摘要： 分析了DSP中断控制和中断服务机制,设计了4级中断优先级系统,提供了硬件、软件异常,硬件、软件中断,DMA中断,片上、片外中断等多种中断类型;提供电平、边沿触发的选择。实现了快速中断A、快速中断B和普通中断3种服务类型。整个中断系统较好地满足了DSP用作数字信号处理时快速高效的特点。

关键词: 中断控制, 中断请求, 快速中断, 中断延迟

Abstract: This paper discusses the interrupt control and interrupt service of DSP, designs 4 stage interrupt priorities, provides several kinds of interrupt, such as hardware/software exception, hardware/software interrupt, DMA interrupt, on chip/peripheral interrupt, provides level/edge triggered interrupt. And implements three kinds of interrupt services as fast interrupt A, fast interrupt B and normal interrupt. The whole interrupt system fulfills DSPs fast digital signal processing quite well.

中图分类号: 

• TP332