????????????????ó?ó?????????ò?????????????à???????????ó???ù????????????·????ù????VGA±ê×?????15???·D?????·??VGA???ì?????????????ù?????????????????????????ü??×???·?±?????640*480????????31HZ????????60HZ?ò70HZ???ü????????CGA??EGA????±ê×???????????CGA?¨??200????????·????????????????¨?è????????????200?????????????????????à???????????????????????ù??
MAX465???????úMAXIM?????ú?ú?????????????ü?á??????×é?¨3??????????×é?¨3???????????????????ù?·?????????·???????ü????2±????????????????????????????í??90Mhz?????????????¨??2±???????????
??±??????????÷??????VGA?????ù?????????????????????í??????????????MAX465??????????????
2.5 ???????í?÷
Motorola???????????ú?????°???????ú??×?????8???????ú???????????????????????????·???à?????à???????ò???????????÷?????÷??±í???????¨?????ò?×????????????·???????????????·?????????
MC68HC08GP32????HC05±à????????????512×???RAM??32,256×???Flash Memory??????I/O????????????????????????I/O????????????I/O????????×???PWM?¨Pulse-Width Modulation???????????±?±??RTC???????????????à??????16???¨?±?÷/?????÷????????????×???????±???????????×???Watchdog ?à????????
2.5.1????EEPROM????
???????????????????ó???è?????????????????????§?????????????è??????EEPROM?????????ü?????±?¨?è?????????????ú?ó???????????ò??????24C32A?????ù??I2C??4K*8??????????/??EEPROM???ü??????????×???????????????????????8????????7?ù????????????????EEPROM??
???±???????è±??????????¤?????????¨?????????ì???ó???ò????????????·?????????????????????????????????·?????????????·????????????????é?????÷???????????????¨????????????????·?±??????÷????????????????????????


??7 EEPROM????
?????????÷?????????????????????ú?á???±???????¨SCL????????×???????/????????8?ù??????????????????°?°ü?¨??????×????????????÷??????8?????·×?????????8?????·×???????/???????????????÷????/??????????·?????????


??8 24C32??/??????
2.5.2??????×???????±???
??±????????è????±????÷?ó?????????????????????????÷?ó????????????100HZ????????°??????????????ú???????÷°????¨?????????????????????????±???¤????????????±??????????????????????????ê??????????
MC68HC08GP32???????÷?÷???????????????????é??????????×????????é?????à?????????????????????????±????????·??ú?ò????·??ú±????±???????¨????????×???????·??ú???????¨??????±??¨???????¨????±??????????????????????¨?±?÷??×??????¨??????±??ó??°?×????????????÷?±?°????????????????×??????÷??????????????×??????????÷???è?¨???í??????×??????????????ú?ú??????????×??????????????????í?í??????????????·??ú???±???ò????·??ú±??????±????


??9 ??????×????í ????????????????????????10 ????±??????í
??????×????é?????í????9?ù?????¨??????????????????????????±????????????????????????????????í????±??????????????é???????????÷?ó???ì??????????????????
????±??????????????±?????è?????ü?÷????38KHZ?????¨??????38KHZ?????¨?????????ú?ú???????í???ú?ú????±????????????????í??·?????
????????×????é?à??????MC68HC08GP32????????????±??????????é?????ü????????·??????·???????±????????????10?ù?????????é?????????¨???±???????è??????????16??×????????????÷????????????????????????±????????÷????±??????????±???????????±?ò??????±??????é?????¨?±?÷?¨????×??????????????÷???????????¨?????????????????¤?????¨???????????ù???¨??????????±????????÷???????????????????????????¨?????????????????é?????·?????????¨????????????
2.5.3?????í???è??
?????í???÷???????ü???¨?è??????????·?±??ê????·??????¤×÷?????????ì???????????????????????????????ì????????????·????????????????§?÷????????????????/???????ó???????·?????????????÷??????11??


??11 ?????í???÷????
3 ?á????
?ü20?ê???????????ú?????????????????????????????????÷???ì?ò???????????ú×÷???à????×????????÷?????????????????????ú?ó???????????????é?????????????ü?????¨??????±??ó?ó?á????
???ì?????????????÷?????????°?÷??·????????????????ù??????±à??·????ò???????????ü????±à??·?????????·????????§?ó???????§?????????è±???????????±à??·????ó?à?????????????á?????????è±????????????à???????????????è±??????????????ó?????????ò???á?é???¨????????????±à?????é???????????ú???§???ú?·??????????????±???????????×÷??

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