【正文】 許多應(yīng)用都需要兼具智能控制和數(shù)字信號處理兩種功能，因而，把DSP和微處理器進(jìn)行結(jié)合，用單一芯片實現(xiàn)這兩?！?第五，DSP + MCU，也就是微控制器的融合。MC56F82xx是基于56800E內(nèi)核DSC系列的成員，它結(jié)合了微控制器(MCU)的功能和數(shù)字信號處理器(DSP)的處理能力，提供廣泛的外設(shè)，包括帶有NanoEdge布局技術(shù)的高速脈寬調(diào)制器以及兩個超高速模數(shù)轉(zhuǎn)換器(ADC)。單片DSP又被稱為DSC(digital signal controller，數(shù)字信號控制器)，這也是SOC的概念，通過先進(jìn)技術(shù)集成更多功能和接口來降低整體板級成本、功耗和大小，包括各種模擬數(shù)字片上外設(shè)、硬件加速、通用處理內(nèi)核?！盇DI的技術(shù)市場經(jīng)理張鐵虎對此表示認(rèn)同：“今后幾年，我們可以見到DSP向著32位的方向發(fā)展，同時支持整數(shù)和浮點算術(shù)指令集。德州儀器半導(dǎo)體事業(yè)部業(yè)務(wù)拓展經(jīng)理丁剛表示：“在保證高性能的同時，統(tǒng)一定點和浮點支持更便于編程。該趨勢與通用處理器的發(fā)展方向保持一致，最早處理器也是整數(shù)運算單元和浮點運算單元分離的，現(xiàn)在的處理器都集成了整數(shù)和浮點計算單元。例如德州儀器的C66x高性能多核DSP系列，最高可集成八個C66x內(nèi)核，總共可達(dá)到320 GMAC和160 GLOP定點和浮點性能，非常適合醫(yī)療和高端成像、測試和自動化、高性能計算和核心網(wǎng)絡(luò)等高端應(yīng)用。這點得益于半導(dǎo)體制造工藝的發(fā)展，單顆芯片上可以集成越來越多的晶體管，也符合處理器整體多核化的趨勢，因為考慮到功耗的原因，單一內(nèi)核通過提高主頻的方式已經(jīng)難以為繼。這是CEVA針對4G應(yīng)用推出的全新構(gòu)架，直接針對高吞吐量高性能的應(yīng)用需求?，F(xiàn)在，幾乎所有的DSP廠商都使用了VLIW構(gòu)架，這一指令構(gòu)架大大加強了DSP處理器的指令并行能力，而SIMD指令集能夠大幅度提高數(shù)據(jù)并行處理能力，在通用處理器上也得到了大量使用。s main structure is the single bus architecture, while it has some Harvard bus architecture, that is, a program bus plus a set of data bus. The nest step of MCU is toward the Harvard bus architecture. However, limitation of this bus structure makes it less strong than DSP in realtime digital signal processing. The earliest platform with both the DSP and MCU functions was used in the field of engine control, and then it extended to voice processing, sensor processing and other applications, replacing the original digital analog filter. Today, this platform is more and more applied to the puter, telephone equipment and Ethernetrelated areas, while also in the medical care, electrical appliances, air conditioners, uninterruptible power supply, switching power supplies and semiconductor lighting. When the nextgeneration of MCU with DSP capabilities is available, the difference between entrylevel DSP and general MCU will bee smaller and not clear. In the foreseeable period of time, wireless applications will continue to be marketdriven engine of programmable DSP, and the embedded DSP market is more potential. Whatever form, DSP technology is still a hub for the emerging IP telephony market. Without DSP technology, the access to Internet and multimedia is impossible, so is the wireless munications. Therefore, DSP industry will continue to be the driving force of semiconductor industry . 參考譯文 DSP未來發(fā)展五大趨勢窗體底端在4G無線通信領(lǐng)域，數(shù)據(jù)吞吐量已經(jīng)達(dá)到了3G時代的100到1000倍；在多媒體處理器領(lǐng)域，每天都有新的標(biāo)準(zhǔn)涌現(xiàn)出來；在更多其它DSP應(yīng)用領(lǐng)域，密集的數(shù)據(jù)處理器需求不斷給處理器設(shè)計團隊帶來新的挑戰(zhàn)。s MC56F82xx series. MC56F82xx is a member of DSC family designed on the basis of 56800E core. It bines microcontroller (MCU) function and digital signal processor (DSP) processing power and providing a wide range of peripherals, including PWM device with NanoEdge highspeed layout techniques and two ultrahighspeed analog (ADC). Charlie Wu, senior systems engineer of Freescale Microcontroller Division said: The DSC will be widely used in the field of new energy, such as digital power, solar power and the management of battery charging of hybrid electric vehicles. Fifth, DSP + MCU, which is the integration of microcontroller. Low cost microcontroller is the main generalpurpose processor for the task of smart directional control. Although it works well, its digital signal processing is relatively poor. DSP is just to pensate for this dysfunction. Many applications require both intelligent control and digital signal processing, therefore, the bination of DSP and microprocessors in a single chip will greatly accelerate development of the personal munications products, smart phones and wireless networking products, thus simplifying design, reducing PCB size, reducing power consumption and lowering overall system cost. “32bit MCU integrating DSP instruction is the development direction. This development is out of the cost requirements. Many analog control circuits will be replaced by digital control (software). Charlie Wu fromFreescale39。s Technology and Market Manager agrees: in the next few years, we can see DSP develops toward the 32bit DSP direction, while supporting integer and floating point arithmetic instruction set. Fourth, singlechip DSP. Singlechip DSP is also known as DSC (digital signal controller, digital signal controller), which is the concept of SOC. It can reduce overall board cost, power consumption and size through integrating more functions and interfaces with advanced technology, including a variety of simulation Digital onchip peripherals, hardware acceleration and generalpurpose processing core. TI 39。 in many other fields with DSP applications, the demand for data intensive processors poses new challenges to design teams. As more and higher requirements for new applications, the future development of DSP shows the following five trends: First, with the increased capability of DSP core parallel processing instructions in, SIMD (single instruction multiple data) and VLIW (very long instruction word) will play a dominant role in the [5] 李維堤, 郭強. 液晶顯示應(yīng)用技術(shù)[M]. 北京: 電子工業(yè)出版社, 2000.[6]趙明忠，DSP應(yīng)用技術(shù)，西安:西安電子科技大學(xué)出版社，2004. 156162[7]:[碩士學(xué)位論文].包頭:內(nèi)蒙古大學(xué)，2005[8]胡漢梅，程妮，2007，22 (5):623628[9]張勇，C/C++語言硬件程序設(shè)計基于TMS320C5000系列DSP[M].西安電子出版社，2003.[10]SinIoniX公司．ST7920A中文字型點矩陣LCD控制／驅(qū)動器，臺灣：2000附錄1 英文文獻(xiàn)Five Trends in the future development of DSP In the 4G wireless munications, data throughput has reached 100 to 1,000 times of that in 3G era。[3] 劉永智 楊開愚. 液晶顯示技術(shù)，電子科技大學(xué)出版社，2000年12月，第一版。參考文獻(xiàn)[1] 李哲英 駱麗 劉元盛. DSP基本理論與應(yīng)用技術(shù)，北京航空航天大學(xué)出版社，2002年6月，第一版。由于個人能力有限和時間比較倉促，對有些問題未能進(jìn)行更加深入的研究，還有一些問題有待進(jìn)一步研究：(1) 通過更多的實驗，完善顯示系統(tǒng)，使顯示系統(tǒng)具有更好的性能。（2） 在硬件設(shè)計方面，進(jìn)行了MP3液晶顯示系統(tǒng)電路的分析和設(shè)計，主要包括以DSP為核心的DSP模塊、LCD電路、鍵盤電路。 經(jīng)過測試，本文提出的方案的功能和性能達(dá)到預(yù)期目標(biāo)，實現(xiàn)了歌詞的顯示，具有良好的性能和使用價值。系統(tǒng)開始工作系統(tǒng)初始化消抖、讀取鍵值圖53 總線型鍵盤工作流程圖第六章 結(jié)論本論文詳細(xì)描述了基于DSP的MP3液晶顯示系統(tǒng)的硬件和軟件設(shè)計思想和設(shè)計流程。每條指令的執(zhí)行都是先送入?yún)?shù)，再送入指令代碼，然后送顯示數(shù)據(jù)。給液晶屏發(fā)送接收數(shù)據(jù)指令，即將LCD的RD引腳置為低電平，然后將顯示數(shù)據(jù)送到LCD數(shù)據(jù)總線上，一個周期的數(shù)據(jù)的采集和顯示即完成。然后畫出操作界面背景；DSP控制液晶顯示采用外部中斷方式。系統(tǒng)初始化液晶初始化調(diào)用顯示文本函數(shù)系統(tǒng)延時液晶清屏調(diào)用寫入數(shù)據(jù)函數(shù)開始調(diào)用顯示函數(shù)結(jié)束 開始查找目錄區(qū)的起始位置搜索歌曲名讀取第一個字符的Unicode碼查表找到對應(yīng)的GB2312碼送LCD顯示是否顯示完所有