| 双口RAM在低频时码信号采集系统中的应用 |
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| 引用本文： | 冯平,许林生,白燕,吴贵臣.双口RAM在低频时码信号采集系统中的应用[J].时间频率学报,2003,26(2):119-125. |
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| 作者姓名： | 冯平 许林生 白燕 吴贵臣 |
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| 作者单位： | 1. 中国科学院国家授时中心,陕西,临潼,710600;中国科学院研究生院，北京100039
2. 中国科学院国家授时中心,陕西,临潼,710600 |
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| 摘 要： | 介绍了一种快速双口RAM芯片 IDT7026的结构特点和功能，并将其应用于低频时码信号采集系统中，从而实现了DSP(数字信号处理器)和单片机进行快速数据传输和数据共享的任务。给出了通过该芯片进行DSP和单片机通信的具体接口电路，并针对低频时码信号采集系统中交换数据的仲裁方式，提出了令牌传递和软件判优两种实现方法。
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| 关 键 词： | 双口RAM芯片 低频时码信号采集系统 结构特点 功能 DSP 数字信号处理器 数据传输 令牌传递 软件判优 |
| 文章编号： | 1001-1544(2003)02-0119-07 |
| 修稿时间： | 2003年11月11 |
Application of Dual Port RAM to Low-Frequency Time-Code Signal Acquisition System |
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| FENG Ping , XU Lin-Sheng BAI Yan WU Gui-Chen.Application of Dual Port RAM to Low-Frequency Time-Code Signal Acquisition System[J].Journal of Time and Frequency,2003,26(2):119-125. |
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| Authors: | FENG Ping XU Lin-Sheng BAI Yan WU Gui-Chen |
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| Institution: | FENG Ping 1,2 XU Lin-Sheng 1 BAI Yan 1 WU Gui-Chen 1 |
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| Abstract: | The structure characteristics and function of IDT7026,a dual port RAM chip,are introduced,which has been applied to the low-frequency time-code signal acquisition system so as to realize the data transfer and sharing between DSP(Digital Signal Processor)and single chip.A practical interface circuit used for communication between DSP and single chip via IDT7026 is presented.Two ways,i.e.token transfer and software arbitration are brought forward to realize the arbitration mode for data exchange in low-frequeney time-code signal acquisition system. |
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| Keywords: | dual port RAM low-frequency time-code DSP single chip |
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