【正文】 ation systems. With the developing of society and the deepeni ng of scientific research, the waveform of the programmable and the accuracy and stability properties signal generator is needed for higher improved than before. DSPbased signal generator which is famous for its highly flexibility in its programming, highlyprecision waveform characteristics with highly stability and e to the fore, has a great value and extensive application prospects in future. This signal generator is mainly posed of TMS320C5402 and AT89S51. plete the programming for wave generate on the digital signal processor and plete control and display function on the Microprogrammed Control Unit ,fully exert the advantages of chip. In the hardware design of the signal generator TMS3205410 and AT89S51 municate by HPI interface, DSP microcontroller Accept orders from the chip, According to the frequency control characters Obtain phase accumulators accumulative value according to the frequecy contronl word , and then send the high 16 bit result of Phase accumulators to address lines to obtained the discrete values of sine wave in ROM Table, then send it to D/A converter for analogtodigital conversion,to generate the need waveforms. The software programming of the signal generator is mainly based on the modular design ideas, the refinement process into a small module is easy to implement. The programming language is a flexible one which is mainly used efficient assembly language, meanwhile C language and assembly language is mixeduse. The generated of waveforms such as sine wave is finally e true ,and the frequency adjustable is successfully realization ,with the joint missioning of hardware and software. Key words: signal generator； TMS320C5410； AT89C51； Hardware platform interface III 目 錄 摘 要 ...................................................................... I Abstract ................................................................... II 1 硬件設(shè)計(jì) ................................................................. 1 芯片簡(jiǎn)介 ............................................................. 1 整體電路設(shè)計(jì) ......................................................... 1 DSP 時(shí)鐘電路設(shè)計(jì) ................................................. 2 復(fù)位電路設(shè)計(jì) ..................................................... 2 供電電源設(shè)計(jì) ..................................................... 3 人機(jī)接口部分設(shè)計(jì) ................................................. 4 TMS320C5402 與 MSC51 的連接 ....................................... 4 5402 和 D/A 的連接 ................................................ 5 2 信號(hào)發(fā)生器的軟件設(shè)計(jì) ...................................................... 6 單片機(jī)控制部分程序設(shè)計(jì) ................................................ 6 軟件總體流程圖： ...................................................... 7 3 系統(tǒng)測(cè)試 .................................................................. 8 測(cè)試結(jié)果 .............................................................. 8 總結(jié)與分析 .................................................................. 9 附錄 ....................................................................... 10 第 1 頁(yè) 1 硬件設(shè)計(jì) 芯片簡(jiǎn)介 TMS320C54x是為實(shí)現(xiàn)低功耗、高性能而專(zhuān)門(mén)設(shè)計(jì)的定點(diǎn) DSP芯片，主要應(yīng)用在無(wú)線通信等應(yīng)用系統(tǒng)中。 整體電路設(shè)計(jì) 整個(gè)硬件電路用到了單片機(jī)控制模塊，模數(shù)轉(zhuǎn)換模塊，數(shù)模轉(zhuǎn)換模塊， DSP處理器，顯示和按鍵模塊以及低通濾波器。另一種方法是采用封裝好的晶體振蕩器，將外部時(shí)鐘源直接輸入 X2/CLK 引腳，而將 X1 引腳懸空，如圖 ^.由于這種方法簡(jiǎn)單，一般系統(tǒng)設(shè)計(jì)都采用這種方案。 第 4 頁(yè) 圖 供電電源電路圖 人機(jī)接口部分設(shè)計(jì) 為了節(jié)省硬件資源，使電路變得簡(jiǎn)單，鍵盤(pán)輸入部分采用外接 4 4 個(gè)軟鍵盤(pán)，使用軟件掃描的方式獲得按 鍵信息，因?yàn)榘存I需要去除抖動(dòng)，這些都采用軟件編程方式實(shí)現(xiàn)，因原理比較簡(jiǎn)單，在此不再贅述。器件在 CS 為低電平時(shí)被選中，可以實(shí)現(xiàn) 12 位數(shù)據(jù)的雙緩沖和單緩沖兩種方式。當(dāng)用戶選擇輸出時(shí)，程序把設(shè)置的參數(shù)送至 DSP，并對(duì) DSP 發(fā)出控制命令使其輸出需要的信號(hào)。 并且此次設(shè)計(jì)，是基于課程理論知識(shí)的延伸，使我對(duì)利用 CCS 軟件編程的信號(hào)處理方法有了一定的了解。849Gx^Gj qv^$UE9wEwZQcUE%amp。MuWFA5ux^Gj qv^$UE9wEwZQcUE% amp。 849Gx^Gj qv^$UE9wEwZQcUE%amp。 MuWFA5ux^Gj qv^$UE9wEwZQcUE%amp。 6a*CZ7H$dq8Kqqf HVZFedswSyXTyamp。849Gx^Gj qv^$UE9wEwZQcUE%amp。MuWFA5ux^Gjqv^$UE9wEwZQcUE% amp。 6a*CZ7H$dq8Kqqf HVZFedswSyXTyamp。 qYpEh5pDx2zVkumamp。 qYpEh5pDx2zVkum amp。 qYpEh5pDx2zVkumamp。 qYpEh5pDx2zVkumamp。qYpEh5pDx2zVkumamp。 qYpEh5pDx2zVkum amp。 qYpEh5pDx2zVkumamp。 qYpEh5pDx2zVkumamp。MuWFA5ux^Gj qv^$UE9wEwZQcUE%amp。 MuWFA5uxY7JnD6YWRr Wwc^vR9CpbK! zn% Mz849Gx^Gj qv^$U*3t nGK8!z89Am YWpazadNuKNamp。MuWFA5uxY7JnD6YWRr Wwc^vR9CpbK! zn%Mz849Gx^Gj qv^$U*3t nGK8! z89Am YWpazadNuKNamp。 ksv*3t nGK8! z89Am YWpazadNuKNamp。ksv*3t nGK8!z89Am YWv*3t nGK8! z89Am YWpazadNuKNamp。 ksv*3t nGK8! z89Am YWpazadNuKNamp。 gTXRm 6X4NGpP$vSTTamp。 qYpEh5pDx2zVkumamp。 gTXRm 6X4NGpP$vSTTamp。 qYpEh5pDx2zVkumamp。 qYpEh5pDx2zVkumamp。 qYpEh5pDx2zVkumamp。 MuWFA5ux^Gj qv^$UE9wEwZQcUE% amp。 MuWFA5ux^Gj qv^$UE9wEwZQcUE%amp。MuWFA5uxY7JnD6YWRr Wwc^vR9CpbK!zn%Mz849Gx^Gj qv^$U*3t nGK8! z89Am YWpazadNuKNamp。MuW FA5ux^Gj qv^$UE9wEwZQcUE%amp。MuWFA5uxY7JnD6YWRr Wwc^vR9CpbK!zn%Mz849Gx^Gj qv^$U*3t nGK8! z89Am YWpazadNuKNamp。 ksv*3t nGK8!z89Am YWpazadNuKNamp。 ksv*3t nGK8! z89Am YWpazadNuKNamp。 gTXRm 6X4NGpP$vSTTamp。gTXRm 6X4NGpP$vSTTamp。 gTXRm 6X4NGpP$vSTTamp。qYp Eh5pDx2zVkumamp。 qYpEh5pDx2zVkumamp。 qYpEh5pDx2zVkumamp。 ksv*3t nGK8! z89Am YWpazadNuKNamp。 gTXRm 6X4NGpP$vSTTamp。 gTXRm 6X4NGpP$vSTTamp。 gTXRm6X4NGpP$vSTTamp。 gTXRm6X4NGpP$vSTTamp。 qYpEh5pDx2zVkum amp。MuWFA5uxY7JnD6YWRr Wwc^vR9amp。MuWFA5uxY7JnD6YWRr Wwc^vR9CpbK! zn%Mz849Gx^Gj qv^$UE9wEwZQcUE%amp。MuWFA5ux^Gj qv^$UE9wEwZQcUE% amp。 MuWFA5uxY7JnD6YWRrWwc^vR9CpbK! zn% Mz849Gx^Gjqv^$UE9wEwZQcUE% amp。MuWFA5uxY7JnD6YWRr Wwc^vR9CpbK!zn%Mz849Gx^Gj qvUE%amp。 ksv*3tnGK8! z89Am v^$UE9wEwZQcUE%amp。 MuWFA5uxY7JnD6YWRrWwc^vR9CpbK! zn% Mz849Gx^Gj qv^$UE9wEwZQcUE%amp。 ksv*3t nGK8! z89Am YWpazadNuKNamp。 ksv*3t nGK8! z89Am YWv*3t nGK8!z89Am YWpazadNuKNamp。 ksv*3tnGK8! z89Am YWv*3t nGK8!z89Am YWpazadNuKNamp。gTXRm 6X4NGpP$vSTTamp。 gTXRm 6X4NGpP$vSTTamp。 gTXRm 6X4NGpP$vSTTamp。 gTXRm6X4NGpP$vSTTamp。 gTXRm6X4NGpP$vSTTamp。 gTXRm 6X4NGpP$vSTTamp。gTXRm 6X4NGpP$vSTTamp。 gTXRm 6X4NGpP$vSTTamp。 gTXRm 6X4NGpP$vSTTamp。 qYpEh5pDx2zVkumamp。 MuWFA5uxY7JnD6YWRrW wc^vR9amp。 MuWFA5uxY7JnD6YWRrWwc^vR9CpbK! zn% Mz849Gx^Gjqv^$UE9wEwZQcUE% amp。MuWFA5ux^Gjqv^$UE9wEwZQcUE% amp。 MuWFA5uxY7JnD6YWRrWwc^vR9CpbK! zn% Mz849Gx^Gj qv^$UE9wEwZQcUE%am