基于FPGA的UltraDMA数据记录系统

Ultra DMA Data Recording System Based on FPGA

根据ATA接口协议,采用Ultra DMA(Ultra direct memory access)模式设计了一种脱机的高速数据记录系统。选择高性能的EP2C8Q208C8芯片,在Quartus开发平台上使用VHDL语言编程。运用Quartus集成的内部逻辑分析软件SignalTap进行实时验证,实验结果显示数据被准确写入硬盘,实现了Ultra DMA数据记录的功能。由于设计不需要主机控制,具有体积小、灵活性高、速度快的优点。

According to ATA interface protocol, the Ultra direct memory access （Ultra DMA） mode is used to design an off-line high-speed data recording system. The design selects high performance EP2C8Q208C8 chip and programs with VHDL on the platform of Quartus Ⅱ . Using SignalTap Ⅱ logic analyzer to carry out actual verification, results indicate that data are accurately written to the hard disk and the function of Ultra DMA data recording is achieved. Because the design works independently, it has advantages of the light weight, the high flexibility and the rapid speed.