CAJ | 학술논문

PCI总线是目前应用最广泛的并行总线之一,DSP芯片在数字信号处理领域也有着广泛的应用,但目前大部分DSP芯片不支持PCI总线接口,无法与其他PCI总线设备通信。因此文中以DSP芯片外部存储器总线为接口设计实现了一种基于FPGA的PCI总线接口控制逻辑,通过在FPGA内集成EMIF总线接口、PCI总线接口、控制转换逻辑和一块用于数据管理的DPRAM,使DSP芯片可直接通过PCI总线访问外部设备并响应其他PCI设备发来的操作,实现通过PCI总线进行数据交互,扩展了DSP芯片的应用范围。
PCI총선시목전응용최엄범적병행총선지일,DSP심편재수자신호처리영역야유착엄범적응용,단목전대부분DSP심편불지지PCI총선접구,무법여기타PCI총선설비통신。인차문중이DSP심편외부존저기총선위접구설계실현료일충기우FPGA적PCI총선접구공제라집,통과재FPGA내집성EMIF총선접구、PCI총선접구、공제전환라집화일괴용우수거관리적DPRAM,사DSP심편가직접통과PCI총선방문외부설비병향응기타PCI설비발래적조작,실현통과PCI총선진행수거교호,확전료DSP심편적응용범위。
PCI had been considered as one of the most widely used parallel buses. DSP chips also had extensive application in digital sig-nal processing field. However,presently most DSP chips didn't support the PCI interface not to communicate with other PCI. introduced the implementation of PCI interface control logics via the external memories bus of the DSP chip. The design integrated EMIF interface, PCI interface,control translated logic and a block of DPRAM for data management into a single FPGA chip,which enabled the DSP chip directly access the external devices through the PCI interface,responsed the operation from other PCI devices and implemented the data exchange through PCI interface,so it expanded the application area of the DSP chips.