摘要
介绍了一种通过 PCI总线控制器 PCI90 54对异步器件进行访问控制的方法。首先分析了 PCI90 54的目标传输时序以及 DDS芯片 AD9854的主要特性 ,然后采用 FPGA器件 ,进行时序转换 ,完成了 PCI90 54对 DDS器件 I/ O口的异步读写操作。
In this paper, a method of how to access an asynchronous chip DDS AD9854 by a PCI bus controller PCI 9054 is presented. First, the features of PCI 9054 and AD9854 are introduced. In designing the PCI card, glue logic is added between PCI9054 and AD9854 to adjust timing and to implement the DDS's asynchronous I/O write/read operations.
出处
《电子工程师》
2002年第10期51-54,共4页
Electronic Engineer
