zoukankan      html  css  js  c++  java
  • DMA-330(一)

    DMA Controller的interface:

    DMA Controller提供这些feature:

    1)instruction set,对DMA transfer进行program

    2)AXI master interface,进行DMA transfer

    3)两个APB slave interface,设计为secure/non_secure的配置接口。

    4)支持多种transfer类型,Memory-to-memory/Memory-to-peripheral/

                                      Peripheral-to-memory/Scatter-gather

    5)program security state for each DMA channel

    6)Event/interrupt signal

    一个带有DMA Controller的system:

    Configuration options:

    1)Number of active AXI read/write transaction

    2)Number of DMA channel

    3)Depth of internal data buffer

    4)Depth of read/write instruction queue

    5)Request acceptance capability of a peripheral request interface

    Design Flow:

    1)Implementation, synthesizes the RTL to produce a hard a macrocell

    Build configuration,include and exclude logic that can affect the area or maximum frequency

    2)Integration, Connecting it to a memory system and peripheral 

    Configuration inputs, tying inputs to specific values to configures some feature of DMA Controller.

    3)Programming, develops the software required to control the DMA Controller

    programming particular values into software-visible register.

    Terminology

    Initialization, A feature of the DMAC that is initialized when it exits from reset.

    DMA transfer, the action of transferring a single byte,halfword,word

    DMA manager, manages the operation of the DMAC by executing its own program thread.

    DMA channel, control a DMA cycle by executing its own program thread.

  • 相关阅读:
    ASP.NET 构建高性能网站 架构设计
    ASP.NET 构建高性能网站 架构设计
    Vim和Vi的常用命令
    Vim和Vi的常用命令
    Vim和Vi的常用命令
    【收藏】前端知识体系完整版本
    【收藏】前端知识体系完整版本
    Ubuntu-升级linux软件源,安装vim/五笔
    高阶函数---swift中的泛型介绍(一步步实现Map函数)
    Go基础学习(二)
  • 原文地址:https://www.cnblogs.com/-9-8/p/5804317.html
Copyright © 2011-2022 走看看