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×Ô¶¯»¯×¨ÒµÂÛÎÄ·¶ÎÄ Ä¿ ¼ Õª Òª ¢ñ Abstract¢ò µÚÒ»Õ Ð÷ÂÛ 1 1.1 DSP¸ÅÊö1 1.2 DSP¼¼ÊõµÄ·¢Õ¹2 1.3 DSPµÄµäÐÍÓ¦ÓÃÁìÓò4 1.4 ¿ÎÌâµÄÑо¿ÈÎÎñ5 1.5 ¿ÎÌâµÄÄ¿µÄÓëÒâÒå5 µÚ¶þÕ TMS320C54xϵÁÐDSP¼¼Êõ6 2.1 DSPоƬµÄ·¢Õ¹6 2.2 DSPµÄ¹¦ÄÜÌصã¼ò½é6 2.3 CPU״̬ºÍ¿ØÖƼĴæÆ÷7 2.4 TMS320C54x DSPµÄÖжÏϵͳ7 2.4.1 ÖжϷÖÀà9 2.4.2 ´¦ÀíÖжϵIJ½Öè9 2.4.3 ÖжϱêÖ¾¼Ä´æÆ÷IFR10 2.4.4 Ö´ÐÐÖжϷþÎñ³ÌÐòISR10 2.4.5 ÖжϲÙ×÷Á÷³Ì10 2.5 Á÷Ë®Ïß²Ù×÷11 µÚÈýÕ ¼üÅ̺ÍÏÔʾ½Ó¿ÚоƬHD7279A13 3.1 ¸ÅÊö13 3.2 HD7279AµÄÒý½Å¹¦Äܼ°µçÌØÐÔ13 3.3 HD7279A¿ØÖÆÖ¸Áî15 3.4 ʱÐò17 3.5 ¼¸µã˵Ã÷19 µÚËÄÕ ϵͳӲ¼þµç·Éè¼Æ20 4.1 Ó²¼þµç·×ÜÌåÉè¼Æ20 4.2 ±ê×¼´®ÐнӿÚ22 4.2.1 ´®ÐнӿڼĴæÆ÷22 4.2.2 ´®ÐнӿڲÙ×÷23 4.3 ´ø»º³åµÄ´®Ðнӿڣ¨BSP£©25 4.3.1 ±ê׼ģʽµÄBSP²Ù×÷25 4.3.2 BSP³õʼ»¯ÊµÀý28 4.4 ¶àͨµÀ´ø»º³å´®Ðнӿڣ¨McBSP£©29 4.4.1 McBSPÌØÐÔ29 4.4.2 McBSPµÄÄÚ²¿½á¹¹ºÍ¹¤×÷Ô­Àí29 4.4.3 McBSPµÄÅäÖÃ32 4.4.4 McBSP¶àͨµÀÑ¡ÔñÅäÖÃ37 µÚÎåÕ ϵͳÈí¼þÉè¼Æ39 5.1 DSPµÄÈí¼þ¿ª·¢Á÷³Ì39 5.2 TMS320C54x DSPµÄÈí¼þ¼¯³É¿ª·¢»·¾³CCS40 5.2.1 CCSÈí¼þϵͳÅäÖÃ41 5.2.2 ÓÃCCS¿ª·¢³ÌÐòµÄ»ù±¾¹ý³Ì41 5.3 ϵͳÈí¼þµÄ×ÜÌåÉè¼Æ43 5.3.1 Ö÷³ÌÐòµÄÉè¼Æ44 5.3.2 _INT3_ISR ÖжϳÌÐò45 5.3.3·¢ËÍÊý¾ÝÖÁ7279AÉè¼Æ51 5.3.4дÊý¾ÝÖÁ7279AÉè¼Æ51 ½áÊøÓï53 ²Î¿¼ÎÄÏ×54 ÖÂл55 ¸½Â¼ ³ÌÐò56 Õª Òª£º±¾¿ÎÌâµÄ½Ó¿Úµç·ÊÇÖ¸¼üÅ̺ÍÏÔʾ½Ó¿Úµç·¡£±¾ÎÄÊ×ÏȽéÉÜÁ˹úÄÚÍâÊý×ÖÐźŴ¦ÀíÆ÷£¨DSP£©µÄ·¢Õ¹¼°ÆäÓ¦ÓÃÁìÓò£¬·ÖÎöÁËÊý×ÖÐźŴ¦ÀíоƬ£¨DSP£©ÔÚ±¾´Î±ÏÒµÉè¼ÆÖеÄ×÷Óü°ÒâÒ塣Ȼºó½éÉÜÁËDSPµÄ»ù±¾¸ÅÄî¡¢DSPоƬµÄ·¢Õ¹¡¢¹¦ÄÜÌصãµÈµÈ¡£ÔÙ¸ù¾Ý±¾±ÏÒµÉè¼Æ¿ÎÌâµÄÄÚÈݽéÉÜÁËDSPÏà¹ØµÄ¼¼Êõ£¨ÈçÖжϡ¢´®Ðнӿڵȣ©£¬±¾ÎÄ»¹½éÉÜÁ˱¾¿ÎÌâËùÑ¡ÓõÄÒ»ÖÖÐÂÐ͵ļüÅ̺ÍÏÔʾµÄ½Ó¿ÚоƬHD7279A¡£ ÂÛÎÄÍê³ÉÁË»ù±¾µÄÓ²¼þµç·Éè¼ÆºÍÈí¼þ³ÌÐòÉè¼Æ¡£ Ó²¼þÉè¼Æ·½Ã棬¸ù¾ÝÀûÓÃDSPµÄ¶àͨµÀ´ø»º³å´®ÐнӿÚÓëHD7279A½¨Á¢´®ÐÐͨÐÅ·½Ê½£¬Í¨¹ý¿ØÖÆHD7279A½Ó¿ÚоƬÀ´¿ØÖÆϵͳµÄ¼üÅ̼°ÏÔʾ¡£ Èí¼þ³ÌÐòÉè¼Æ·½Ã棬ͨ¹ýTMS320C54x DSPµÄÈí¼þ¼¯³É¿ª·¢»·¾³CCS¶Ô±¾¿ÎÌâ³ÌÐò½øÐбàÒëµ÷ÊÔÔËÐС£ ¹Ø¼ü´Ê£ºDSP £¨Êý×ÖÐźŴ¦ÀíÆ÷£©£»HD7276A(¼üÅ̼°ÏÔʾ½Ó¿ÚоƬ)£»CCS The design of Interface Circuit Based on the TMS320c5410 DSP Abstract :The interface circuit which discussed by this paper means the keyboard and screen's connected electric circuit.Firstly,this paper introduced the develepment and applied realms of the domestic and international digital signal process(DSP),at the same time,it analyzed the rule and meaning of the arithmetic figure signal processor in this graduate design.Secondly it introduced the basic concept of the DSP,the development and function characteristics of the slice of chips in DSP,etc.Then according to the topic of this graduate design,it introduced some related techniques in DSP(such as break off,a line connects a peoples's etc.)What's more ,this text also introduced a new kind keyboard and screen's interface chips,which called HD7279A. The thesis completed the basic design of hardware circuit and the design of software procedure. In the aspect of hardware,by using the McBSP in the DSP to establish a correspondence communicated method with HD7279A,and through the control of the HD7279A's connected chip ,then to control the system's keyboard and screen. Ih the software procedure's design aspect,by the TMS320C54x DSP gathered software to develop the enviroment of CCS,which can be used to ajust, translate and process the procedure of this lesson. Key words:DSP(digital signal processor),HD7276A(keyboard and manigestations' interface chip),CCS
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