| 基于DSP串行外设接口的通信 |
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| 引用本文： | 徐朝阳,朱春光,孙海洋.基于DSP串行外设接口的通信[J].兵工自动化,2003,22(5):39-40. |
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| 作者姓名： | 徐朝阳 朱春光 孙海洋 |
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| 作者单位： | 国防科技大学机电工程与自动化学院,湖南,长沙,410073 |
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| 摘 要： | 基于DSP串行外设接口(SPI)的通信，以TMS3201LF2407为主机，DAC7614为从机，主从机数据均在SPICLK的一个边沿移出移位寄存器，在另一个边沿锁存到移位寄存器，由系统软件决定主机对从机的检测，通过I／O口设置控制数据的发送。以一路模拟电压输出设计为例，其DSP采用无延时下降沿时钟方式发送数据以配合DAC7614上升沿接收数据的时序，通过查询方式来控制数据的发送。
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| 关 键 词： | DSP 串行接口 串行通信 TMS3201LF2407 数字信号处理器 SPI DAC7614 |
| 文章编号： | 1006-1576(2003)05-0039-02 |
| 修稿时间： | 2003年4月2日 |
Communication of Serial Peripheral Interface Based on DSP |
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| XU Zhao-yang,ZHU Chun-guang,SUN Hai-yang.Communication of Serial Peripheral Interface Based on DSP[J].Ordnance Industry Automation,2003,22(5):39-40. |
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| Authors: | XU Zhao-yang ZHU Chun-guang SUN Hai-yang |
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| Abstract: | In the communication of serial peripheral interface (SPI) based on DSP, TMS320LF2407 is used as the host controller and DAC7614 used as the obedient controller. The data is sent out from the shift register on one edge of the SPICLK and received on another. How the host controller check up the obedient controller is decided with system software, and TXD controlled by setting I/O. Taking design of simulation voltage output as example, the data is sent out with the timing mode for the descend edge without delay to suit to suit the timing sequence for receiving data on ascend edge of DAC7614, sending and receiving data is controlled with inquiring mode in DSP. |
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| Keywords: | DSP Controller Serial peripheral interface (SPI) Communication |
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