高性能DSP中断处理技术  

Interrupt Processing Technique of High Performance DSP

作　　者：许新任[1] 陈进[1] 

机构地区：[1]上海交通大学芯片与系统研究中心,上海200030

出　　处：《计算机工程》2004年第19期176-177,191,共3页Computer Engineering

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。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.

关 键 词：中断控制 中断请求 快速中断 中断延迟 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]