慕课嵌入式开发及应用(第四章.MCU的USB底层驱动设计方法2-构件设计)

以你之姓@ 2023-07-18 12:51 5阅读 0赞

### 慕课苏州大学.嵌入式开发及应用.第四章.较复杂通信模块.MCU的USB底层驱动设计方法2-构件设计? ###

*  0 目录
 *  4 较复杂通信模块
 *   *  4.7 MCU的USB底层驱动设计方法2-构件设计
     *   *  4.7.1 课堂重点
         *  4.7.2 测试与作业
 *  5 下一章

# 0 目录 #

# 4 较复杂通信模块 #

## 4.7 MCU的USB底层驱动设计方法2-构件设计 ##

### 4.7.1 课堂重点 ###

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### 4.7.2 测试与作业 ###

> USB主机向USB设备发送数据时， USB设备会产生一个SETUP令牌中断。  
> A.B.  
> 正确答案：错

> 1USB主机程序分为4个层次，不包括以下哪个层次:  
> A.文件系统层。B.USB设备层。C.USB接口层。D.USB驱动构件层。  
> 正确答案：C

> 2BDT页寄存器用来计算当前缓冲区描述符表在系统存储空间的地址。A.B.  
> 正确答案：A

> 3USB主机设备之间通信时基本采用中断方式，具体用到的中断类型有哪些？  
> 正确答案：  
> 复位中断、ERROR中断、SOF中断、令牌完成中断、SLEEP中断、RESUME中断、ATTACH中断、STALL中断。

# 5 下一章 #

**博客地址:**

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