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为了使不同型号的NOR FLASH都可以高效率地与PLB总线交互,提出了一种软硬件相结合的方法实现接口控制器.仿真结果表明,该控制器可以正确高效地实现NOR FLASH的各种功能.整个控制器最后在Xilinx ml507评估平台上通过了验证,实现了对NOR FLASH的正确操作. 相似文献
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本文提出了一种新型高速均衡电路.在传统源极负反馈均衡滤波结构的基础上改进电路结构,使用有源电感及对称负载结构改善了电路性能,避免了使用片上电感,优化了电路结构,节省了芯片面积,同时缓解了传统均衡电路的速度瓶颈.经仿真验证,该均衡器电路高频补偿增益达到17.2dB ,高低频增益比达到5.24,信号速率达到5Gb/s 时能完整接收信号,实现均衡效果.该电路结构简单,适用于各种高速信号接口电路.该电路采用0.13μm CMOS 工艺实现. 相似文献
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A semi-digital clock and data recovery (CDR) is presented. In order to lower CDR trace jitter and decrease loop latency, an average-based phase detection algorithm is adopted and realized with a novel circuit. Implemented in a 0.13 μm standard 1P8M CMOS process, our CDR is integrated into a high speed serial and de-serial (SERDES) chip. Measurement results of the chip show that the CDR can trace the phase of the input data well and the RMS jitter of the recovery clock in the observation pin is 122 ps at 75 MHz clock frequency, while the bit error rate of the recovery data is less than 10 × 10-12. 相似文献
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激光式扫描枪是一种常见的一维条码识读设备,条码信号的峰值检测是影响该设备性能的关键环节.本文针对该环节改进了一种适用于软件实现的动态双阈值算法,并用MATLAB进行算法仿真,最后在自主研发的激光式扫描枪上对改进的算法进行实验验证.结果表明,改进后的算法能以更少的运算量得到更准确的阈值,提高了峰值检测的准确性,从而有效地改善了激光式扫描枪的识读能力. 相似文献
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针对可编程片上系统(SOPC)的光纤通道适配器设计,分析了XPS Central DMA和Scatter-Gather DMA两种DMA的特点.并在开发板上做了硬件实现,实验结果表明Scatter-Gather DMA传输速率可以达到225MB/s,满足光纤通道传输速率要求(200MB/s). 相似文献
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A semi-digital clock and data recovery(CDR) is presented.In order to lower CDR trace jitter and decrease loop latency,an average-based phase detection algorithm is adopted and realized with a novel circuit. Implemented in a 0.13μm standard 1P8M CMOS process,our CDR is integrated into a high speed serial and de-serial(SERDES) chip.Measurement results of the chip show that the CDR can trace the phase of the input data well and the RMS jitter of the recovery clock in the observation pin is 122 ps at 75 MHz clock frequency,while the bit error rate of the recovery data is less than 10×10-12. 相似文献
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基于CSMC (Central Semiconductor Manufacturing Corporation)0.5μm CMOS工艺设计一种应用于LIN收发器的过温保护电路.该电路包含比较器,并利用两种不同温度特性的电压作为比较器的输入电压.比较器的输出电压作为过温保护电路的输出信号.使用Cadence Spectre工具进行仿真,仿真结果表明,该电路热关断温度为160℃,热开启温度为120℃,具有40℃的热滞回区间. 相似文献